Twin Xfmr Specs.

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roadkingbluzs
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Twin Xfmr Specs.

Post by roadkingbluzs »

I am about to refurbish Silverface to Blackface Specs. a '72 MV Twin Reveb. Power tranny is a Woodward-Schumacher and OT is a TMI/Electrical Windings tranny. Can anyone provide info on this tranny. Does not look original to amp. Thinking of replacing with 85 watter. Thanks Bob
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David Root
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Re: Twin Xfmr Specs.

Post by David Root »

Electrical Windings was around for a long time and may have built some transformers for Fender, but I doubt it. If your OT is marked TMI it is not original because TMI was formed in 1983, and acquired EW some time thereafter.
roadkingbluzs
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Re: Twin Xfmr Specs.

Post by roadkingbluzs »

May be a EW, EIA 682 9214 are the markings. Looks to new. Maybe do all work before considering replacing tranny. Just trying to get this amp to Blackface mojo land. I will be replacing Carvin Bristish 12's. British... this is un- American!! I do have a good used MM 85 watter . Pretty quiet for all original or 95% orignal. See pics. Thanks Bob
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David Root
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Re: Twin Xfmr Specs.

Post by David Root »

92-14 would be the year and week of manufacture. If you have an old "correct" BF Twin OT, then by all means use it.

If not, check it out the way it is, if it sounds good, fine, if not, then I would try a Magnetic Components Twin OT.
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David Root
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Re: Twin Xfmr Specs.

Post by David Root »

Double post, sorry.
Last edited by David Root on Tue Jun 15, 2010 3:06 pm, edited 1 time in total.
roadkingbluzs
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Re: Twin Xfmr Specs.

Post by roadkingbluzs »

Thanks for info David Root. I will recap redo bias , remove MV etc. Oh,one other thing that may go is partical board speaker baffle and Carvin British 12's. Thanks Again Bob
roadkingbluzs
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Joined: Tue Mar 06, 2007 3:57 am
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Re: Twin Xfmr Specs.

Post by roadkingbluzs »

No original, but I do have a used Merc. Mag. 85watter I will use. Will save EW xfmr for future build. BTW can anyone provide info or dimensions on floating speaker baffle? Thanks Bob
Bill Moore
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Re: Twin Xfmr Specs.

Post by Bill Moore »

I used a 94 Twin OT for my last build, it has 4,8,16 ohm outputs, and a separate winding for a direct out.Image
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