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Identifying Power Trannie from Sub?
Identifying Power Trannie from Sub?
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Old 22nd August 2013, 10:21 PM   #1
Freecrowder is offline Freecrowder  United States
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Identifying Power Trannie from Sub?
Default Identifying Power Trannie from Sub?

I have a Proficient S-12 powered sub. The trannie has gone bad and i'm trying to identify the manufacturer. Nomenclature on side of this toroidal is three separate lines.

150-R0955504
LS-A10714-PT-T
LEI-4 0547

Around 250 Watt plate amp on back of sub.

Called Proficient but they are no help.

It has different taps on primary for 120-240vac
Thanks for any help.
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Old 27th August 2013, 02:05 AM   #2
dangus is offline dangus  Canada
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Location: Vancouver Island
It was probably custom made by an obscure Chinese factory. Your best bet is to just buy another plate amp, or use a separate amplifier (even one channel of an old stereo receiver).
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Old 28th August 2013, 09:25 PM   #3
Andersonix is offline Andersonix  Sweden
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Location: Marin County, California
Identifying Power Trannie from Sub?
Are you trying to find a replacement?
Look at the PS caps' DC voltage rating and choose another transformer that will give close --but not above-- those rail voltages after rectification (Vrect = Vsec * 1.4). Also choose an appropriate VA (load) rating for your sub.
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