Subwoofer Amplifier 40W

Description

This amplifier delivers massive power and uses one IC and two power transistors. The circuit consists of an amplifier IC (a TDA 2030A) and a power stage consists of two transistors.  Amplifier can be powered with an asymmetrical supply voltage of 12 to 44 V.

Circuit Diagram:

Subwoofer Amplifier 40W

Part-list:

• R1-R3, R7 = 100 K?
• R6 = 8,2 kW
• R4, R5, R8, R9 = 1.40 Ω 1%
• R10 = 1 Ω
• C1 = 470 nF
• C2 = 10 V μF/63
• C3 = 4.7 V μF/63
• C4, C5, C7 = 220 nF
• C6 = 2200 V μF/50
• C8 = 1000 V μF/50
• D1, D2 = 1N4001
• T1 = BD712 or BD912
• T2 = BD711 or BD911
• IC1 = TDA2030A
• LS = speaker - 4/8 Ω
• Cooling = Fisher SK08/75