【Product parameter】
Product Name: D-Class HIFI Digital Amplifier Board
Product model: RS2092S
Power supply voltage: Dual DC power supply ± 58--- ± 70V
Rated output power: 500W (± 65V power supply for 4 ohms load, distortion 10%)
Efficiency: >=90%
Signal to noise ratio: 90dB
Total harmonic distortion: 380W (± 65 power supply for a 4-ohm speaker, distortion<0.1%)
280W (± 65 power supply 8 ohm speaker, distortion<0.1%)
Frequency response range: 20Hz-20KHz
Speaker: 4-8 Ω
Voltage amplification factor: 36 times
Input sensitivity 1.5V (RMS)
Output short circuit protection: Yes
Output DC bias protection, also known as horn protection: Yes
Over temperature protection: Yes, if the temperature of the radiator field-effect transistor exceeds 100 ° C, the output will be turned off!
Be careful:
According to the power formula P=U * U/R=voltage * voltage/load, it can be seen that power is determined by voltage and load.
The higher the voltage and the smaller the load, the greater the power. The voltage range of the board supply refers to the voltage within this range,
and not all voltages and load powers are labeled as high power output. For example, when 12V is used to power a 4-ohm load, the maximum power is 15W,
and the maximum power is 7.5W at 8 ohms; when 24V is used to power a 4-ohm load, the maximum power is 50W, and the maximum power is 25W at 8 ohms;
at any time, the power supply must be greater than the power amplifier's power, otherwise the high volume cannot be turned on, the power will decrease and cut off,
and the corresponding power output cannot be achieved.
Instructions:
1. The rated power supply voltage is dual power supply ± 65V, and the voltage can work normally within ± 58V - ± 70V (if it exceeds 70V, it will burn out, and burning out is not included! ）If it is a ring bull, due to the lack of voltage stabilization function, the voltage will fluctuate with the power grid. Please use it to leave a margin. Do not connect the positive and negative terminals of the power supply incorrectly to avoid burning out the board
2. It is recommended to use a DC dual power supply with ± 65V filtering for power supply
3. It is recommended to use 10-18 inch 4-Euro to 8-Euro speakers for the speaker
4.Although audio output has short-circuit protection, try not to short-circuit as much as possible
5. Please carefully check before powering on to ensure that the wiring is correct before powering on.
6. The voltage amplification factor of this board is fixed at 40 times. If the output power is not enough, the preamplifier can be added according to the specific situation.
The wiring diagram is as follows:
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