Monday, February 08, 2016

Simple 100W Subwoofer Power Amplifier

Simple 100W Subwoofer Power Amplifier. A Subwoofer is a loudspeaker which produces audio signals of low frequencies. The first subwoofer amplifier was developed in 1970 by Ken Kreisler.  It is basically used to improve the bass quality of audio signals. Here we design a subwoofer amplifier producing audio signals at low frequencies from 20 Hz to 200Hz and with an output power of 100W, used to drive a 4 ohm load.

Subwoofer Amplifier Circuit Principle:

Audio Signal is first filtered to remove the high frequency signals and allow only the low frequency signals to pass through it. This low frequency signal is then amplified using a voltage amplifier.  This low power signal is then amplified using a transistor driven class AB power amplifier.
Simple 100W Subwoofer Power Amplifier


Circuit Components:
COMPONENT
VALUE
R1
6K
R2
6K
R3
130K
R4
22K
R5
15K
R6
3.2K
R7
300 Ohms
R8
30 Ohms
R9, R10
3 K
C1, C2
0.1uF, electrolyte
C3,C5,C6
10uF, electrolyte
C4
1uF, electrolyte
Q1
2N222A
Q2
TIP41
Q3
TIP41
Q4
TIP147, PNP
D1, D2
1N4007
Dual Supply
+/-30V



Read more this circuit : http://www.electronicshub.org/100w-subwoofer-amplifier-circuit/#Applications_of_Subwoofer_Amplifier_Circuit

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.


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