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Hoffman Amps Forum image Author Topic: Ot hole spacing  (Read 1946 times)

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Offline Stankfut

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Ot hole spacing
« on: October 09, 2012, 11:33:18 am »
Hey yall, what is the spacing for the mounting holes on Doug's champ ot? I need a se ot with 2 3/8 spacing. Thanks

Offline SILVERGUN

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Re: Ot hole spacing
« Reply #1 on: October 09, 2012, 11:55:55 am »
Here's the page with the xfmr specs:
http://www.el34world.com/Transformers/fentrans.htm

Look's like the Champ OT (p/n#022905) has the 2 3/8" mounting you need

Offline Ed_Chambley

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Re: Ot hole spacing
« Reply #2 on: October 10, 2012, 08:18:52 am »
I choose the OT I want and simply drill one hole and use one of the existing hole if it is a build.  If it is a restoration, that is a different story.  Most times you can just drill the hole in the OT mount, but if not another small hole in a chassis is no big deal.  Why sacrifice using the OT you want just because the holes don't align?  If this is not acceptable, you can always make a mounting plate that fits the holes in the chassis and drill 2 other holes for the OT.

Offline Stankfut

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Re: Ot hole spacing
« Reply #3 on: October 10, 2012, 09:19:19 am »
ĄD'oh! I knew that Doug had that info on his site....i just couldn't find it :BangHead:. This is a restoration of sorts...cheap Japaneseamp from the late sixties. The ot mounts on the speaker frame....the chassis is really too small to mount the ot to it

 


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