wrote:
: thought Princetons must NEVER use a solid-state
: rectifier....whats the deal???
Never never... if you have the stock 6V6's, because they can't take the
higher voltage. However, the thread here is about converting to 6L6s
or 5881s. *Now* the problem is not overvoltage, its too much heater
current. If you use a solid state rectifier, you gain the 15w of power
that the 5U4 heater is burning up. This makes up for the additional
5.7w loss of a pair of 5881s.
Distilled answer: (Princeton specific)
1. If you have 6V6s, you *can't* use a ss rectifier.
2. If you convert to 5881s, you *have* to use a ss rectifier.
--
------------------------------------------------------------------------
/* mike--(at)--rimenet.com "Less is more..." */
------------------------------------------------------------------------
From SRSN81--(at)--rodigy.com Tue Jan 16 21:55:25 CST 1996
Article: 8109 of alt.guitar.amps
From: SRSN81--(at)--rodigy.com (Joseph Pampel)
Newsgroups: alt.guitar.amps
Subject: Re: 6L6/5881 in a Deluxe??
Date: 16 Jan 1996 05:37:27 GMT
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Thomas Madden wrote:
>
>thought Princetons must NEVER use a solid-state
>rectifier....whats the deal???
"never" is a dirty word really.. What I think people mean when they say
things along these lines, like "a Deluxe Reverb or a Princeton must
Never use a solid state rectifier" is not that the amp circuit can't take
it, but that the 6V6 output tubes are already getting enough of a beating
and you shouldn't raise their B+ anymore. (which is what would happen if
you installed a solid state rectifier.) If you changed to other output
tubes, say 5881's, you could switch to a solid state rectifier, and in
fact it would be advisable to free up every extra bit of current the
power tranny could deliver since the 6L6/5881 uses a lot more filament
current and will really overheat a Princeton PT. losing the tube
rectifier will save that PT 2 to 3 amperes of current (which it would
have used to light the rectifier tube filament) and would in fact
increase its abilities to deliver more current on its other windings so
the 5881's wouldn't be as much of a problem (though still less than ideal
probably) I'd personally advise leaving Princetons alone, as they don't
benefit IMO from output tubes swaps as much as the Deluxe can. The
Deluxe rvb has a bigger power supply, better output tranny and more drive
>from the pre-amp all of which lends itself to being a better candidate
for a tube swap.
Joe
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