DVD-Software.info

[Rich Sherman]

Hello fellow RAT's:

I have a pair of Tresco PA-993 Power Transformers
without any data sheets.

Is there a Tresco reference source on the net where I
can find the specs? Or an old catalogue anyone?

Thanks,

Rich Sherman

[RS McCown]

Your best bet might be to ask Mike here,
http://www.audioasylum.com/forums/magnequest/bbs.html

You might have read this in google from looking around, not your
?/answer but related to Tresco,

"I would find this surprising. If you look through the archives of the
Dyna
tranney engineering you will find that they really pretty much stuck (I
do know
of one exception) with the same company through thick and thin from day
one
till David sold off his interest to Tyco and Tyco sold out to ESS.
The company that did the work originally was Tresco. They were in the
Manayunk
section of Philadelphia....not to far from Acrosound who was on Shurs
Lane.
Tresco later became known as G&G Tresco. And yet later (either 1976 or
1980...think it was eighty) Technitrol bought out G&G Tresco. Technitrol
operated the tranney division until 1994. We bought the Dyna archives
from
them and a big share of their production equipment when they shut down
operations.
Everything from the A430 trans (which short of digging through the
archives)
was the first trans designed for David Hafler's new company Dynaco all
the way
up through the MK VI output, power and choke tranneys was the product of
Tresco
or one of it's successors.
The two exceptions I know of is that some C354 chokes were made in Japan
for
cost reasons and some of the iron for the MK VI amps where made in Japan
but my
understanding is that just for the amps being sent to Japan.
If you research David Hafler's company and business practices you will
find
that he was able to develop and maintain very long term business
practices with
key vendors. His sheet metal supplier (for chassis) was a company named
Dalco.
Dyna did business with this company until tyco sold out. Dalco was in
Philadelphia as well.
So I can't say definitively that Dyna never had any other tranney
vendors in
the US but the weight of evidence that I have access to and the people
whom I
know (like the former chief winder for Tresco when they were in
Manayunk) would
suggest otherwise.
Mike"