Subwoofer Circuit?..

[mytech]

Hi here is the circuit for subwoofer, i tried this it was nice, i just took the output from 8 and gave to another power amp. to drive the woofer, because i couldn't find those transistors.. any idea of substitute for those transistors?.
Also if you some other good circuits for subwoofer upload here..
Thanks in advance.

 

[audioguru]

The very old amplifier circuit you found is a poor amplifier and has an output of only about 60W. Make a newer better amplifier with modern parts that are still available.

 

[mneary]

If you cannot find those transistors then substitutes won't help you. The transistors specified are available everywhere.