AMC Power Amplifiers User Manual
Models: AMP 500, AMP 1500, AMP 4X500
Safety Instructions
When using this electronic device, basic precautions should always be taken, including the following:
- Read all instructions before using the product.
- Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement or near a swimming pool etc).
- Use this device when you are sure that amplifier has a stable base and it is fixed securely.
- This product, in combination with loudspeakers and amplifier may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult with otorhinolaryngologists.
- The product should be located away from heat sources such as radiators, heat vents, or other devices that produce heat.
- The product should be connected to a power supply that is described in the operating instructions or are marked on the product.
- The power supply should be undamaged and never share an outlet or extension cord with other devices. Never leave device plugged into the outlet when it is not being used for a long period of time.
- Care should be taken that objects do not fall into liquids and liquids would not be spilled on the device.
- The product should be serviced by qualified service personnel if: The power supply or the plug has been damaged. Objects have fallen into or liquid has been spilled on the product. The product has been exposed to rain. The product has been dropped or the enclosure damaged.
- There are some areas with high voltage inside, to reduce the risk of electric shock do not remove cover of the microphone receiver or power supply. The cover should be removed by the qualified personnel only.
[CAUTION] RISK OF ELECTRIC SHOCK DO NOT OPEN
To reduce the risk of electric shock, do not remove screws. No user-serviceable parts inside. Refer servicing to qualified service personnel. To reduce the risk of fire, electric shock or product damage, do not expose this apparatus to rain, moisture, dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus.
Before You Start
Introduction
This highly efficient Class D amplifier, designed in a slim 1 rack unit, offers a choice to drive 8 Ω, 4 Ω, and 2 Ω speakers. It also ensures increased power density and better audio performance. These amplifiers are customized for use in live sound systems, making them ideal for night clubs and discos.
Features
- D class power amplifier
- Switching power supply
- Designed to drive 2 Ω speakers
- Soft start
- 1 rack unit size
- Variable speed cooling FAN
- Balanced XLR inputs
- LINK outputs
- Powercon for connecting mains power
- Signal clipping indicator
- Overload protection
Operation
Front Panel
AMP 4X500
The front panel of the AMP 4X500 features four sets of controls. Each set includes a volume control knob, LED indicators (Power, Signal, Clip), and a power switch. The layout is designed for intuitive adjustment of audio levels and monitoring of amplifier status.
AMP 500, AMP 1500
The front panels of the AMP 500 and AMP 1500 models also feature four sets of controls, each comprising volume control knobs, LED indicators (Power, Signal, Clip), and a power switch. These are similarly laid out for ease of use.
Rear Panel
AMP 4X500
The rear panel of the AMP 4X500 provides connectivity for power and audio signals. It includes a mains power connector, multiple amplifier output connectors (Speakon type), and input connectors. Operation mode selection is also available on the rear panel.
AMP 1500
The AMP 1500's rear panel is equipped with a mains power connector, amplifier output connectors (Speakon type), link connectors for signal chaining, input connectors, and operation mode selectors.
AMP 500
Similar to the AMP 1500, the AMP 500's rear panel features a mains power connector, amplifier output connectors (Speakon type), link connectors, input connectors, and operation mode selectors.
Front Panel Functions
Volume Controls
Rotary knobs used for adjusting the volume level of the selected channel.
LED Indicators
The power LED indicator illuminates when the power is turned "ON". The signal LED indicator illuminates when the input signal is greater than -14 dBu. The clip LED indicator illuminates when the input signal is greater than +3 dBu. Occasional blinking is acceptable, but if LED lights on more than intermittently, it is recommended to turn down the power amplifier level or reduce the output level of the preceding component to avoid audible distortion.
Power Switch
Used to switch the amplifier power ON or OFF.
Rear Panel Functions
Mains Power Connector
The connector for the main power supply.
Amplifier Output Connectors
Audio outputs designed to connect speakers, typically using Speakon type connectors.
Amplifier Input Connectors
Input connectors designed to connect external audio signals.
Amplifier Link Connectors
These connectors allow for connecting outgoing audio signals from input connectors to additional amplifiers. Input and link connectors are connected with each other directly.
Operation Modes
There are three available modes of operation: stereo, bridge, and parallel. It is recommended to turn off the amplifier before switching between these modes.
Stereo Mode
This is the general mode. In this mode, all amplifier channels are separate, allowing for four independent outputs. All four inputs require an audio signal, and all volume controls are active. The minimum loudspeaker impedance for this mode should be no less than 2 Ω.
Bridge Mode
This mode combines the power from two channels to drive a single loudspeaker. Only input 1 and input 3 require an audio signal. The minimum loudspeaker impedance should be no less than 4 Ω. Refer to the wiring diagram on the amplifier's rear panel before enabling Bridge mode, as it requires specific wiring.
Parallel Mode
This mode allows operating two channels in parallel with the same audio signal. In this mode, two channel inputs are internally connected, so only input 1 and input 3 require an audio signal, and both corresponding volume controls are active. Do not use parallel mode when feeding the amplifier with four separate audio signals. Note that only amplifier inputs are connected in parallel; output connectors should not be connected in parallel, as this is not an output parallel mode.
General Specifications
AMP 500, AMP 1500, AMP 4X500 Power Amplifiers
| Specification | AMP 500 | AMP 1500 | AMP 4X500 |
|---|---|---|---|
| Power supply | AC 220-240 V, 50/60 Hz | ||
| Channels | 2 | 2 | 4 |
| Output power 8Ω | 2x350 W | 2x800 W | 4x350 W |
| Output power 4Ω | 2x500 W | 2x1500 W | 4x500 W |
| Output power 2Ω | 2x600 W | 2x1800 W | 4x600 W |
| Output connectors | Speakon | ||
| Input/Link | Balanced XLR | ||
| Input Impedance | 20 kΩ | ||
| Input gain | 2dBu | ||
| Frequency Response | 20 Hz - 20 kHz | ||
| THD+N | < 0.1% | ||
| S/N ratio | > 105 dB | > 105 dB | > 105 dB |
| Crosstalk | > 75 dB | > 75 dB | > 75 dB |
| Cooling | Forced air cooling | ||
| Dimensions (HxWxD) | 483 mm x 375 mm x 44 mm | 483 mm x 375 mm x 44 mm | 483 mm x 375 mm x 44 mm |
| Weight | 5,6 kg | 7 kg | 7,2 kg |
The specifications are correct at the time of printing this manual. For improvement purposes, all specifications for this unit, including design and appearance, are subject to change without prior notice.
