[Jukebox-list] Seeburg 100C Hum

[Wesley Dean]

    Gary, there is a flaw in the design of the speaker cable. The voice 
coil, field coil and the jumper share the same grounding pin. If the socket 
is corroded, the return of the high voltage center tap can cause a voltage 
drop that will appear across voice coil and cause hum. Additional grounds on 
the vacant pins and rerouting separate grounds for the voice and field coils 
will correct this problem. Of course replacing the socket is the best way to 
correct this for the next twenty years. Wes
e----- Original Message ----- 
From: "Gary Young" <gazzyoung_uk at yahoo.co.uk>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Wednesday, April 04, 2007 11:52 AM
Subject: Re: [Jukebox-list] Seeburg 100C Hum


Sometimes hum can be caused by faulty filter
capacitors (metal cans)

Gary



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