Koss ESP

Headphone Heights

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For anyone with a set of ESPs, you may want to open the box and check the screws holding transformer and choke as well as others.

Recently I had noticed a hum in my 9bs and it was increasing. Today I opened the box for the first time ever and as I touched around, I found the transformer was a might shakey so I tightened all the screws in the box. Everyone of them was loose. I snugged them but did not muscle them to avoid cracking the pcb. The hum is now gone. Not sure if they were assembled loose and over time loosened up or were and just loosened over the years.
Don Brian Levy, J.D.
Toronto ON Canada

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Topic - Koss ESP - Brian Levy 09:01:25 09/24/14 (6)

RE: Koss ESP - unclestu 14:14:49 09/24/14 (5)

RE: Koss ESP - Brian Levy 16:50:40 09/24/14 (4)

RE: Koss ESP - The Duke 07:49:34 09/25/14 (3)

RE: Koss ESP - Brian Levy 12:01:31 12/14/14 (0)

RE: Koss ESP - Brian Levy 13:10:02 09/25/14 (1)

ESP9 Price - Brian Levy 11:51:48 12/14/14 (0)

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