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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Help, my Perreaux amp has "mosfet mist" posted by Doug Flynn on December 19, 2004 at 00:30:46:
Monster amps can generate lots of RFI in their power supply and inject it back into the AC supply. The bigger the power transformer, and the lower the filter capacitor impedance, the worse this is. If your source shares this supply circuit, you could be suffering from the effects of this noise on the source component.There is little point in trying to filter the AC to the power amp, but you might find improvement from a filter to the source. Separate, dedicated circuits are a big help.
You might be able to reduce the noise, if that is the problem, with HexFRED rectifiers and a soft-start circuit (to keep from burning up the 'FREDs) in the SS amp.
Also be sure the SS amp's power transformers do not suffer from weak mechanical support. If they are on thin sheet metal panels and can bounce around, this will reduce the deep bass clarity.
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Follow Ups
- Check the AC supply. - Al Sekela 09:22:05 12/19/04 (0)
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