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Hoffman Amps Forum image Author Topic: Low frequency distortion all of a sudden  (Read 3193 times)

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Offline Geezer

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Low frequency distortion all of a sudden
« on: June 18, 2005, 05:40:09 am »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
        > Low frequency distortion all of a sudden      
 
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Jukelemon
Junior tube assistant
Posts: 17
(3/24/04 10:26 am)
 Low frequency distortion all of a sudden
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 Brand new 59 Bandmaster amp clone. Played for 15 hours and sounded like it should/new. Sent to friend. The speakers were accidentally placed in the "spare"/unused speaker jack instead of the wired speaker jack on the chassis. The amp made a nasty noise and then blew a fuse. The speakers were placed back into the right jack and now there is a an awful distortion accurring after Volime is on 3 on the Low E string. It sounds like a blown speaker to give you a reference but the speakers (all three) are brand new.

Could the OT have shorted that quickly? We checked/replaced all tubes and that does not help.

Thanks.

Juke
 
Tiny Daddy
I will work on all amps
Posts: 567
(3/25/04 6:03 pm)
 Re: Low frequency distortion all of a sudden
--------------------------------------------------------------------------------
 I would guess the output transformer is arcing. Once this happens, some insulation is burned from a place on the windings and arcing continues.
 
 
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