Acoustat Model 3 MK121 Interface

Check out the Audio Circuit Acoustat pages everything you want to know about Acoustats is there.

This website may be helpful
http://www.integracoustics.com/MUG/MUG/tweaks/acoustat/

I have a pair of Mk 121B's. thats what the label on the transformer says. Both fuses are blown. Can you tell me what size and type fuses these require. Also, where can I get a manual for these beauties.

Thanks,
John Heim 817-822-7699

Any electronics technician could replace the capacitor with a correct replacement from an electronics supply house with matching value, polarity style, and voltage rating. You may want to use an "audiophile" grade capacitor and replace the identical one in the other channel speaker as well.