Instruction Manual for HARMAN models including: DCi Series Analog Input Models, DCi Series Analog Input, Analog Input Models, Analog, DCi 8600, DCi 8300, DCi 41250, DCi 4600, DCi 4300, DCi 21250, DCi 2600, DCi 2300
2022-03-09 — Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your local Crown Distributor.
DCi Series Analog Input Models Operation Manual
DCi 8|600 DCi 8|300 DCi 4|1250 DCi 4|600 DCi 4|300 DCi 2|1250 DCi 2|600 DCi 2|300
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your local Crown Distributor. If you need assistance locating your local distributor, please visit www.crownaudio.com.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Com-Tech, BCA, Crown, Crown Audio, Amcron and Multi-Mode are registered trademarks of Crown International. DriveCore, DriveCore Install, IQwic, PIP and PIP2 are trademarks of Crown International. Other trademarks are the property of their respective owners.
Some models may be exported under the name Amcron®
5040449-B - 05/22
DCi Series Power Amplifiers
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
9. Do not defeat the safety purpose of the Grounding-type plug. A polarized plug has two blades with one wider than the other and should not be used with this product. A grounding-type plug has two blades and a third grounding prong and is the proper plug for this product. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. Use the mains plug to disconnect the apparatus from the mains.
16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE EQUIPMENT.
18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.
WATCH FOR THESE SYMBOLS: The lightning bolt triangle is used to alert the user to the risk of electric shock. The exclamation point triangle is used to alert the user to important operating or maintenance instructions.
IMPORTANT DriveCore Install Series amplifiers require Class 2 output wiring.
MAGNETIC FIELD CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks directly above or below the unit. Because this amplifier has a high power density, it has a strong magnetic field which can induce hum into unshielded devices that are located nearby. The field is strongest just above and below the unit. If an equipment rack is used, we recommend locating the amplifier(s) in the bottom of the rack and the preamplifier or other sensitive equipment at the top.
FCC COMPLIANCE NOTICE
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help.
page 2
Operation Manual
DCi Series Power Amplifiers
Table of Contents
Important Safety Instructions ...............................................................................................................................2 Table of Contents....................................................................................................................................................3 Welcome .................................................................................................................................................................4 Installation ..............................................................................................................................................................5 Set-up and System Configuration ........................................................................................................................6 Front & Back Panel Features.................................................................................................................................12 Global & Per Channel Settings..............................................................................................................................13 Protection System..................................................................................................................................................14 Troubleshooting.....................................................................................................................................................15 DCi Specifications..................................................................................................................................................18 AC Power Draw and Thermal Dissipation.............................................................................................................20 Warranty & Service.................................................................................................................................................28
Operation Manual
page 3
Welcome
DCi Series Power Amplifiers
Thank you for purchasing a Crown DriveCore Install Series installation amplifier, one in a complete line of high-performance amplifiers based on exclusive DriveCore technology. DCi Series amplifiers are designed, engineered and manufactured to the industry's highest quality standards, and provide system integrators with the advanced features and flexibility required for challenging 21st century installed sound applications. Versatile, compact and highly energy-efficient, DCi Series amplifiers continue the unbroken Crown tradition of leadership in professional and commercial power amplifier technology.
Features · Exclusive DriveCore Technology The patented DriveCore integrated circuit combines hundreds of discrete circuits
into one chip for better performance, lower power consumption and improved reliability. · Power Saving Modes Power consumption in sleep mode is less than 1W. · Auto Standby Amplifier goes into Sleep mode after 30 minutes of no input signal. · Remote Power Off Sleep mode activated via AUX port. · 70 V / 100 V Direct Drive Each channel individually selectable for low-Z or high-Z operation. · 100 V Direct Drive Capability Higher voltage allows more speakers per output and reduced wiring costs. · TLC Protection Protects amplifier from excessive heat and maintains operation by intelligently applying gain reduction when necessary. · Advanced Protection Circuits Amplifier and loads are protected against shorted outputs, DC, mismatched
loads, overheating, over- or under-voltage, and high frequency overload. · Complies with Green Edge by Harman Environmentally friendly practices in design, manufacturing, and packaging complement energy-efficient operation. · PFC Power Supply the next generation power supply design guarantees minimum rated power delivered for drastically lower current draw.
How to Use This Manual This manual provides the necessary information to safely and correctly setup and operate your Crown product. It does not cover every aspect of installation, setup, or operation that might occur under every condition. For additional information, please contact technical support, your system installer, or retailer. We strongly recommend you read all instructions, warnings, and cautions contained in this manual.
page 4
Operation Manual
DCi Series Power Amplifiers
Installation
Unpacking Unpack your amplifier and inspect for any damage that may have occurred during transit. If damage is found, notify the shipping company immediately. Only you can initiate a claim for shipping damage, though Crown will be happy to help as needed. If the product arrived showing signs of damage, save the shipping carton for the shipper's inspection.
We also recommend that you save all packing materials for use if you ever need to transport the unit. Never ship the unit without the factory carton and packing materials. Additional Materials FOR INSTALLATION, YOU WILL NEED (not supplied): · Input wiring cables · Output wiring cables · Flathead screwdriver · Phillips screwdriver · Rack for mounting amplifier (or a stable surface for stacking)
WARNING: Before you start to set up your amplifier, read and observe the Important Safety Instructions found at the beginning of this manual.
Install the Amplifier
CAUTION: Before you begin, make sure your amplifier is disconnected from the power source and that all level controls (see Page 13) are set to INF.
