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 the 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 the 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 the cover of the microphone receiver or power supply. The cover should be removed by 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.
Table of Contents
- Before you start
- Introduction ......................................................................................................................................................4
- Features ................................................................................................................................................................4
- Operation
- Front panel ........................................................................................................................................................5
- Rear panel..........................................................................................................................................................6
- Front panel functions.................................................................................................................................7
- Rear panel functions...................................................................................................................................7
- Specifications
- General specifications................................................................................................................................8
Before You Start
Highly efficient Class D amplifier designed in a slim 1 rack unit gives a choice to drive 8 Ω, 4 Ω, and 2 Ω speakers, also ensures increased power density and better audio performance. Amplifiers are customized to use in live sound systems, great 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 features four rotary volume controls labeled 1, 2, 3, 4, corresponding to the amplifier channels. Below these are LED indicators for PWR (Power), SIG (Signal), and CLIP (Clipping) for each channel. A prominent POWER switch is also located on the front panel.
AMP 500, AMP 1500
The front panel features three rotary volume controls labeled 1, 2, 3. Below these are LED indicators for PWR (Power), SIG (Signal), and CLIP (Clipping) for each channel. A POWER switch is also located on the front panel.
Rear Panel
AMP 4X500
The rear panel includes a mains power connector (Powercon), four output connectors (Speakon type), and four input connectors (Balanced XLR). It also features switches for selecting operation modes (Stereo, Bridge, Parallel).
AMP 1500
The rear panel includes a mains power connector (Powercon), output connectors (Speakon type), link connectors, input connectors (Balanced XLR), and switches for selecting operation modes (Stereo, Bridge, Parallel). The unit is rated for AC 220-240V.
AMP 500
The rear panel includes a mains power connector (Powercon), output connectors (Speakon type), link connectors, input connectors (Balanced XLR), and switches for selecting operation modes (Stereo, Bridge, Parallel). The unit is rated for AC 220-240V.
Front Panel Functions
VOLUME CONTROLS: Rotary knobs 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 is present. The clip LED indicator illuminates when the input signal is greater than +3 dBu is present. Occasional blinking is acceptable, but if the LED lights on more than intermittently, turn down either the power amplifier level or reduce the output level of the preceding component to avoid audible distortion.
POWER SWITCH: Switch amplifier power ON or OFF.
Rear Panel Functions
MAINS POWER CONNECTOR: Power connector for mains power.
AMPLIFIER OUTPUT CONNECTORS: Audio outputs designed to connect speakers by using Speakon type connectors.
AMPLIFIER INPUT CONNECTORS: Input connectors designed to connect external audio signals.
AMPLIFIER LINK CONNECTORS: Connect outgoing audio signal from input connectors to an additional amplifier. Input and link connectors are connected with each other directly.
Operation Modes
There are 3 available modes of operation: stereo, bridge, and parallel. Turn off the amplifier before switching these modes.
Stereo mode: This is a general mode. In this mode, all amplifier channels are separate from each other and can be used individually. All inputs require an audio signal, and all volume controls are active. The minimum loudspeaker impedance is specified in the general specification table on the user manual's last page.
Bridge mode: This mode combines power from two channels to drive a single loudspeaker. If bridge mode is activated, the audio signal to the AMP 500 amplifier should be connected to Input 1. Connect audio to Input 3 to bridge channels 2 and 3 of AMP 4X500 amplifiers' outputs. The minimum loudspeaker impedance should be 4 Ω for the AMP 500 model and 8 Ω for the AMP 4X500 model. Before enabling Bridge mode, pay attention to the wiring diagram on the rear panel of the amplifier. Bridge mode requires specific wiring.
Parallel mode: This mode allows the operation of two amplifier channels in parallel with the same audio signal. Two inputs are internally connected, so only Input 1 and Input 3 require an audio signal for the AMP 4X500 amplifier. Use Input 1 only for two-channel amplifiers AMP 500 and AMP 1500. In parallel mode, all volume controls are active. Do not use parallel mode when feeding the amplifier with separate audio signals. Please note that only amplifier inputs are connected in parallel. Do not connect output connectors in parallel! This is not an output parallel mode.
General Specifications
AMP 500, AMP 1500, AMP 4X500 Power Amplifiers
| Feature | 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 |
| Bridge mode 4Ω | 700 W | N.A. | 2x700W |
| Output connectors | Speakon | Speakon | Speakon |
| Input/Link | Balanced XLR | Balanced XLR | Balanced XLR |
| Input Impedance | 20 kΩ | 20 kΩ | 20 kΩ |
| Input gain | 2dBu | 2dBu | 2dBu |
| Frequency Response | 20 Hz - 20 kHz | 20 Hz - 20 kHz | 20 Hz - 20 kHz |
| THD+N | < 0.1% | < 0.1% | < 0.1% |
| S/N ratio | > 105 dB | > 105 dB | > 105 dB |
| Crosstalk | > 75 dB | > 75 dB | > 75 dB |
| Cooling | Forced air cooling | Forced air cooling | Forced air cooling |
| Dimensions (H x W x D) | 44 x 483 x 375 mm | 44 x 483 x 375 mm | 44 x 483 x 375 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. Rev. 2023-04-20
