Re: Transformer Re-Winding
- From: Xtrchessreal <XtrChessreal@xxxxxxxxx>
- Date: Wed, 7 Jan 2009 23:50:15 -0800 (PST)
On Jan 7, 9:53 pm, aclar...@xxxxxxxxx wrote:
On Jan 7, 3:23 am, Bobby P Longsocks <Nos...@xxxxxxxxxxx> wrote:
On 2009-01-07 00:26:39 -0500, "Stephen Cowell" <scow...@xxxxxxxxxxxxx> said:
"Bobby P Longsocks" <Nos...@xxxxxxxxxxx> wrote in message
I've got an old 57 Bassman, sadly the Choke burned out earlier this year,
now the Pwr Transformer died.
Rather then Replacing all these parts as this amp becomes less, and less
original. What are my options out there to have the Choke and Pwr
Transformer Re-Wound? I know it'll be expensive, but every Pot,
transformer, Speaker / Serial # is original, and I'd like to keep the amp
$180 apiece, for PT/OT.
Thats actually Really cheap, although they don't list the choke, and
the 57 Bassman is a little different from the 59 - but I've sent them
an inquiry e-mail - thanks for the link.
Bobby P Longsock
There were at least two different Bassman circuits produced in 1957.
The 5E6 built through May used the 7993 PT and the 5F6 circuit
introduced in June used the Triad 8087. These models are not date
coded and the 8087 model was used in the Bassman, and several other
Fender amps, through 1960. Two different chokes were used in 1957 too,
14597 and 14684.
Clarke- Hide quoted text -
- Show quoted text -
Personally I think keeping the vintage, vintage... is a good thing.
However when it comes to Transformers they can be matched easier these
days than in the past. Differences in hysteresis make it such that
none can be duplicated exactly. The average Hysteresis trace is what
your after but keep in mind that over time all tranny's change their
hysteresis anyway. Its a combination of windings, quality of the
material of the winding wire, the laminates, iron purity or impurity.
The fact is no two hysteresis curves are the same even on the same
transformer. Its dynamic and cannot be reproduced. The iron will
have lost reluctance in areas and then increased in others causing
unique hysteresis curves specific to that iron = un matchable. This
does not necessarily mean its a good thing or a bad thing you could
have some frequency response loss in that iron if compared to its
original response you might have increased response.
Having said all that if was trying to keep a vintage sound I would
replace it or rewind it too. Why? Because its broken and how else
are you going to do it? If it was not a vintage sound I would buy
some cheap stuff that had the same input and output resistance