All DCi Series amplifiers are 3.5 in. (8.9 cm).high and 19 in. (48.3 cm) wide. All are 14.25 in. (36.2 cm) deep except the DCi8|600 and 4|1250 which is 17 in. (43.2 cm) deep. (See Figure 1) Mount the unit in a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B). You can also place a single amp on a solid, stable surface or stack multiple amps. NOTE: Amplifiers should be supported at both the front and rear of the rack.
19 In. 48.3 cm
14.25 In. 36.2 cm
3.5 In. 8.9 cm
8|600 and 4|1250
17 In. 43.2 cm
Ensure Correct Cooling When using an equipment rack, mount units directly on top of each other. Close any open spaces in the rack with blank panels. (Open spaces will reduce cooling efficiency.) DO NOT block front or rear air vents. The rack should be a minimum of two inches (5.1 cm) away from the amplifier, and the back of the rack should be a minimum of four inches (10.2 cm) from the amplifier back panel.
Air flow is front to back as illustrated in Figure 2.
Operation Manual
page 5
Set-up and System Configuration
Wire Input Connectors
Crown recommends using pre-built or professionally wired balanced line (two-conductor plus shield). Balanced wiring provides better rejection of unwanted noise and hum; however, unbalanced line may also be used.
Use 6-pin plug-in cable ends at the amp input connectors. A male connector is supplied for each input of your model of amplifier.
Figure 3 shows connector pin assignments for balanced wiring and Figure 4 shows connector pin assignments for unbalanced wiring. Note that for bridged operation, only the connectors for oddnumbered channels (1,3,5,7) for each bridged pair need be wired. See Page 8 and 10.
DCi Series Power Amplifiers
Wire Output Connectors
Crown has designed an output cover that does not need to be removed to connect the output wiring.
Crown recommends using the included spade connectors and twoor four-conductor, heavy gauge speaker wire. You may use terminal forks up to 6mm² (10 AWG) or bare wire for your output connectors (see Figure 5). For best results, Crown recommends the use of terminal forks. For bare wire, it is highly recommended that output wiring is tinned. To reduce strain on input and output wiring, Crown recommends the use of horizontal lacer bars. To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable connectors.
For low-impedance loads, select the appropriate size of wire based on the distance from amplifier to speaker.
Distance Up to 7.6m (25 ft) 7.912.2m (2640 ft) 12.518.3m (4160 ft) > 18.3m (60 ft)
Wire Size 1.5mm² (16 AWG) 2.5mm² (14 AWG) 4mm² (12 AWG) 6mm² (10 AWG)
CAUTION: Never use shielded cable for output wiring. CAUTION: Never connect the speaker return to the chassis of the amplifier, or damage to the amplifier may result. NOTE: Custom wiring should only be performed by qualified personnel. Class 2 output wiring is required.
page 6
Operation Manual
DCi Series Power Amplifiers
Set-up and System Configuration
Connect Loudspeakers and Configure for Loudspeaker Load
Determine load impedances and power requirements Before making any connections, carefully check and review the total impedance for loudspeaker systems to be connected to each amplifier output. If multiple loudspeakers are connected to one output (in series, parallel or series-parallel) for Lo-Z operation, be certain the total system impedance is within allowed specification for the output. When multiple loudspeakers are connected to one output for Hi-Z operation, be certain total tapped power is below the rated power output for the channel.
Note: Illustrations and some text references are for channel pair 1 - 2 only. Connections and settings are identical for channels 3 4 on four-channel models and for channels 5 6 and 7 8 on eight-channel models. Each channel pair may be configured independently on multichannel models.
Dual Mode Low-Z (8, 4 or 2 Ohm) Typical input and output wiring, along with Attenuator and Mode DIP Switch settings are shown in Figure 6. Make sure DIP Switches are in the default OFF (down) position.
INPUTS: Connect the input with wiring in place for each channel. If the same signal is to drive both outputs of a channel pair ("mono"), the signal must be split externally and applied to both inputs.
OUTPUTS: Maintain proper polarity (+/) on output connectors. Connect the Channel 1 speaker's positive (+) lead to amplifier Channel 1 positive terminal; repeat for negative (). Repeat Channel 2 wiring as for Channel 1, and for any subsequent channel pairs on multichannel models. Refer to Page 6 for output connector terminal assignments.
Figure 6 System Wiring Dual Mode
Always route the input and output wires in separate bundles. Operation Manual
page 7
DCi Series Power Amplifiers
Set-up and System Configuration
Bridge Mode (16, 8, or 4 Ohm) Typical input and output wiring, along with Attenuator and Mode DIP Switch settings are shown in Figure 7. Make sure the "Hi-Z" selector switches are in the OFF (down) position and the Bridge (BRG) switch is in the ON (up) position. NOTE: Only the Hi-Z selector switches assigned to odd-numbered channels (1,3,5,7) are active in Bridge mode; switches assigned to even-numbered channels (2,4,6,8) are disabled.
Figure 7 System Wiring Bridge Mode
Always route the input and output wires in separate bundles. page 8
Operation Manual
DCi Series Power Amplifiers
Set-up and System Configuration
Dual Mode Hi-Z (70V/100V) Typical input and output wiring, along with Attenuator and Mode DIP Switch settings are shown in Figure 8. Make sure the "Hi-Z" selector switches are in the ON (up) position and the Bridge (BRG) switch is in the OFF (down) position. A 35Hz high pass filter is selected automatically when the amplifier channel is in Hi-Z or Bridged Hi-Z mode. The filter can be changed to 70Hz, please contact your local Crown service center for detailed instruction for this modification. Remember, DCi amplifiers allow each channels Hi-Z or Low-Z mode of operation to be selected independently, while 70V/100V selection is global.
