CROSSOVER AND CONTROLS
Low Level Output: Use this output connection to feed the audio signal to additional amplifiers.
Gain: The gain control is not a volume control. It adjusts the amount of signal required to drive the amplifier to full output. With the gain at full clockwise rotation, less signal voltage is required. With the gain at full counter-clockwise rotation, more signal voltage is required. For optimal performance, set the gain control to minimum.
High Pass Filter (HPF): The high pass crossover/filter is designed to remove low-frequency information from a speaker, protecting smaller devices from damage. The crossover frequency is adjustable from 120 Hz to 3MHz with a 12 dB per octave slope. To engage the HPF, slide the switch to the HPF position. Frequency selection is made by rotating the dial; clockwise raises the frequency, counter-clockwise lowers it. Most mid-bass or midrange drivers should be set between 80 Hz and 400 Hz. For mid-range drivers 5 inches or smaller, set the HPF to 120Hz. The HPF can be combined with passive crossovers for low-frequency protection or to form a band-pass filter.
Low Pass Filter (LPF): The low-pass crossover/filter is designed to remove high-frequency information from a speaker, preventing mid-bass speakers or subwoofers from reproducing frequencies they are not designed for. The crossover frequency is adjustable from 50Hz to 250Hz with a 12dB per octave slope. To engage the LPF, slide the switch to the LPF position. Frequency selection is made by rotating the dial; clockwise raises the frequency, counter-clockwise lowers it. Most subwoofers should be set between 80Hz and 100Hz.
Full Range: Sliding the selector switch to this position turns off all crossovers, allowing a full-range signal to pass. This position should be selected when using outboard electronic crossovers.
Diagram 1: Shows the front panel of the amplifier with input/output connections and control knobs for gain, HPF, and LPF. It illustrates connections from a head unit to the front and rear RCA inputs.
Diagram 2: Shows the rear panel of the amplifier with power input terminals (GND, REM, +12V), fuses, and speaker output terminals (FL, FR, RL, RR, BRIDGED). It illustrates wiring from the amplifier to a speaker and a subwoofer.
Diagram 3: Shows the front panel of the amplifier with input/output connections and control knobs, similar to Diagram 1, illustrating connections from a head unit to the front and rear RCA inputs.
Diagram 4: Shows the rear panel of the amplifier with power input terminals and speaker output terminals, illustrating wiring from the amplifier to two speakers and a subwoofer.
Diagram 5: Shows the front panel of the amplifier with input/output connections and control knobs, illustrating connections from a head unit to the front and rear RCA inputs.
Diagram 6: Shows the rear panel of the amplifier with power input terminals and speaker output terminals, illustrating wiring from the amplifier to four speakers.
Diagram 7: Shows the front panel of the amplifier with input/output connections and control knobs, illustrating connections from a head unit to the front and rear RCA inputs.
Diagram 8: Shows the rear panel of the amplifier with power input terminals and speaker output terminals, illustrating wiring from the amplifier to four speakers.
Diagram 9: Shows the front panel of the amplifier with input/output connections and control knobs, illustrating connections from a head unit to the front and rear RCA inputs.
Diagram 10: Illustrates series wiring of speakers.
Diagram 11: Illustrates parallel wiring of speakers.
Diagram 12: Illustrates series/parallel wiring of speakers.
Diagram 13: Illustrates power connection leads and battery connection.
FEATURES
- Extruded aluminum heatsink
- Variable crossovers
SPECIFICATIONS
| SPECIFICATION | SE1200.4V2 |
|---|---|
| RMS POWER 4Ω | 60W X 4CH |
| RMS POWER 2Ω | 85W X 4CH |
| RMS POWER BRIDGED 4Ω | 170W X 2CH |
| MAX POWER | 1200W |
| THD | +0.1% |
| Frequency Response ± 1dB | 10Hz - 30KHz |
| SIGNAL TO NOISE RATIO | >90dB |
| SENSITIVITY | 0.15 - 6V |
| RECOMMENDED FUSE | 20A x 2 |
| DIMENSIONS (IN) | 12.6 x 8.07 x 2 |
INSTALLATION INFORMATION
Memphis Audio recommends the installation of its products be performed by an Authorized dealer. Attempting an installation project on your own or through an unauthorized source may result in damage to your products and may potentially void your warranty.
Amplifiers are generally mounted in the hatch/trunk area of your car or SUV or behind the seat of most pickup trucks. Select a location that provides adequate ventilation. Avoid mounting the amplifier with fins facing down. The amplifier should be secured using the screws provided.
TROUBLESHOOTING
When troubleshooting your amp, speakers and speaker wires should be tested first.
DISTORTED OUTPUT
Check the speakers; they may be blown. If the speakers are blown, check the system with a known working pair of speakers and repair or replace as needed.
POOR BASS RESPONSE
- Speakers may be wired incorrectly. The speaker polarity may be causing cancellation at low frequencies. Check the speaker polarity and repair as needed.
- Crossovers may be set incorrectly. Reset the crossovers referring to the multi-cross crossover configuration section of this manual for detailed instructions.
BATTERY FUSE BLOWING
- Impedance load to amplifier may be too low. Check the impedance load; if below 2Ω stereo or 4Ω mono, rewire the speakers to achieve a higher impedance.
- Short in power wire or incorrect power connections. Check the power and ground connections and repair as needed.
