<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><strong><span style="font-size:20px;">【Product parameter】</span></strong><br /> <br /> <span style="font-size:18px;">Product Name: D-Class HIFI Digital Amplifier Board<br /> Product model: RS2092S<br /> Power supply voltage: Dual DC power supply &plusmn; 58--- &plusmn; 70V<br /> Rated output power: 500W (&plusmn; 65V power supply for 4 ohms load, distortion 10%)<br /> Efficiency: &gt;=90%<br /> Signal to noise ratio: 90dB<br /> Total harmonic distortion: 380W (&plusmn; 65 power supply for a 4-ohm speaker, distortion&lt;0.1%)<br /> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;280W (&plusmn; 65 power supply 8 ohm speaker, distortion&lt;0.1%)<br /> Frequency response range: 20Hz-20KHz<br /> Speaker: 4-8 &Omega;<br /> Voltage amplification factor: 36 times<br /> Input sensitivity 1.5V (RMS)<br /> Output short circuit protection: Yes<br /> Output DC bias protection, also known as horn protection: Yes<br /> Over temperature protection: Yes, if the temperature of the radiator field-effect transistor exceeds 100 &deg; C, the output will be turned off!</span><br /> <br /> <strong><span style="font-size:18px;">Be careful:</span></strong><br /> <span style="font-size:18px;">According to the power formula P=U * U/R=voltage * voltage/load, it can be seen that power is determined by voltage and load.&nbsp;<br /> 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,<br /> &nbsp;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,&nbsp;<br /> 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;&nbsp;<br /> at any time, the power supply must be greater than the power amplifier&#39;s power, otherwise the high volume cannot be turned on, the power will decrease and cut off,&nbsp;<br /> and the corresponding power output cannot be achieved.</span><br /> <br /> <strong><span style="font-size:18px;">Instructions:</span></strong><br /> <span style="font-size:18px;">1. The rated power supply voltage is dual power supply &plusmn; 65V, and the voltage can work normally within &plusmn; 58V - &plusmn; 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<br /> 2. It is recommended to use a DC dual power supply with &plusmn; 65V filtering for power supply<br /> 3. It is recommended to use 10-18 inch 4-Euro to 8-Euro speakers for the speaker<br /> 4.Although audio output has short-circuit protection, try not to short-circuit as much as possible<br /> 5. Please carefully check before powering on to ensure that the wiring is correct before powering on.<br /> 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.</span><br /> <br /> <strong><span style="font-size:18px;">The wiring diagram is as follows:</span></strong> <p style="text-align:left;margin:0;"><br /> </p> </div></div>