500k pot for 1 meg

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mark enger
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500k pot for 1 meg

Post by mark enger »

Can i sub a 500k pot for a 1 meg if i put a 500k R to the outer lugs will this work? thanks mark
Firestorm
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Re: 500k pot for 1 meg

Post by Firestorm »

mark enger wrote:Can i sub a 500k pot for a 1 meg if i put a 500k R to the outer lugs will this work? thanks mark
What's the function of the pot?
mark enger
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Re: 500k pot for 1 meg

Post by mark enger »

volume, and tone.
bluesky636
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Re: 500k pot for 1 meg

Post by bluesky636 »

No.

When you turn the pot up, the following circuit will see 1M, but when you turn the pot down, the circuit will still see 500K instead of zero.
mark enger
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Re: 500k pot for 1 meg

Post by mark enger »

thanks
bluesky636
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Re: 500k pot for 1 meg

Post by bluesky636 »

That was an easy one. :D
printer2
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Re: 500k pot for 1 meg

Post by printer2 »

Really depends on the circuit but here is a tweed control.

[img:945:641]http://i406.photobucket.com/albums/pp14 ... f6a37f.jpg[/img]

The bass control is mostly out of the circuit, the treble is the tone control. The left trace is the 1M while the 500k is the right, at min and max.
bluesky636
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Re: 500k pot for 1 meg

Post by bluesky636 »

What does that have to do with the OP's question?
printer2
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Re: 500k pot for 1 meg

Post by printer2 »

bluesky636 wrote:What does that have to do with the OP's question?
Can i sub a 500k pot for a 1 meg if i put a 500k R to the outer lugs will this work? thanks mark
You can use a 500k in a Tweed tone control circuit but the turnover frequencies will be different. If that is acceptable to you everything is good. Otherwise you have to scale the capacitor values also. Good to know if you do not have the right pot value and want to use one you have. The adding a 500k resistor was already dealt with so I did not comment about that.

Did I give too much information? Sorry.
Tillydog
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Re: 500k pot for 1 meg

Post by Tillydog »

You could probably get away with 500k pot for a volume / gain control where 1meg is specified, too - depends on the circuit and how many compromises the OP is/was prepared to make.

(But this isn't the same as turning a 500k pot to a 1meg one by adding any resistors.)
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Structo
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Re: 500k pot for 1 meg

Post by Structo »

I don't really like making compromises when choosing components, especially on pots.

My advice is to get the specified pot and install it. :wink:
Tom

Don't let that smoke out!
printer2
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Re: 500k pot for 1 meg

Post by printer2 »

Tillydog wrote:You could probably get away with 500k pot for a volume / gain control where 1meg is specified, too - depends on the circuit and how many compromises the OP is/was prepared to make.

(But this isn't the same as turning a 500k pot to a 1meg one by adding any resistors.)
True. Mind you, as a volume control it might fly if you do not want maximum gain.
printer2
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Re: 500k pot for 1 meg

Post by printer2 »

Structo wrote:I don't really like making compromises when choosing components, especially on pots.

My advice is to get the specified pot and install it. :wink:
Every circuit is a compromise. The question is, can this give me what I want.
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briane
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Re: 500k pot for 1 meg

Post by briane »

I don't really like making compromises when choosing components, especially on pots.
thanks - yep sound different. pots are where quality can really be heard, as well as value.

local guitar/music store should have em walk in if your in a decent size town.
it really is a journey, and you just cant farm out the battle wounds
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