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previous: Steve A. Jay: -- 8/1/2000 3:46 AM

Re: what is dumble about...

8/2/2000 5:52 PM
andyfuchs	Re: what is dumble about... Steve: I'm really not too keen on starting a dialogue on specifics about what I'm doing in my modified amps or the production stuff, only because it (enevitably) leads to MORE questions. As we've discussed privately, I do suffer constant angst about trying to be both an Ampage "team player" and yet, be able to produce products that remain outside the forum. (I'll share some things from my bag of tricks, I just would rather not let you look inside it.) Rather than open the proverbial "can-o-worms", I will say that my general power supply philosphy is lots of reserve capacitance at the start. I know many feel that power supply sag is an inherent part of an amps sound (and I agree), but I prefer to induce this by switching to triode, or knocking down output power in other ways. I also think hi-speed rectifiers are very beneficial to the sound as well. The modified amps have fairly traditional R/C filters w/mylar bypasses. My choke filtering is usually "beefed" as space permits. Yes there is a practical maximum before there are no more returns. Yes, it increases the load on the P-former (mostly the turn-on surge), but I haven't lost a tranny yet, and I did this to over 2,000 Dynacos, and to a least few hundred Fenders over the past 20 years. The production amps have significant differences in both the power supply and audio circuit's (particularly in the preamp), which I choose to not discuss. I know you understand, and I hope the other forum members do as well. AF

8/2/2000 5:52 PM

andyfuchs

Re: what is dumble about...

Steve: I'm really not too keen on starting a dialogue on specifics about what I'm doing in my modified amps or the production stuff, only because it (enevitably) leads to MORE questions. As we've discussed privately, I do suffer constant angst about trying to be both an Ampage "team player" and yet, be able to produce products that remain outside the forum. (I'll share some things from my bag of tricks, I just would rather not let you look inside it.)

Rather than open the proverbial "can-o-worms", I will say that my general power supply philosphy is lots of reserve capacitance at the start. I know many feel that power supply sag is an inherent part of an amps sound (and I agree), but I prefer to induce this by switching to triode, or knocking down output power in other ways. I also think hi-speed rectifiers are very beneficial to the sound as well.

The modified amps have fairly traditional R/C filters w/mylar bypasses. My choke filtering is usually "beefed" as space permits. Yes there is a practical maximum before there are no more returns. Yes, it increases the load on the P-former (mostly the turn-on surge), but I haven't lost a tranny yet, and I did this to over 2,000 Dynacos, and to a least few hundred Fenders over the past 20 years.

The production amps have significant differences in both the power supply and audio circuit's (particularly in the preamp), which I choose to not discuss. I know you understand, and I hope the other forum members do as well.

AF

Replies:

Steve A. Andy: &n... -- 8/3/2000 5:25 AM