Main technical parameters:

1. Power supply voltage: dual DC power supply ± 58--- ± 85V

2. Maximum rated output power: 1000W (± 85V power supply with 4 ohm load, distortion of 1%)

3. Efficiency:>=90%

4. Signal to noise ratio: 90dB

5. Total harmonic distortion: 1000W (± 85 power supply 4 ohm horn, distortion<1%)

500W (± 85 power supply 8 ohm horn, distortion<1%)

6. Frequency response range: 20Hz-22KHz

7. Horn: 2-8 Ω, special attention, if equipped with a 2-ohm low resistance horn, please supply power below ± 65V

8. Voltage amplification factor: 36 times

9. Input sensitivity 1.5V (RMS)

10. Output short circuit protection: Yes

11. Output DC bias protection, i.e. horn protection: Yes

12. Over temperature protection: Yes, if the temperature of the radiator field-effect tube exceeds 100 ° C, turn off the output!

13. Amplifier board size: length x width x height=132x68x45mm

14. Weight: 260 grams

2、 Precautions for use:

1. The rated power supply voltage is dual power supply ± 75V, and the voltage can work normally between ± 58V and ± 85V. If it is a power frequency transformer, please leave margin for voltage fluctuations. The power supply consists of three power lines, and the positive and negative poles of the power supply should not be connected incorrectly to avoid burning the board

2. It is recommended to use a DC dual power supply with ± 75V filtering for power supply

3. It is recommended to use a 10-25 inch 2-8 ohm speaker for the speaker

4. Although the audio output has short-circuit protection, try not to short-circuit it as much as possible

5. Before powering on, please carefully check to ensure that the wiring is correct before powering on.

7. The voltage amplification factor of this board is fixed at 40 times. If the output power is insufficient, the front stage amplification can be added according to the specific situation.