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Post subject: Funny business.
Posted: Sat May 18, 2013 6:23 am
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Yea, I'm in the middle of it.

My Telecaser: It's good, alright. But it's weird.

My half stack: It's also good, but also weird.

They both have the strangest issue. If and only if the amp is sitting on a hardwood floor and the user is barefooted, will it squeel. What exactly is going on?

I realized this when a friend came over and we played. I drummed, and he played guitar. He actually wears shoes, and the amp was sitting on a rug at first. Then we repositioned it and I started playing it and it was all squeely.

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Post subject: Re: Funny business.
Posted: Sat May 18, 2013 7:30 am
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aha!

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Post subject: Re: Funny business.
Posted: Sat May 18, 2013 5:17 pm
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Relevant? Not sure? lel

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Post subject: Re: Funny business.
Posted: Sat May 18, 2013 10:23 pm
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If it is a tube amp or a hybrid with a tube preamp, there's a chance the preamp tube is becoming microphonic and needs replacing. If gently flicking the side of the preamp tube with a pencil sounds like a snare drum that's the issue. If it is a solid state amp my guesses would be room acoustics or at least one pickup needs re-potting.


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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 12:39 am
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Jim Breuer

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 6:18 am
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brotherdave wrote:
If it is a tube amp or a hybrid with a tube preamp, there's a chance the preamp tube is becoming microphonic and needs replacing. If gently flicking the side of the preamp tube with a pencil sounds like a snare drum that's the issue. If it is a solid state amp my guesses would be room acoustics or at least one pickup needs re-potting.


It is SS.

1991 Crate Excalibur GX900-H into a 1989 KMD GV412-S

Not sure if my pickups were ever potted, but the neck is a very early SD Invader (wound by Maricela Juarez, is actually a bridge)

and the bridge is only the previous owner's best guess, which was 80s MIJ.

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 9:08 am
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Buxom wrote:
Yea, I'm in the middle of it.

My Telecaser: It's good, alright. But it's weird.

My half stack: It's also good, but also weird.

They both have the strangest issue. If and only if the amp is sitting on a hardwood floor and the user is barefooted, will it squeel. What exactly is going on?

I realized this when a friend came over and we played. I drummed, and he played guitar. He actually wears shoes, and the amp was sitting on a rug at first. Then we repositioned it and I started playing it and it was all squeely.


Only partly serious here, but do you have any large metallic fillings in your teeth?

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 9:16 am
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Nah, I let em rot.

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 10:15 am
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Buxom wrote:
Nah, I let em rot.


I used to do that too...but now I don't have to :lol: But, back to the problem as posted.
So...Is it only when you play barefoot with the amp on the hardwood floor, or does the same thing happen with other barefoot guitarists?
Also, have you tried reversing the plug, or is it keyed such that it can go into the socket only one way? I'm thinking about capacitance/ground effects here. The teeth question was to do with an aerial effect, of course :wink:

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 12:07 pm
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Well, I most likely won't be the one dying from it, considering I usually drum now, but it would be nice for it to not squeel. it's a decent amp and I want to keep it. If it's something as simple as potting a pickup, I'll get it done.

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 12:33 pm
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May i suggest not playing barefoot :!: . But if you prefer to play barefoot, lay down a carpet and problem solved. :wink:

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Post subject: Re: Funny business.
Posted: Sun May 19, 2013 2:23 pm
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I'm sorry Bros, but, the thread is titled "funny business"

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