NOTE: For 70V systems, be sure that Global DIP Switch A is in the OFF position. For 100V systems, be sure that Global DIP Switch A is in the ON position.
INPUTS: Connect the input with wiring in place for each channel. If the same signal is to drive both outputs of a channel pair ("mono"), the signal must be split externally and applied to both inputs.
OUTPUTS: Connect the outputs as shown to a Hi-Z (70V / 100V) loudspeaker system.
Figure 8 System Wiring for 70V/100V Operation
Always route the input and output wires in separate bundles. Operation Manual
page 9
DCi Series Power Amplifiers
Set-up and System Configuration
Bridge Mode Hi-Z (140V/200V) Typical input and output wiring, along with Attenuator and Mode DIP Switch settings are shown in Figure 9. Make sure the "Hi-Z" selector switch for the connected input channel is in the ON (up) position and the Bridge (BRG) switch for the channel pair also is in the ON (up) position. A 35Hz high pass filter is selected automatically when the amplifier channel is in Hi-Z or Bridged Hi-Z mode. The filter can be changed to 70Hz, please contact your local Crown service center for detailed instruction for this modification. NOTE: Only the Hi-Z selector switches assigned to odd-numbered channels (1,3,5,7) are active in Bridge mode; switches assigned to even-numbered channels (2,4,6,8) are disabled.
INPUTS: Connect the input to the odd-numbered channels (1,3,5,7) only. Even-numbered inputs are disabled when the Bridge DIP Switch is ON.
OUTPUTS: Connect the speaker across the positive terminals of each channel pair. Do not use the negative terminals of the channel pair when the pair is being operated in Bridge-Mono mode.
NOTE: For global selection of 70V (140V bridged) or 100V (200V bridged) operation, refer to Page 13.
Figure 9 System Wiring for 70V/100V Operation
Always route the input and output wires in separate bundles. page 10
Operation Manual
DCi Series Power Amplifiers
Set-up and System Configuration
Connect to AC Mains Connect your amplifier to the AC mains power source (power outlet) using the supplied AC power cord set. First, connect the IEC end of the cord set to the IEC connector on the amplifier; then, plug the other end of the cord set to the AC mains.
WARNING: The third prong of this connector (ground) is an important safety feature. Do not attempt to disable this ground connection by using an adapter or other methods.
Make certain the AC mains voltage and current ratings are sufficient to deliver full power to all amplifiers. If the AC line voltage varies out of an acceptable range, the amplifier's power supply turns off and the blue Power LED flashes. The amplifier will turn back on when the AC line voltage returns to safe operating levels. DriveCore Install Amplifiers utilize a universal power supply. The AC voltage requirements are 100VAC - 240VAC, 50/60Hz (+/-10%). If the voltage exceeds these requirements, then the Power LED will flash and the amplifier will stop passing audio until the voltage is within the requirements.
Startup Procedure When first turning on your amplifier: 1. Turn down the level of your audio source. 2. Turn down the level controls of the amplifier to INF Page 13. 3. Turn on the "Power" switch. The Power indicator should light. 4. Turn up the level of your audio source to an optimum level. Ensure that at no point in the signal chain is the signal being clipped in any way. 5. Turn up the level controls on the amplifier to the desired loudness or power level. IMPORTANT: Before making any wiring or installation changes, turn off the amplifier and disconnect the power cord.
Precautions
Your amplifier is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety: 1. Configure the amplifier for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating difficulties. For information on wiring and configuration, please consult Page 6 of this manual. 2. Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own!
3. Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations. 4. Never connect the output to a power supply, battery or power main. Electrical shock may result. 5. Tampering with the circuitry or making unauthorized circuit changes may be hazardous and invalidate all agency listings. 6. Do not operate the amplifier with the RED Clip LEDs constantly flashing. 7. Do not overdrive the mixer, which will cause clipped signal to be sent to the amplifier. Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result. 8. Do not operate the amplifier with less than the rated load impedance. Due to the amplifier's output protection, such a configuration may result in premature clipping and speaker damage. Remember: Crown is not liable for damage that results from overdriving other system components.
Operation Manual
page 11
Front Panel Features
Indicators:
Fault Indicator (red): Flashes when the amplifier output channel has stopped operating. (See Page 15 Troubleshooting.)
Thermal Indicator (red): Illuminates when the channel reaches 80 degrees Celsius, indicating the onset of protection compression.
Clip Indicator (red): Illuminates when any of the following conditions are present: Onset of audible clipping, clipped signal detected at input, clipped signal detected at output, engagement of TLC protection circuit.
Level and Signal Indicators (green): Three LEDs indicate signal presence and level as follows: -10 = 10 dB below rated output -20 = 20 dB below rated output Signal = -40dBU input level
Ready Indicator (green): When this indicator is activated, the amplifier is ready to pass audio.
DCi Series Power Amplifiers
Power Indicator (blue)
Illuminates when the amplifier is ON and acceptable AC line voltage is present. Blinks when AC line voltage is outside ±10% range. Flashes for 4 seconds if Power button pressed when amplifier is in sleep mode. (page 15)
Cooling Vent Grille
Provides cooling air flow.
Do not block or cover
these vents.
Bridge Mode Indicator (yellow)
Illuminates when when Bridge Mode is
activated for the channel pair, only odd
number channel will be active
Data Indicator (yellow)
Illuminates when data present
on the network. (Not used in
analog input versions.)
Note: Eight channel model shown. Indications per channel pair are identical for 2 and 4 channel models.
Power Button
Power Ring Indicator (Green) - Illuminates when the amplifier is plugged into a wall outlet with acceptable power.
