Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Gareth81 on June 27, 2012, 02:13:07 am
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These two amps a pretty much identical except for the tremolo circuit in the 1959t.... and the 1959t doesn;t seem to have a choke!? :w2:
See the attached schematics, this must just be a mistake, yes?
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If the 1959T is from the late 80's, then it will have a resistor in place of the choke.
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According to these schematics, there is no extra resistor in the place of the choke.
Would not having a choke raise the voltage levels on the B+, to accommodate for the extra tube?
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According to this thread (http://www.lespaulforum.com/forum/showthread.php?t=157668), the 1959T does have a choke (you can see it in the chassis pictures).
So it must be an error on the schematic.
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From what I read, they ran chokes up until 1987 and the reissues were built with chokes, however. :dontknow:
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What I was saying is that thread has pictures of an original 1959T. The original amp has a choke on the chassis (and it's the proper, original style with what appears to be authentic age). Therefore, the best guess is the 1959T included a choke and the schematic is in error.
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Roger.