In Reply to: RE: 80 Hz amp posted by dave slagle on November 25, 2015 at 07:33:16:
This type of circuit does work to provide a simple single volume control subwoofer option, provided the sub amp has a decent (24db) crossover. I use a very complex 24db electronic crossover that I have put in a lot of time and money into. It sounds great, but this little circuit probably can get you 90% of the way there with compromises.
In terms of the input transformer, you will have to ask Jack, it would seem the 10K and the 100R are the reflected impedance. I assume the 100R is a tap, not certain how it is calculated/implemented here.
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Follow Ups
- Intended as a simple circuit - Chip647 08:50:34 11/25/15 (0)