Back Panel Features
Power Fuse
F20AH 250V, replace with same type fuse. LittelFuse 314 Series. DCi8|600 & 4|1250 incorporate the use of a resetable breaker instead of fuse.
Global Setting DIP Switches
Settings for 70/100 VRMS (Hi-Z operation) operation mode, AMP STATUS and POWER SAVE. These DIP switches affect all output channels. (Refer to Page 13)
Channel Pair DIP Switches
One block of three DIP Switches for each channel pair. Allows selection of Lo-Z or Hi-Z operation per channel and bridging of designated channel pairs. (Refer to Page 13)
Input Attenuators
One 21-position detented porentiometer per channel. Logarithmic audio taper. Attenuation range -95 dB to 0 dB
Input Connectors
One 6-pin plug-in connector per input. High impedance balanced. (Refer to Page 6)
AC Power Inlet:
Standard IEC type 320 inlet for detachable connector 100 - 240 V~. The DCi8|600 and 4|1250 utilize a 20A IEC connector. All other models use a 15A connector.
page 12
Cooling Fan Outlet
Outlets for cooling air flow. Do not block or cover these outlets.
Auxiliary Connector
3-pin plug-in type connector, Enables SLEEP mode and monitoring of AMP STATUS unless the amplifier is in any of these conditions: OFF, SLEEP, or FAULT. (see Page 13)
Output Connectors
One four-pole touch-proof terminal strip per channel pair. Accepts up to 6mm² (10 AWG) wire or terminal forks.
Note: This image reflects the DCi 8|300 back panel
Operation Manual
DCi Series Power Amplifiers
Global Settings
70/100 VRMS (switch A) This switch selects either 70 or 100 VRMS operation for all outputs currently selected for Hi-Z mode. (See the section below, Hi-Z.) Default position is 70 V (OFF). In 70 V and 100 V mode, a voltage limiter circuit is enabled. NOTE: When bridged Hi-Z mode is implemented, selected voltages are doubled to 140V or 200V.
Amplifier Status (switch B) The Amplifier Status works with life safety or supervisory monitoring and control systems where notification of an amplifier fault is necessary. The Amplifier Status produces a signal ("heartbeat") when the amplifier is operating within standard working parameters. If the amplifier enters a fault or thermal condition, the Amplifier Status signal will terminate. This feature is always on and available when the amplifier is ready to deliver audio in selected mode through the AMP STATUS line on the AUX port. The Amplifier Status signal is selectable: · ON the microcontroller will send a 2 Hz pulse to the "AMP STATUS" AUX port line. · OFF the microcontroller will send a logic high level to the "AMP STATUS" AUX port line. The voltage output of the Aux Port is 5VDC at 0.9 milliamps. This TTL or similar signal can then be connected to an interface to indicate the amplifier status to a supervisory control system. Amp status can be used in a variety of life safety applications
Power Save (switch C) The Power Save switch enables the Auto-Standby function. In OFF position, the Auto Standby feature is disabled; amplifier power on/off is controlled by the front panel switch or the AUX port ground closure. In the ON position, Auto Standby is enabled. If the amplifier input does not see signal for 30 minutes, the amplifier will power down to consume less than 1W of power. When -40dBu of input signal is applied, then the amplifier will power up for activation. The power up sequence will take approximately 4 - 5 seconds.
Per Channel Settings
Note: The following text and illustrations refer to one channel pair, channels 1 and 2. Settings and functions are identical for other channels pairs (3/4, 5/6, 7/8) in multichannel models.
Hi-Z Each channel of the channel pair is individually selectable for Lo-Z or Hi-Z operation. When Hi-Z operation is selected (ON, up) a 35Hz high pass filter is selected automatically. The filter can be changed to 70Hz. Contact your local Crown service center for detailed instruction for this change. When a channel pair is configured for bridged Hi-Z mode, only switches assigned to the odd-numbered channels (1,3,5,7) are active; switches for the even-numbered channels (2,4,6,8) are disabled.
Channel Attenuators Each channel is supplied with a logrithmic 21-position detented input attenuator. Use a flat-blade screwdriver to set input level. Attenuation is from -95 dB (full counterclockwise) to 0 dB (full clockwise).
Position
0
1
2
3
4
5
6
7
8
9
10
Typical Attenuation
0
0.1
3
6
8
9.5
11
12.5
14
15.5
16.5
Position
11
12
13
14
15
16
17
18
19
20
Typical Attenuation
17.5
19
20.5
22.5
24.5
27.5
32
42
90
95
Operation Manual
page 13
DCi Series Power Amplifiers
Protection System
Thermal Indicator If the amplifier becomes too hot for safe operation, the channel that is generating too much heat will be shut down until the temperature drops below the thermal limit. The front-panel thermal indicator will illuminate at 80 degrees Celsius, indicating the onset of compression affecting the audio signal. The amplifier will continue to run in this state until either the temperature is reduced to a safe operating range, or if the temperature continues to rise, the channel will shut off to protect itself above 98 degrees Celsius.
Fault The amplifier will enter a Fault state if the amplifier senses an unsafe condition. This protection is for both internal and external faults. It is critical to check all wiring to and from the amplifier to ensure the fault is not caused by external conditions. If wiring is verified as correct and the fault condition persists, see Page 28 for servicing information.
Auto Insertion High-Pass Filters A 35 Hz high-pass filter is inserted automatically when a channel is selected for Hi-Z operation. The filter can be changed to a 70Hz high pass filter.
