Product name: YD7120 mono power amplifier board

1:The power supply voltage is AC220V input, which also supports setting to AC110V

2: Maximum output peak power: 1000W at 4 ohm ； 500W at 8 ohm

3: Input impedance: 50K

4: Signal-to-noise ratio: 100DB

5: Frequency response 20HZ-20KHZ

6: Distortion: THD≤1%

7: Magnification: about 30 times

8: This power amplifier board is an integrated board of digital power amplifier and switching power supply

AC110V and AC220V power connection method：

220V connection method: AC IN and AC IN power supply input AC 210-230V GP3 GP4 disconnected

110V connection method: AC IN and AC IN interface.Connected to AC 110V, GP3 GP4 shorted

Do not exceed the set supply voltage range ±10％

Note:

1.Equipped with +24v G DC output, connected to a 24v fan.Pay attention to the polarity of the fan and do not reverse it.The fan interface cannot be shorted, otherwise it will cause failure and not work!

The high power of the power amplifier requires heat dissipation, and the no-load also requires heat dissipation. In addition to the heat dissipation of the radiator, there are many other heating elements. The ventilation and air convection of the installation environment between the injection rooms are very important.

2.The output interface has four ports. The two terminals are connected in parallel. It can be connected to any one terminal. It is used to connect the speaker, SPK-SPK+ load output, and connect the 4 ohm-8 ohm speaker. You cannot connect the speaker with a load of less than 4 ohm. Remember, the load is too small, it is easy to protect the speaker!

3.The auxiliary power supply outputs +/-15v to the pre-stage and the current is only 500MA. It cannot be overloaded, nor can it be connected to the input voltage. It is only output to the pre-stage board for small current.

4.For signal input, G means GND, which means ground wire, and it also means negative signal input. In means positive signal input. Don't reverse the polarity. Remember.When the input signal is up to 1.5V, the output power reaches the maximum value, and it cannot exceed the input 1.5V much to avoid excessive overload and damage to the power amplifier.

5.It is best to use a shielded wire for the input signal line to avoid interference.The input signal cannot only be connected to the signal input, but not to the signal ground. Remember to avoid damage caused by self-excitation.(Do not hot-plug the signal input)

6.The AC power supply is high-voltage, and it cannot be tied together with the bass wire. The AC input is high-voltage, and it cannot be tied together with the signal input, the auxiliary power supply +/-15 output, and the speaker output line.

Do not tie the signal input with the speaker cable.So as not to cause high-frequency self-excitation to damage the power amplifier.

7.The switching power supply is with high voltage, so remember to be careful not to touch the high voltage part with your hands.

8.D12 If the red light is on, it means that there is a short circuit in the power amplifier part.Maybe the fan is shorted, maybe the pre-stage power supply is shorted.Or the power amplifier is damaged.

If the temperature of the radiator exceeds 85 degrees, the power amplifier will automatically protect and stop working. After the temperature drops, it will automatically start.

Package inluced:

1Pcs 1000W Power Amplifier