New Edcor Iron of ST-70 Interest

knowledge base for the classic Dynaco ST70

New Edcor Iron of ST-70 Interest

Postby Geek » Wed May 01, 2013 5:00 am

I was browsing Edcor's "New Products" page for something unrelated and saw this:
http://edcorusa.com/p/1063/xpwr233_120

Looks like a beefy tranny for EL34 or KT88 use with paralleled GZ34 capability :))

Cheers!
-= Gregg =-
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
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Re: New Edcor Iron of ST-70 Interest

Postby rongon » Wed Dec 02, 2015 11:47 pm

Does that trannie drop onto an ST70 chassis without drilling new holes?

One possible problem is that this trannie is upright mounting, which will orient its core in a line with the cores of the OPTs in an ST70 chassis. That could couple 60Hz hum into the OPTs, right? Not a good thing if that happens. Is that a problem, you think?
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Re: New Edcor Iron of ST-70 Interest

Postby Geek » Thu Dec 03, 2015 12:57 am

rongon wrote:Does that trannie drop onto an ST70 chassis without drilling new holes?


Haven`t tried it. An adapter plate from a square of aluminum isn`t beyond most weekend DIYèrs.

One possible problem is that this trannie is upright mounting, which will orient its core in a line with the cores of the OPTs in an ST70 chassis. That could couple 60Hz hum into the OPTs, right? Not a good thing if that happens. Is that a problem, you think?


That`s why power transformers are moutned at 90 degrees to the output transformers. Simple and effective.

Cheers!
-= Gregg =-
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Re: New Edcor Iron of ST-70 Interest

Postby fp2000 » Mon Nov 14, 2016 11:29 am

that transformer will not work. It only has one 6.3v heater supply good for 5 A. You need another heater supply or higher amperage. more like 7 or 8 A.
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