AC Under/Over Voltage Protection If the AC line voltage drops below 10% or rises above 10% of the nominal operating voltage of the amplifier, the amplifier's power supply turns off and the blue Power LED flashes. The amplifier will turn back on when the AC line voltage returns to safe operating levels.
Fuse A fuse (F1) located near the IEC power inlet protects the amplifier from excessive AC current draw. The fuse is field replaceable. Replace with same type fuse; LittelFuse 314 Series F20AH 250V. The 8|600 and 4|1250 utilize a resettable breaker instead of a fuse.
Fan-cooled Chassis DCi Series amplifiers are cooled by quiet, variable speed fans. The fans will pull air from the front of the amplifier to the rear of the amplifier.
Universal Switching Power Supply The DCi Series incorporates a new switching power supply designed for extremely high efficiency and high output power. The supply includes Power Factor Correction (PFC), a Series Resonant Converter (SRC) and accepts AC supply voltages from 100 V~ to 240 V~. Microprocessor controlled diagnostic and control capabilities both optimize performance, and enhance long-term reliability.
page 14
Operation Manual
DCi Series Power Amplifiers
Troubleshooting
CONDITION: Power indicator is off. Mains indicator is on.
POSSIBLE REASON
· The amplifier's Power switch is off.
Operation Manual
CONDITION: Power indicator is off. Mains indicator is off. POSSIBLE REASON · The power supply fuse has tripped.
· The amplifier has lost AC Power.
· The amplifier is not plugged in to the power receptacle.
CONDITION: Power indicator is flashing. POSSIBLE REASON: · The AC line voltage has dropped below
10% or has risen above 10% of the nominal line voltage of the power supply.
· When the Amp is in Sleep Mode as set by the AUX Port, the amplifier will not power up until the ground closure on the AUX Port is released. When the power button is pushed in this condition, the Power Indicator will flash for 2 3 seconds.
CONDITION: Thermal indicator is on. POSSIBLE REASON: · The amplifier is becoming too hot for safe
operation. Allow amplifier to cool. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation and proper mode-switch setting.
CONDITION: Fault indicator is flashing. POSSIBLE REASON: · There are a number of conditions that
result in the Fault indicator flashing: temperature above 98 Degrees Celsius, DC/LF protection is engaged, HF detect, output short circuit detected. These conditions should all be checked and attempted to be resolved before the amp is shipped back for service.
"Off/Flashing/On" above means that the LED can be off, or flashing, or on.
page 15
Troubleshooting
DCi Series Power Amplifiers
CONDITION: Distorted sound.
POSSIBLE REASON:
· Load is wired incorrectly or Stereo/Bridge mode switch is set incorrectly. Check both.
· Input is overloaded by a signal level that is too high. Turn down your amplifier level controls, or turn down the input signal, until the clip light goes out.
Note: If the signal sounds distorted even though the Clip LED is off, the input signal may be distorted before it reaches the amplifier input. Check gain staging and output levels of the mixer or preamp.
"Off/Flashing/On" above means that the LED can be off, or flashing, or on.
CONDITION: No sound, even though the amp has power. Power LED is on without flashing and the amp is receiving an input signal. Signal indicator is flashing. POSSIBLE REASON: · Speakers not connected.
· Open circuit due to speaker failure.
· Based on the front panel LEDs, determine which channel has a short. Remove the associated input connector to ensure that no voltage will be present on the output. Remove the shorted load (and possibly attached cables) and have it checked by a qualified technician. If the shorted condition remains after the load is removed, the unit should be sent into a qualified service center.
· Ready LED is off. Channel has been set to Sleep mode via the Aux port or Power Save mode.
page 16
Operation Manual
DCi Series Power Amplifiers
Troubleshooting
CONDITION: No input signal. Signal indicator is not flashing even though audio is applied, and the channel is ready. POSSIBLE REASON: · Input signal level is very low.
CONDITION: Bridge LED is lit. POSSIBLE REASON: · Amplifier is in bridge-mono mode.
"Off/Flashing/On" above means that the LED can be off, or flashing, or on.
DCi Specifications
Dual-Mode - All Channels Driven
DCi Model
Channels
2|300
2
2|600
2
4|300
4
4|600
4
8|300
8
8|600
8
2|1250
2
4|1250
4
Minimum Guaranteed Power (20 Hz - 20 kHz)
2 Ohms
150W 300W 150W 300W 150W 300W 1250W 1250W
4 Ohms
300W 600W 300W 600W 300W 600W 1250W 1250W
Bridge Mono Mode - All Channels Driven
DCi Model
4 Ohm
2|300 2|600 4|300 4|600 8|300 8|600 2|1250 4|1250
300W 600W 300W 600W 300W 600W 2500W 2500W
