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Old 11th April 2006, 11:55 AM   #1
gy21 is offline gy21  Netherlands
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Default replacing NAD 1300 volume/Balance pot

Does anyone know how to replace the NAD 1300 volume/Balance pot. It is a combined pot, wich conbalance and volume.

Hepl would greatly be appriciated.
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Old 28th June 2006, 09:27 PM   #2
vaughst is offline vaughst  United Kingdom
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Hi I would also be interested in this, trying to rebuild one as a restoration/upgrade project.

Have you a manual and/or schematic?

Regards
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Old 20th August 2006, 07:37 AM   #3
sletol is offline sletol  Norway
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I used a standard ALPS potentiometer. Since it does not fit the usual way, I simply glued it with epoxy to the inner side of the cabinet together with a piece of hardwood. I was only glad to get rid of the balance potentiometer, I have never used them.

The picture suggests some other changes, as you can see. The only active circuit in use in the amp is the opa627. This simplification has allowed me to throw out, or shorten, most caps and switches in the signal path. (I have lowered the supply voltage to the opa somewhat).

Everything has worked to my complete satisfaction for a couple of years
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Old 2nd July 2007, 09:56 AM   #4
gy21 is offline gy21  Netherlands
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Wich value alps pot did you use?
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Old 2nd July 2007, 02:59 PM   #5
gy21 is offline gy21  Netherlands
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Click the image to open in full size.

can i anyone help me out wich is the value for balance and wich is for volume?
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Old 28th August 2007, 08:00 AM   #6
gy21 is offline gy21  Netherlands
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Thanks Sletol for posting your picture of your mod. From that picture I coould extract what you did and do it myself. It's a great mod!

Click the image to open in full size.
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Old 3rd October 2008, 10:21 PM   #7
sletol is offline sletol  Norway
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sorry gy21 for answering your question about the potm size this late ( You already figured out that the size is not critical, of course), but I believe I used 50k.

I am happy (and somewhat surprised) that you could make use of the photo for the other mods!

Cheers, O.S.
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