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  #21  
Old 6th March 2014, 01:48 AM
bikerhifinut bikerhifinut is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by colin.hepburn View Post
HI All
Well went and got a 50k single pot for balance control experiment for the WAD CF Pre
So knocked up a test prototype Board
Using 10/15k in Series got 24.5k
Pot set at mid point gives
L. Channel 23.2k R channel 22.7k ish
So now, circuit checks out ok fitting the pot to WAD CF I then notes that the CF Alps volume pot is a 50k not a 100k like I thought bugger
Give it a go anyway Colin. You'll at least get an idea if its going to solve your balance issue.

Andy.
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  #22  
Old 6th March 2014, 02:17 AM
colin.hepburn colin.hepburn is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by bikerhifinut View Post
Give it a go anyway Colin. You'll at least get an idea if its going to solve your balance issue.

Andy.
Will it still work
i thought the single liner pot had to be about half the log volume pot value so lin pot at 25k and log 50k
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  #23  
Old 6th March 2014, 11:00 AM
bikerhifinut bikerhifinut is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by colin.hepburn View Post
Will it still work
i thought the single liner pot had to be about half the log volume pot value so lin pot at 25k and log 50k
I'd give it a go anyway. But thats me.

I'm on the cusp of cannibalising an old valve integrated that has an array of Japanese Noble concentric pots. I think the log volume pot is 250k. You'd be welcome to it but I can't vouch for its quality sound wise.

Andy.

Last edited by bikerhifinut; 6th March 2014 at 11:11 AM.
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  #24  
Old 6th March 2014, 04:35 PM
colin.hepburn colin.hepburn is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by bikerhifinut View Post
I'd give it a go anyway. But thats me.

I'm on the cusp of cannibalising an old valve integrated that has an array of Japanese Noble concentric pots. I think the log volume pot is 250k. You'd be welcome to it but I can't vouch for its quality sound wise.

Andy.
Hi Andy
Thanks for the offer of the 250k pot But itís a 50k concentric I need just want to try this single pot method first as it would suite the idea of a stepped ladder pot if I go that way or just use a shunt pot
PS anyone know what type of screw is in the WAD volume Knob or is it a Allan key canít see in the wee hole
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  #25  
Old 6th March 2014, 04:56 PM
bob orbell bob orbell is online now
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Default Re: Balance pot for WAD CF Pre

Hi Colin, you need a 1.5mm allen key, the grub screw is 3mm. BOB
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  #26  
Old 6th March 2014, 05:04 PM
colin.hepburn colin.hepburn is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by bob orbell View Post
Hi Colin, you need a 1.5mm Allen key, the grub screw is 3mm. BOB
Thanks BOB
Thought it would be an Allan key now where are they
a 100 lines i need to be more organised
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  #27  
Old 6th March 2014, 08:38 PM
colin.hepburn colin.hepburn is offline
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Default Re: Balance pot for WAD CF Pre

Could I change the 50K Alps volume pot and replace with a 100k without losing too much gain?
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  #28  
Old 6th March 2014, 09:07 PM
bob orbell bob orbell is online now
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Default Re: Balance pot for WAD CF Pre

It will make very little difference at all Colin, in fact I doubt you will notice it. If you can't find an Allen key, give me a shout, and I will put one in the post. BOB
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  #29  
Old 7th March 2014, 12:14 AM
colin.hepburn colin.hepburn is offline
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Default Re: Balance pot for WAD CF Pre

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Originally Posted by bob orbell View Post
It will make very little difference at all Colin, in fact I doubt you will notice it. If you can't find an Allen key, give me a shout, and I will put one in the post. BOB
Jumps for joy it works
So replaced sorry lashed up the 100k with the 50k single balance pot gain seem unaffected
But seems to sound a bit thinner in the mid to top regions but this could be my ears or maybe its the SS Nad Amp i am using to test with will have to live with it and see before fixing it in proper
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Last edited by colin.hepburn; 7th March 2014 at 12:21 AM. Reason: Added Text
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