- Is your fuse too small compared to the recommended size? Replace with the proper sized fuse.
AMPLIFIER FUSE BLOWING
- Is too much current being drawn? Check speaker impedance load; if below 2Ω stereo or 4Ω mono, rewire speakers to achieve a higher impedance.
- You may be experiencing a short in your power wire. Check your power and ground connections and repair as needed.
- Is your fuse smaller than recommended? Replace with a properly sized fuse.
NO OUTPUT
- Low or no remote turn-on. Check the remote turn-on voltage output at the amplifier and correct as needed.
- Blown fuses can cause no output. Check power wire integrity and reverse polarity. Repair as needed and replace fuses.
- Power wire may not be connected. Check the power and ground wires; repair or replace as needed.
- Audio input not connected or no output from source. Check the input connections and signal integrity. Repair or replace as needed.
- Are the speaker wires loose or not connected? Check the wires and repair or replace as needed.
AUDIO CYCLES ON AND OFF
- Speakers may be blown. Check the system with a working speaker and repair or replace as needed.
- Thermal protection engages when the amplifier heatsink exceeds 90°C (194°F). Ensure proper ventilation for the amplifier. Improve ventilation or change mounting locations as needed.
- Loose or poor audio inputs can cause inconsistent signal. Check the input connections and repair or replace as needed.
DISTORTED OUTPUT (Continued)
- Amplifier level sensitivity may be set too high, exceeding the maximum output capability of the amplifier. Reset your gains referring to the tuning section of this manual.
- Impedance load to amplifier being too low can cause distortion. Check speaker impedance load. If below 2Ω stereo or 4Ω mono, rewire speakers to achieve higher impedance.
- Speaker wires need to be checked and replaced/repaired if shorts are present.
- Speakers not being connected properly to the amplifier will cause distortion. Check the wires and repair and replace as needed. Refer to the installation section of this manual for detailed instructions.
SYSTEM PLANNING
Proper system planning is the best way to maximize your amplifier's performance. By planning your installation carefully, you can avoid situations where the performance and reliability of your system is compromised. Your authorized dealer has been trained to maximize your system's performance and is a valuable resource in helping you with your system's design and installation.
Each channel of your amplifier can easily drive 4Ω speaker loads when used in stereo mode. When a channel pair is bridged, the recommended minimum load impedance is 4Ω. Operation with lower impedances is not likely to cause immediate damage to the internal circuitry, but the unit will most likely overheat, causing the thermal protection circuitry to shut down the amplifier. When the chassis cools down, normal operation will resume. Continued operation of the amplifier under these conditions is not recommended and will reduce the life expectancy of the amplifier.
Most speakers designed for car audio operation are 4Ω impedance. Connecting two 4Ω speakers in parallel will result in a 2Ω impedance load as seen by the amplifier. Some subwoofer models feature a dual 4Ω voice coil design. Connecting these voice coils in parallel will result in a 2Ω nominal impedance, which is not recommended for use with amplifier channels that are bridged.
Diagram 10: Illustrates series wiring of speakers, showing two 4Ω speakers wired in series to present a 8Ω load.
Diagram 11: Illustrates parallel wiring of speakers, showing two 4Ω speakers wired in parallel to present a 2Ω load.
Diagram 12: Illustrates series/parallel wiring of speakers, showing four 4Ω speakers wired in a configuration to present a 4Ω load.
Diagram 13: Illustrates power connection leads, showing the +12V, GND, and REM connections to the amplifier and battery, including fuse placement.
NOTES ON THE POWER SUPPLY
Connect the +12V power input lead only after all other leads have been connected. Be sure to connect the ground wire of the unit securely to a metal part of the car. A loose connection may cause a malfunction of the amplifier.
Remote: The unit is turned on by applying +12V to the terminal. This terminal does not draw heavy current, so a thinner copper wire is acceptable; standard 18 AWG wire is sufficient. If the radio is equipped with a power antenna control wire, it can drive this terminal. If the power antenna wire is already in use, you can splice into it. With this method, the unit will turn on automatically with the radio. Use the power supply lead with a fuse attachment with the same value as the original fuse.
Place the fuse in the power supply lead as close as possible to the car battery. During full power operation, maximum current will run through the system. The wire connecting the +12V and GND terminals of the unit must be 10 AWG or larger.
Service & Returns: Please consult with your local authorized dealer if you experience issues with your unit. You may also contact Memphis Audio customer service at 800-489-2300 or email tech support directly at techsupport@memphiscaraudio.com. Do not attempt to return your amplifier directly to Memphis Audio without first calling for a return authorization number. Units received without an accompanying return authorization number will be processed more slowly. Additionally, you must include a copy of your purchase receipt from an authorized dealer for consideration of in-warranty service; otherwise, repair charges will apply. Units received without a receipt will be held for up to 30 days, allowing time to contact you and obtain a copy of the receipt. After 30 days, all units will be returned to you unrepaired.
Warning: For your safety, always inspect the mounting location carefully to ensure you are not drilling into any electrical, hydraulic, fuel, or fluid lines. Always check your speaker load with a multimeter before connecting the amplifier. Connecting any speaker load lower than the rated impedance of the amplifier will result in damage to the amplifier. Damage of this nature is not covered under warranty. Please pay close attention to what connections are made to the amplifier. If you are uncertain or uncomfortable proceeding with your installation, please contact your local authorized Memphis Audio Dealer.
