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Hum

3/22/1999 11:12 AM
Joe Ball	Hum I've been experiencing alot of hum from my 70's blackface SuperTwin Reverb (385W Peak 180W RMS). It's the 2 channel model with 5 band EQ and a distortion section that's too nasty to use!! I just replaced tubes with all new matching Sovteks and can tell very little difference. The technician who recently did the work mentioned missing 2 tube shields. Could this produce hum? Any suggestions as to what I might try? The hum is at it's worst when I take my hands off the guitar..... I've tried two guitars so I don't feel it's in the guitar!! I appreciate any suggestions! Thanks in advance!!

3/22/1999 11:12 AM

Joe Ball

Hum

I've been experiencing alot of hum from my 70's blackface SuperTwin Reverb (385W Peak 180W RMS). It's the 2 channel model with 5 band EQ and a distortion section that's too nasty to use!! I just replaced tubes with all new matching Sovteks and can tell very little difference. The technician who recently did the work mentioned missing 2 tube shields. Could this produce hum? Any suggestions as to what I might try? The hum is at it's worst when I take my hands off the guitar..... I've tried two guitars so I don't feel it's in the guitar!! I appreciate any suggestions! Thanks in advance!!

Replies:

Steve Jones Search the archive for the word "hu... -- 3/22/1999 12:21 PM
Dave James Hi Joe,Unshielded tubes can... -- 3/22/1999 1:22 PM
Giacomo >hum is at it's worst when I take m... -- 3/22/1999 3:01 PM