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Post subject: Noisy Volume pot
Posted: Thu May 02, 2019 2:49 pm
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I have a brand new Player Series Strat. and I’m new to ‘lectric guitar. I’ve been an acoustic player for the past 45 years. New to this but I understand the age old issue of 60 cycle hum with a single coil Strat. I just need to know if this issue I have is normal.
My volume pot has a normal amount of hum from 1 to about 7. It’s very loud after 7 to approx 9, them goes normal at 10. I’ve used contact cleaner spray in the pot but that didn’t do anything. The pot itself doesn’t have a dirty sound when turning but the 60 cycle hum is consistently noisy at the settings described above. Can anyone tell me if this is a bad pot or normal operating pot.


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 1:37 am
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As I understand what you write, volume pot don't make the noise, guitar does :lol:
Pot send you what guitar do !
It is not a bad pot

Short answer; try your guitar on another amp on another house.

Yo may have a bad ground your amp ( which amp ? )
Bad ground in house electrical wiring
Interference from a PC, cell phone, electrical motor, neon light ......


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 2:56 am
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Try another amp.

I have an amp that does exactly the same. Others are fine.

You will also learn "The dance of the hum dodger". Strats will produce more, or less, hum subject to where you are standing, your orientation to the amp, weather conditions, house wiring, location and 101 other unfathomable weird stuff. I'd put your present main hum issue down to the amp though.

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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 5:59 am
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Thanks for the info. I guess it confused me when the hum was quietest with volume cranked to 10 on the guitar. This saves me from the work of changing out the pot.
I use a Supro 1600 amp. I have a Vox AV30 that has not had the Strat plugged into yet.
I’ll plug it in today and see what happens.


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 6:11 am
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You understand now a pot is just a control for what the amp send.

Try guitar in other house too. It is not just a matter of amp as I wrote before.
Check for PC, cellphone....put them to off


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 10:20 am
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Normally you're not supposed to measure a pot while still in the circuit, won't give you a proper pot reading.

But I have checked , and I have noticed that the ohm value keeps rising till 9, then from 9 to 10 the ohm reading drops off.
Probably part of the L R C circuit.

But maybe you're actually hearing what the pot does normally just you have enough hum

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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 10:27 am
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Thanks Eraser_Team. I appreciate the tech info.


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 10:34 am
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as stratele52 said, most likely culprit (IMO) is the house wiring. If you have a good high-quality battery backup that isolates devices from the A/C, plugging the amp into it would help you rule that out. Otherwise, unfortunately you are stuck bringing the amp to a friends house to confirm/disprove the theory. Or just install all new electrical wiring in your house! :P


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Post subject: Re: Noisy Volume pot
Posted: Mon May 06, 2019 12:31 pm
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Ronhoof wrote:
I guess it confused me when the hum was quietest with volume cranked to 10 on the guitar.

That's an example of the "signal to noise ratio" in real life.


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