Product Description Packing: Yes Channel: 1 Model: 1000W power amplifier audio board Maximum power per channel: 200W or more Name: AIEMA:: None Output power: 1000W Product description: 1000W digital power amplifier with switching power supply 1. Power supply voltage AC220V input (default/AC110V input (AC100-120V, AC110V, CP3 CP4 connected together, 60HzAC200-240V, AC220V, CP3 CP4 open circuit) 50Hz2. Speaker load: 4-83. RMS power: 500W/4 ohm 300W / 8 Ohm4. Peak power: 1000W / 4 Ohm5. Channel: mono 6. Frequency response: 20HZ--20KHZ7. Pre-voltage output +15v, 0V, -15V8. Fan voltage output +24V9. Distortion: THD1%10 .Input sensitivity: 1.5V 11. Magnification: 30 times 12. Power-on delay, impact resistance sound: 1-3 seconds 13. Speaker output short circuit protection: Yes 14. Size: 200X130X42mm Note: Due to the large power of the power amplifier board, a Fans (DC24V fans) must be installed for long-term high-power operation. The power is high and the heat is high. Features: 1. The power is very high and requires a fan for heat dissipation. It comes from the right digital amplifier section and the left side of the switching power supply section. 2. Temperature protection: When the radiator temperature rises to 85°C, protection will automatically start and the amplifier will stop working. After the radiator temperature drops, the amplifier automatically starts working. 3. Overload protection: It will protect when the load is overweight 4. Speaker protection: When the output has DC, the relay is disconnected to protect the speaker. 5. Anti-shock: There is an NTC thermistor when starting up to prevent surge current 6. Start relay delay. Note: 1. AC N, AC L power input AC 210-230V. Do not exceed the supply voltage range. 2. AC N and AC L power input AC power can be changed to 110V. 3. The 220V power supply cannot be used anymore. The working state of AC100-115V is to connect any pin of CP3 to any pin of CP4.4. AC200-240V CP3, CP4 OPEN5.P1 two-core row +24v G DC output, connected to 24v fan. Pay attention to the polarity of the fan and do not connect it reversely. The fan interface cannot be short-circuited, otherwise it will cause malfunction and fail to work. 6. The power amplifier has high power and needs to dissipate heat, even when it is no-load. In addition to radiators, there are many other heating elements. These components also require a fan to blow, such as transformers, output inductors, large resistors, large capacitors, and ballast bridge stacks. These are relatively large amounts of heat and require fans to blow them out. It is recommended that the fan blow air from the amplifier section to the power supply section. 7. The output interface has four ports. Both terminals are connected in parallel. It can be connected to any terminal. Used to connect speakers, SPK-SPK+ load output, and connect 4-8 ohm speakers. Speakers with a load less than 4 ohms cannot be connected. Please remember that if the load is too small, it is easy to protect the speaker. 8. The auxiliary power supply of the P2 row outputs +/-15v to the front stage, and the current is only 500MA. It cannot be overloaded or connected to the input voltage. It only outputs to the preamp board. 9. The G in of the P2 row is the signal input terminal. G stands for GND, which stands for ground wire. It also means negative signal input. in means positive signal input. Do not connect with reverse polarity. Remember, when the input signal reaches 1.5V, the output power reaches the maximum value. It cannot exceed the input 1.5V by too much to avoid excessive overload and damage to the power amplifier. 10. It is best to use shielded wires as input signal wires to avoid interference. The input signal cannot be connected only to the signal input terminal and not to the signal ground. Remember to avoid damage caused by self-excitation. (Please do not hot-swap the signal input). It is not recommended to connect to mobile phone signals. 11. The AC power supply is high voltage and cannot be connected in parallel with the power supply. Bass line. The AC input is high voltage and cannot be tied together with signal input, auxiliary power +/-15 output, or speaker output lines. 12. Do not tie the signal input and speaker cable together. To avoid causing high-frequency self-excitation to damage the power amplifier. 13. The switching power supply has high voltage. Remember not to touch the high voltage part with your hands. 14. If the red light of D12 is on, it means there is a short circuit in the power amplifier part. The fan may be short-circuited, the preamp power supply may be short-circuited, or the amplifier may be damaged. 15. If the radiator temperature exceeds 85 degrees, the amplifier will automatically protect and stop working. It will start automatically after the temperature drops. Packing list: 1 piece 1000W amplifier