Blastking D20K 20000 Watt 4 Channel Class-D Professional Power Amplifier
Take your performance to the highest levels… Axial Pro Series
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Lightweight Class D Power Amplifier
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2U Rack Space
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Available in 110V or 220V AC Power Input
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Function Indicators and Short Circuit Protection
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Precision Rotary Level Controls and Power Switch
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97% Power Efficiency
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8 Ohm Stereo: 4x2100 Watts
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4 Ohm Stereo: 4x4000 Watts
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8 Ohm Mono: 2x10000 Watts
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Input: XLR
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Output: NL4 Speakon
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Dimension (WxHxD): 19”x3.4”x14.8” (483x88x377 mm)
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Weight: 35 lbs (15.8 Kg)
Control Elements
Front Panel
- The front panel LED area includes the following indicators per channel:
1. VOLUME CONTROL
- Calibrated potentiometers to alter the total gain of the power amplifier. In order to avoid distortions in mixing consoles, these controls should normally be positioned between 0 and 10. The calibrated markings show the additional attenuation directly.
2. MUTE LED
- MUTE protection under mute position.
3. CLIP/LIMIT INDICATOR
- This indicator signals if the amplifier output is clipping or limiting. It has two different indication states:
- If the clip limiter is engaged, it has a short time constant, and it illuminates briefly.
- If the clip limiter is not engaged, it has an increased time constant, and it illuminates for a longer period.
4. LED SIGNAL
- Green SIG Indicates output signal levels in normal operating range.
5. TEMP
- This LED lights up if the limiter has been activated and the power amplifier is being operated at the clip level. If the LED flashes briefly, this is not a cause for concern. If this LED is lit permanently, the volume should be reduced to avoid overload damages to the connected loudspeaker systems.
6. VHF
- VHF-Very High Frequency protection active ( output muted ) ( Yellow Constant )
7. CPL LED
- CPL-( Orange constant with output muted ): Low impedance/Short Circuit Detection Fault.
8. POWER SWITCH
- Turn the unit power on or off.
IMPORTANT NOTE
ATTENTION: This unit must be protected from moisture because of the risk of fire and the
possibility of electric shocks.
voltage marked on the rear panel.
2. Make sure that nothing, especially metal objects are inserted into the device. This could
result in electric shock or malfunction.
3. If the unit is subjected to extreme fluctuations of temperature e.g. On being transported from
outside into a heated room, condensation can form. This unit should not be used until it has
reached room temperature.
4. In the event of water or any other fluid being accidentally spilled on the unit, switch the
unit off immediately and send it to a qualified service center for inspection.
5. Make sure that the unit is always well ventilated and never exposed to direct sunlight.
6. Do not use sprays to clean the unit as they have a detrimental effect on the unit and could
cause it to ignite suddenly.
7. The machine uses a single power switch. Please cut off the power before service.
8. Please do not place anything with liquid above the amp to avoid leakage.