Minimum Guaranteed Power (20 Hz - 20 kHz)
8 Ohms
600W 1200W 600W 1200W 600W 1200W 2500W 2500W
Operation Manual
8 Ohms
300W 600W 300W 600W 300W 600W 1250W 1250W
16 Ohms
150W 300W 150W 300W 150W 300W 625W 625W
70Vrms
300W 600W 300W 600W 300W 600W 1250W 1250W
100Vrms
300W 600W 300W 600W 300W 600W 1250W 1250W
16 Ohm
600W 1200W 600W 300W 600W 1200W 2500W 2500W
140Vrms
600W 1200W 600W 1200W 600W 1200W 2500W 2500W
200Vrms 600W 1200W 600W 1200W 600W 1200W 2500W 2500W
page 17
DCi Specifications
Input Sensitivity
DCi Model
2|300 2|600 4|300 4|600 8|300 8|600 2|1250 4|1250
8 Ohm
1.0V 1.4V 1.0V 1.4V 1.0V 1.4V 2.0V 2.0V
Dimensions
DCi Model
2|300 2|600 4|300 4|600 8|300 8|600 2|1250 4|1250
Width
19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm) 19 in. (48.3 cm)
DCi Series Power Amplifiers
70V 1.4V 1.4V 1.4V 1.4V 1.4V 1.4V 1.4V 1.4V
Height 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm) 3.5 in. (8.9 cm)
100V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V
Depth 14.25 in. (36.2 cm) 14.25 in. (36.2 cm) 14.25 in. (36.2 cm) 14.25 in. (36.2 cm) 14.25 in. (36.2 cm)
17 in. (43.2 cm) 14.25 in. (36.2 cm)
17 in. (43.2 cm)
page 18
Operation Manual
DCi Series Power Amplifiers
DCi Specifications
Performance Specifications
Voltage Gain (at maximum level setting) 4/8 Ohm, 70V and 100V
Operation
Frequency Response (8 Ohms, 20 Hz - 20 kHz)
Signal to Noise Ratio (ref. rated power, (8 Ohms, 20
Hz - 20 kHz)
Total Harmonic Distortion (at full rated power, from 20 Hz - 20 kHz)
Intermodulation Distortion (60Hz and 7 kHz at 4:1, from - 30dB to full rated Power)
Damping Factor (20 Hz to 100 Hz)
Crosstalk (below rated power,
20 Hz to 1 kHz)
Common Mode Rejection (20 Hz to 1 kHz, typical)
DC Output Offset (with inputs shorted)
Input Impedance (Nominally balanced, nominally unbalanced)
Maximum Input Level Before Compression
Maximum Input Level Before Clipping
Required AC Mains (±10%)
Cooling
Load Impedance Stereo/Dual Mode
Load Impedance Bridge Mono
Maximum Fan Noise (re dB SPL @ 1M)
2|300 45
Weight
8.53kg (18.8 lbs)
2|600
4|300
4|600
8|300
34dB
8|600
2|1250
±0.25dB >108 dB
0.35%
0.35% >1000
>80 dB
>70 dB ±10mV
10 kOhms, 5 kOhms
+20dBU
+26dBU 100V - 240V~ 50/60Hz Continuously variable speed forced air, front-to-back airflow 2 - 16 Ohms; 70Vrms and 100Vrms
4 - 16 Ohms; 140Vrms and 200Vrms
45
45
45
47
47
47
8.53kg (18.8 lbs)
9.12kg (20.1 lbs)
9.12kg (20.1 lbs)
10.66kg (23.5 lbs)
13.60kg (30 lbs)
9.12kg (20.1 lbs)
IEC Power Connector
15A IEC
15A IEC
15A IEC
15A IEC
15A IEC
20A IEC
15A IEC
4|1250
47 13.60kg (30 lbs) 20A IEC
Operation Manual
page 19
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
2 4 8 70V (16.33) 100V (33.33)
1/3 Power Pink Noise Typical of program material at extreme clip
2 4 8 70V (16.33) 100V (33.33)
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
N/A
4 8 16 140V (32.67) 200V (66.67)
4 8 16 140V (32.67) 200V (66.67)
"Line current (amps)"
0.6
1.0 1.4 1.4 1.3 1.4
1.8 2.9 2.6 2.8 2.6
DCi 2|300 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
238
60
77
262
66
84
287
72
79
271
68
79
268
68
81
275
69
99
338
85
118
403
102
102
347
87
104
356
90
105
358
90
"Line current (amps)"
0.6
DCi 2|300 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
239
60
1.0
80
273
69
1.4
86
294
74
1.4
80
274
69
1.3
78
265
67
1.3
78
267
67
1.8
107
364
92
2.8
126
430
108
2.7
108
367
93
2.6
101
345
87
2.6
99
338
85
"Line current (amps)"
0.4
0.6 0.8 0.8 0.8 0.8
1.0 1.5 1.4 1.3 1.4
"Line current (amps)"
0.4
0.6 0.8 0.8 0.8 0.8
1.0 1.5 1.4 1.4 1.4
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
238
60
79
269
68
84
288
73
81
277
70
80
273
69
81
277
70
96
329
83
111
380
96
96
327
83
93
317
80
98
336
85
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
240
60
83
283
71
88
300
76
84
287
72
80
273
69
80
274
69
102
348
88
117
400
101
101
345
87
95
323
81
94
321
81
page 20
Operation Manual
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
2 4 8 70V (8) 100V (16.67)
1/3 Power Pink Noise Typical of program material at extreme clip
2 4 8 70V (8) 100V (16.67)
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
4 8 16 140V (16) 200V (33.33)
1/3 Power Pink Noise Typical of program material at extreme clip
4 8 16 140V (16) 200V (33.33)
"Line current (amps)"
0.6
1.5 2.2 2.1 2.1 2.1
2.9 4.7 4.5 4.5 4.5
DCi 2|600 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
72
246
62
93
318
80
106
362
91
95
324
82
94
320
81
93
318
80
133
454
114
156
533
134
131
448
113
132
450
113
127
435
110
"Line current (amps)"
0.6
DCi 2|600 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
239
60
1.5
93
318
80
2.2
109
372
94
2.1
101
345
87
2.1
98
334
84
2.1
92
316
80
2.9
143
486
123
4.8
174
592
149
4.5
143
487
123
4.5
143
488
123
4.5
130
442
111
"Line current (amps)"
0.4
0.8 1.2 1.1 1.1 1.1
1.5 2.4 2.4 2.4 2.4
