CX1500.1 ClassD 1500Wattsx1CH


Main Features:
​Model: CX1500    1500Wx1CH
Output circuitry:Class D
Output power(RMS,≤1% THD + N@0.5 ohms):NA
Output power(RMS,≤1% THD + N@1 ohms) 1500W
Output power(RMS,≤1% THD + N@2 ohms): 1000W
Output power(RMS,≤1% THD + N@4 ohms):600W
Signal-to-noise (@ 1W):)>90dB
Maximum power:1500W
Signal Inputs:RCA
Distortion (SMPTE-IM):NA
Amplifier Protection:YES
Input Sensitivity :0.2V-5V
Dimensions (L x W x H):53x228x436mm



1500W rms Class-D amplifier.
1 ohm load stable.
Double Side PCB and SMD components.
Adjustable Input level, LPF, Subsonic, bass boost function, Q control.
Advanced short circuit, overload, over heat protection.
Advanced clip limit / thermal power limit function.
Easy bridgeable with same amplifier.
Optional remote controller.
3 Detailed specs:
3.1 Test Condition.ì
All the specs were tested with following condition unless noted.
1. Power supply: 14.4V DC power supply
2. Test signal: 80Hz sine wave.
3. Loads: Resistor dummy load.
4. Environment: 25 degree C, open air.
5. Relative humidity: 70%.
6. Instrument: Audio Precision SYS-2322A

1.1Output power performance


Following table is the RMS output power with THD+N(<22KHz) value at 5%, 3%, 2% and 1%.
RMS power (1ohm) RMS power (2ohm) RMS power(4ohm)
5% 1700W 1190W 780W
3% 1620W 1140W 760W
2% 1600W 1100W 740W
1% 1500W 1000W 600W
Table 1Output Power with THD+N
Following chart shows the output power with THD+N curve at 4ohm loads, 2ohm loads and 1ohm loads.

Chart 1. RMS output power @4ohm with THD+N

Chart 2. RMS output power @2ohm with THD+NChart 3. RMS power @1ohm with THD+N

3.3 Frequency Response

1. -3dB frequency response: 13Hz~224Hz.
2. -1dB frequency response: 18Hz~175Hz.

3.4 LPF & Subsonic Filter features

  1. LPF adjustable from 35Hz~224Hz with 24dB/Oct slope.
  2. Subsonic Filter adjustable from 14Hz~60Hz with 24dB/Oct slope.

Chart 4.LPF response

Chart 5.Subsonic Filter response

3.5 Bass Boost Feature

Bass boost center frequency adjustable from 34Hz~90Hz, level adjustable from 0~13dB.

Chart 6.Bass boost frequency adjust(bass boost level set @ 12dB)

Chart 7.Bass boost level adjust (bass boost frequency set at 48Hz)

3.6 Bass boost Q control

Chart 9. Bass boost Q control (bass boost frequency set at 50 Hz)      


THD+N=0.165% @ 375W output power with 4ohm load.

1.2Input level


1.3Signal and Noise Ratio


1.4Protect Function

1. Overload:

 Protect less than 0.8 Ohm loads at full scale output power.

2. Short Circuit:

 Full rated power short circuit protect test:  passed.
 Full rated power long last short circuit test: 10 minutes passed.

3. Over temperature:

 Limit output power while inner temperature reach 75 degree C, protect while inner temperature reach 85 degree C.

4. Low voltage:

Protect while power supply voltage lower than 8.6V.

5. Over voltage:

Protect while power supply voltage over 15.6V.

6. Power limit / Clip limit.

Clip limit while THD+N≥1%.
Power limit while inner temperature over 75 degree C.


1.5Idle current and Efficiency:

  1. Idle current: 1.39A
  2. Efficiency:
Load 4 OHM 2 OHM 1 OHM
Efficiency (THD+N @ 1 % ) 89.6% 83.7% 76.0%

1.6Bridge method

X2000 can be bridged with same amplifier through single RCA cable, no addition switch needed. All the adjustable functions on slave amplifier will follow master once be bridged.


This amplifier’s size is at 228mmX393mmX53mm(W,L,H).