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PostPosted: Mon Mar 23, 2015 5:49 pm 
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Location: Guelph, Ontario
So I have a single coil guitar (epiphone casino - p90's) and I understand that there is hum with single coils but I have played on other tube amps and the hum has been minimal, it is strange because the hum on the tweed over powers the sound of the guitar. Do I need to shield the amp and/or the guitar???

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Last edited by fmena on Mon Mar 23, 2015 6:00 pm, edited 1 time in total.

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PostPosted: Mon Mar 23, 2015 5:53 pm 
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Location: Toronto, Canada.
Sounds like you have a grounding issue with your amp. Post some pics of it.

Could also be a bad cable, dirty power, bad tube, etc.

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PostPosted: Mon Mar 23, 2015 6:53 pm 
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When the guitar is unplugged from the. amp, does it hum loudly? That will probably tell you if its guitar or amp related.

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PostPosted: Mon Mar 23, 2015 9:30 pm 
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When the guitar is unplugged the amp does not hum, however I can play with other tube amps with minimal hum with the epiphone casino p90's. The tweed amp did not hum when I played it with the an epiphone dot.

I can minimize the hum to almost nothing if I play the guitar at a certain angle in relation to the amp but it has to be a a very specific angle and any little movement outside of that specific position the hum comes back and overpowers the sound of the guitar.

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PostPosted: Mon Mar 23, 2015 11:05 pm 
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Sounds like shielding in the amp maybe but certainly its not entirely amp related.

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PostPosted: Mon Apr 06, 2015 8:21 pm 
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where should I shield and with what material just copper or are there other options

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PostPosted: Mon Apr 06, 2015 10:37 pm 
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Get some Aluminum Tape from Home Depot, heating ventilation dept. shield the panel covering the rear with that.

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