"Line current (amps)"
0.4
0.8 1.2 1.1 1.1 1.1
1.5 2.6 2.4 2.4 2.3
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
70
240
60
91
310
78
99
339
85
90
306
77
89
304
77
87
297
75
126
430
108
147
502
126
125
427
107
123
421
106
121
413
104
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
73
249
63
97
329
83
104
355
89
94
320
81
92
312
79
90
308
78
138
472
119
171
585
147
138
470
118
135
462
116
125
425
107
Operation Manual
page 21
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
Load
N/A
2 4 8 70V (16.33) 100V (33.33)
2 4 8 70V (16.33) 100V (33.33)
"Line current (amps)"
1.0
1.9 2.6 2.6 2.5 2.5
3.4 5.5 5.0 4.9 5.0
DCi 4|300 - Dual
120 VAC / 60 Hz
Power Dissipated as Heat
watts
BTU
kcal/hr
118
401
101
141
480
121
156
532
134
149
509
128
143
489
123
149
507
128
194
661
167
219
749
189
191
653
164
183
624
157
197
673
170
"Line current (amps)"
0.6
1.0 1.4 1.4 1.3 1.3
1.8 2.9 2.6 2.6 2.6
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
119
408
103
136
465
117
149
507
128
142
484
122
139
475
120
142
485
122
184
629
159
211
719
181
181
618
156
177
604
152
191
652
164
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
4 8 16 140V (32.67) 200V (66.67)
1/3 Power Pink Noise Typical of program material at extreme clip
4 8 16 140V (32.67) 200V (66.67)
"Line current (amps)"
1.0
DCi 4|300 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
119
405
102
1.9
145
493
124
2.8
166
566
143
2.7
153
523
132
2.5
142
486
122
2.6
146
500
126
3.5
199
681
172
5.3
225
768
193
5.1
201
685
173
4.9
179
612
154
5.0
185
633
159
"Line current (amps)"
0.6
1.0 1.4 1.4 1.3 1.3
1.8 2.8 2.7 2.5 2.5
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
121
414
104
139
475
120
153
523
132
145
495
125
137
467
118
141
480
121
190
649
164
222
759
191
190
647
163
170
582
147
174
594
150
page 22
Operation Manual
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
2 4 8 70V (8) 100V (16.67)
1/3 Power Pink Noise Typical of program material at extreme clip
2 4 8 70V (8) 100V (16.67)
"Line current (amps)"
1.0
3.0 4.3 4.0 4.0 4.0
5.6 9.4 8.9 8.8 8.8
DCi 4|600 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
118
402
101
182
622
157
200
682
172
174
595
150
175
596
150
169
577
146
264
901
227
316
1079
272
266
907
228
268
915
231
256
872
220
"Line current (amps)"
0.6
1.5 2.2 2.2 2.1 2.1
2.9 4.8 4.6 4.6 4.6
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
120
409
103
168
575
145
191
652
164
168
573
144
168
573
144
162
554
140
249
848
214
287
980
247
240
820
207
240
820
207
231
789
199
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
4 8 16 140V (16) 200V (33.33)
1/3 Power Pink Noise Typical of program material at extreme clip
4 8 16 140V (16) 200V (33.33)
"Line current (amps)"
1.0
DCi 4|600 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
117
400
101
2.9
185
631
159
4.4
207
707
178
4.0
183
625
158
3.9
179
609
154
3.9
167
571
144
5.7
278
948
239
9.6
344
1174
296
9.0
292
995
251
9.0
289
988
249
8.8
260
886
223
"Line current (amps)"
0.6
1.5 2.2 2.1 2.1 2.1
3.0 4.9 4.6 4.6 4.5
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
118
404
102
173
592
149
196
670
169
175
596
150
173
591
149
163
556
140
269
918
231
322
1099
277
235
802
202
259
884
223
231
790
199
Operation Manual
page 23
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
2 4 8 70V (16.33) 100V (33.33)
1/3 Power Pink Noise Typical of program material at extreme clip
2 4 8 70V (16.33) 100V (33.33)
"Line current (amps)"
1.8
3.3 5.0 4.9 4.8 4.8
5.7 10.3 10.0 9.9 10.0
DCi 8|300 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
214
731
184
223
762
192
288
982
247
270
920
232
267
911
230
274
936
236
263
896
226
417
1423
359
372
1269
320
366
1250
315
395
1347
340
"Line current (amps)"
1.0
1.9 2.7 2.5 2.5 2.6
3.4 5.3 5.0 5.0 5.1
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
216
738
186
243
831
209
279
950
240
263
896
226
262
895
225
272
927
234
331
1131
285
392
1336
337
341
1165
294
346
1179
297
361
1233
311
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
N/A
4 8 16 140V (32.67) 200V (66.67)
4 8 16 140V (32.67) 200V (66.67)
"Line current (amps)"
1.9
DCi 8|300 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
221
755
190
3.5
273
932
235
4.9
292
998
251
4.8
267
910
229
4.7
262
892
225
4.6
254
867
218
6.7
381
1300
327
10.4
436
1488
375
9.8
374
1277
322
9.4
335
1142
288
9.6
347
1185
299
"Line current (amps)"
1.0
1.9 2.6 2.6 2.5 2.5
3.4 5.4 5.1 4.9 4.7
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
216
738
186
248
847
213
276
943
238
259
885
223
242
824
208
252
858
216
341
1165
293
401
1369
345
337
1151
290
291
995
251
297
1013
255
page 24
Operation Manual
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
2 4 8 70V (8) 100V (16.67)
1/3 Power Pink Noise Typical of program material at extreme clip
2 4 8 70V (8) 100V (16.67)
