Amplifier for Subwoofer

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I am starting a new project and will need an amplifier. The more power the better of course. I despise plate amps, so that's not an option.

I have a dayton audio APA150 already and it seems to fit the bill perfectly for another project, but I am always looking for other options.

I need at least 100 watts and price is of main concern. I would like to keep SWMBO happy and when i spend too much cash on amps....it makes her angry!
 
Uhm, there are lots and lots of circuits here for 100W amps. If you could narrow it down a bit it would help.

Will that be 100W into 8 ohms?

Do you happen to have a box full of power transistors that you want to use?

Do you have a suitable transformer for the power supply?

Stuff like that...
 
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