Product details:
Symsym5 is a well-known hifi circuit on the DIY Audio forum. It has good sound quality and a power of 200W, suitable for household use. The circuit works in Class AB, saving power and maintaining stable performance over long periods of time.
Parameters:
Working status: Class AB.
Output power: 100W+100W (*V=±45v)
Working voltage: DC Dual 20V to dual 45V.
Distortion: THD is 0.002% into 1 kilohertz and full power .THD is 0.005%
into 10 kilohertz and full power.
Input interface: dual channel signal input.
Output interface: dual-channel speaker output.
Power supply mode: dual power supply working mode.
PCB specification: 180X69X1.6mm.
Specifications of main parts of circuit board:
1.High power transistor: NJW0302/0281 2 pairs of 4 outputs.Drive transistor: Toshiba famous transistor 2SC4793/2SA1837, thermocouple is ST BD139.
2.The small signal transistor is ON MPSA18 2N5551, 2N5401, For PhilipsBC556/BC546, and MPSA18 can be replaced by Toshiba 2SK170.
3.Coupling capacitor: German WIMA 3.3 UF red shell film capacitor.