"Line current (amps)"
1.9
5.8 8.5 8.2 7.5 7.8
11.0 19.0 17.5 17.1 16.6
DCi 8|600 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
215
733
185
333
1135
286
356
1213
306
311
1061
267
283
964
243
281
959
242
466
1589
400
587
2004
505
448
1529
385
441
1504
379
381
1301
328
"Line current (amps)"
1.0
2.9 4.3 4.2 3.9 4.0
5.7 9.6 8.8 8.6 8.5
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
207
705
178
325
1110
280
336
1147
289
290
990
249
287
979
247
267
912
230
486
1658
418
558
1906
480
388
1324
334
379
1294
326
344
1173
296
Condition
Load
At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
N/A
4 8 16 140V (16.33) 200V (33.33)
1/3 Power Pink Noise Typical of program material at extreme clip
4 8 16 140V (16.33) 200V (33.33)
"Line current (amps)"
1.8
DCi 8|600 - Bridge
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
210
718
181
5.5
328
1118
282
8.2
332
1132
285
8.1
303
1032
260
7.4
279
952
240
7.3
262
895
226
10.5
451
1538
387
17.7
516
1759
443
17.3
425
1448
365
16.9
412
1407
355
16.7
369
1258
317
"Line current (amps)"
1.0
2.8 4.2 3.8 3.8 3.8
5.4 9.0 8.8 8.6 8.5
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
211
721
182
318
1084
273
305
1041
262
266
909
229
270
923
233
253
862
217
437
1492
376
440
1502
379
374
1277
322
368
1255
316
311
1061
267
Operation Manual
page 25
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
Condition At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
Load
N/A 2 4 8 70V (4) 100V (8)
2 4 8 70V (4) 100V (8)
Load
N/A 4 8 16 140V (8) 200V (16)
4 8 16 140V (8) 200V (16)
"Line current (amps)"
0.8
DCi 2|1250 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
97
330
83
6.2
198
675
170
5.1
143
489
123
4.2
106
361
91
4.1
132
450
113
3.8
122
418
105
11.4
275
938
236
10.4
220
750
189
9.4
221
754
190
9.0
260
886
223
8.7
196
669
169
"Line current (amps)"
0.5
3.0 2.5 2.3 2.1 2.1
6.4 5.2 4.6 4.6 4.5
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
91
311
78
182
621
156
138
469
118
154
526
132
126
430
108
143
487
123
314
1071
270
235
802
202
179
611
154
197
671
169
176
602
152
DCi 2|1250 - Bridge
120 VAC / 60 Hz
"Line current
(amps)"
Power Dissipated as Heat
watts
BTU
kcal/hr
0.8
96
329
83
4.1
175
598
151
4.2
142
485
122
4.1
155
529
133
3.9
143
486
123
3.6
111
378
95
9.6
276
943
238
9.8
218
743
187
9.5
204
696
175
9.1
224
763
192
8.7
160
546
138
"Line current
(amps)" 0.5
2.1 2.2 2.0 2.1 2.1
5.0 4.8 4.9 4.6 4.7
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
91
311
78
141
483
122
127
434
109
105
360
91
141
481
121
132
451
114
233
796
201
211
719
181
209
715
180
200
682
172
208
711
179
page 26
Operation Manual
DCi Series Power Amplifiers
AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation: Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Data based on all channels driven.
Condition At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
Condition At Idle Awake
1/8 Power Pink Noise Typical of program material just at clip
1/3 Power Pink Noise Typical of program material at extreme clip
Load
N/A 2 4 8 70V (4) 100V (8)
2 4 8 70V (4) 100V (8)
Load
N/A 4 8 16 140V (8) 200V (16)
4 8 16 140V (8) 200V (16)
"Line current (amps)"
1.5
DCi 4|1250 - Dual
120 VAC / 60 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
178
607
153
10.4
363
1237
312
9.0
253
862
217
8.4
268
913
230
7.2
204
695
175
7.9
216
738
186
20.6
531
1813
457
19.5
497
1696
427
18.0
421
1436
362
16.6
384
1311
330
17.0
377
1285
324
"Line current (amps)"
0.9
4.4 4.4 4.3 4.0 3.8
9.9 9.8 9.1 8.6 8.7
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
180
615
155
259
884
223
257
878
221
244
831
210
238
811
204
216
737
186
458
1563
394
393
1342
338
331
1130
285
337
1150
290
313
1069
269
DCi 4|1250 - Bridge
120 VAC / 60 Hz
"Line current
(amps)"
Power Dissipated as Heat
watts
BTU
kcal/hr
1.5
179
612
154
8.2
287
979
247
7.8
254
866
218
8.0
262
896
226
7.7
266
908
229
7.8
256
873
220
18.0
528
1802
454
17.9
416
1418
357
17.6
401
1367
344
17.1
375
1278
322
17.0
366
1249
315
"Line current
(amps)" 0.9
4.1 4.0 4.1 4.0 3.9
9.4 9.5 8.9 8.7 8.8
230 VAC / 50 Hz Power Dissipated as Heat
watts
BTU
kcal/hr
180
614
155
281
961
242
232
791
199
224
766
193
234
799
201
255
870
219
497
1696
428
362
1237
312
308
1052
265
364
1242
313
313
1067
269
Operation Manual
page 27
DCi Series Power Amplifiers
Warranty and Service
This unit has very sophisticated circuitry which should only be serviced by a fully trained technician. This is one reason why each unit bears the following label: CAUTION: To prevent electric shock, do not remove covers. No user serviceable parts inside. Refer servicing to a qualified technician. For all warranty and service information please see relevant pages found at www.crownaudio.com
page 28
Operation Manual
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