There are two types ,According to the power tube is not the same When purchasing, please choose
A types : ON MJ15025 / MJ15024 gold seal power tube
B types: ON MJL4281 / MJL4302 plastic seal power tube
Accessories : Signal cable, cable, screw, thermal aluminum plate (silver / black)
Features:
1; power tube with a new original ON Semiconductor audio tube (MJ15025 and MJ15024 tube king) per channel 3 to 6 PCS. Push the tube and the voltage amplifier tube were used (MJE15035 / 15034 and MJE15033 / 15032) audio on the tube, the circuit design is reasonable. Suitable for 4-8 inch speaker use.
2: Board integrated speaker protection circuit, the protection circuit to separate power supply.
Power amplifier board basic parameters:
Power amplifier board input voltage: positive and negative 30V-60V DC input.
Output power: Class A; 50W + 50W. Class AB: 350W + 350W. ( Class AB : need to own debugging , When sending product, it is class A )
Output impedance: 4-8 ohms
Recommended transformer parameters: dual 28-38V dual AC output power (500W or so)
Amplifier board Overall dimensions: 285 * 110 * 40 MM (per PCS)
Circuit board label symbol wiring instructions:
VC +: Connect the power supply positive
VC-: Connect the power supply negative
GND; connect the power ground
VA +: with voltage amplification independent power supply positive
VA-: even the voltage amplifier independent power supply negative
GND: ground wire
INPUT: Signal input
OUT: the speaker
AC12 AC speaker protection power supply
A types: picture display :
B types: picture display: