According to the formula of power P = U * * voltage/U/R = voltage load, the power is determined by the voltage and the load, high voltage, small load, the greater the power, the board power supply voltage range refers to the voltage in this range board can work normally, not all the voltage and the load power is marked as high power output, for example, 12 v power supply 4 the load, Maximum power 15W, 8 ohms maximum power 7.5W; 24V power supply 4 Ohms, maximum power 50W, 8 ohms maximum power 25W; At any time, the power of the power supply must be greater than the power of the amplifier, otherwise large volume with immobile, the power will be reduced and broken, can not reach the corresponding power output. 1. Power supply voltage: double DC power supply ��58-- ��70V

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2. Rated output power: 500W(��65V power supply 4 Ohm load, distortion 10%)

\ 3. Efficiency: >=90%

\ 4. SNR: 90dB

\ 5. Total harmonic distortion: 380W(��65 power supply 4 ohm horn, distortion <0.1%)

\ 280W(��65 power supply 8 ohms, distortion <0.1%)

\ 6. Frequency response range: 20HZ-20khz

\ 7. Horn: 4-8 ��

\ 8. Voltage amplification: 36 times

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9. Input sensitivity 1.5V (RMS)

\ 10. Output short circuit protection: yes

\ 11. Output DC bias protection, namely horn protection: yes

\ 12. Overtemperature protection: Yes, the radiator fET temperature is higher than 100��C, turn off the output! Two, the use of notes:

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1. Rated power supply voltage is double power supply ��65V, voltage in ��58-- ��70V can work normally (more than 70V, will burn, burn out will not package!) If it is a ring ox, the voltage will fluctuate with the power grid because it does not have the voltage regulator function. Please use the allowance. The positive and negative poles of the power supply should not be connected incorrectly to avoid burning the board

2. The recommended power supply is dc dual power supply with ��65V filter

\ 3. 10-18 "4-8" speaker is recommended

\ 4. Although the audio output has short circuit protection, but try not to short circuit

\ 5. Please check carefully before powering on and make sure the wiring is correct before powering on.

\ 7. The voltage amplification of this board is fixed at 40 times. If the output power is not enough, the front stage amplification can be added according to the specific situation.

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