1: Power amplifier board using power on the tube (2SA1943 and 2SA5200) per channel: 3 pairs . Push the tube for (2SC2073 and 2SA940) audio pairs tube .Suitable for 4-8 inch speakers .
2: Speaker protection circuit, a separate power supply, do not interfere with each other .
Amplifier board parameters:
Input voltage: + - 30V - 60V, DC input.
Output power: Class A: 50W + 50W, Class AB: 250W + 250W (own regulation).
Output impedance: 4-8 ohms
Speaker protection parameters:
Using the original European mother silver silver contact relay, reliable contact
7812 regulator power supply, more stable performance.
Supply voltage: AC 12-18V 0.2A 3W or so
Through the circuit, the red light, the circuit normal 3-5 seconds, green light. Circuit start,
Maximum load power 400W, the midpoint of the potential drift 1V, protection start
Transformer parameters: double 28-38V, dual AC output power (500W or so)
Amplifier board size: 240 * 55 * 50 MM / PCS
2SC5200 / 2SA1943 version ; image display:
Power tube 2SC5200 / 2SA1943, voltage amplification; 2SC2073 / 2SA940, push tube; 2SC5171 / 2SA1930 .
MJL0281 / MJL0302 version , Please contact for the time of purchase, the price is: $ 110
Power tube: MJL0281 / MJL0302, voltage amplification: MJE15033 / MJE15032, push tube: MJE15034 / MJE15035