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Old 1st September 2004, 09:36 PM   #1
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Default Panasonic pots for sale

I have 3 of those well regarded Panasonic pots: 10K, 50K and 100k, logarythmic.

10k and 50K are not used and I'm asking $30/ ea.

100K has been removed from an amp and the shaft is slightly trimmed (a bit shorter than normally); I'm asking $20 for this one.

Shipping is $6 (any location).
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Old 2nd September 2004, 09:49 PM   #2
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What's the best match for one of Brian's GC Kits?
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Old 2nd September 2004, 09:52 PM   #3
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Probably 50K.

Optimally, I would prefer 25K, but this pot is not available in that value.

With Brian's kit you already have 22k resistor shunting to ground. What I like to do is add another 22k Caddock in parallel with IN/OUT resistance of the pot. This cleans up the sound of the pot a bit, provides better tracking and lowers the series resistance.

I tried this method with another pot and it works great.

BTW, the 50k pot has very good matching between channels.
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Old 2nd September 2004, 10:08 PM   #4
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As I know, input impedance of GC is app. 20 k Ohm, so for correct volume curve must be used pot with lower resistance, max. 5 k Ohm, not 50 K Ohm. Also thermal noise of this value is bigger.
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Old 2nd September 2004, 10:11 PM   #5
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So either GC is a special amp, or the pots I'm using are special, as 50k works perfectly well.

Why don't you try one?
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Old 2nd September 2004, 10:16 PM   #6
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Quote:
Originally posted by Upupa Epops
As I know, input impedance of GC is app. 20 k Ohm, so for correct volume curve must be used pot with lower resistance, max. 5 k Ohm, not 50 K Ohm. Also thermal noise of this value is bigger.
If you use 5k pot with 20k ohm input on the amp, the amp doesn't have 20k ohm input resistance anymore, isn't it? I prefer to keep it closer to 20k ohm though, as my DAC has pretty high output resistance.
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Old 2nd September 2004, 10:36 PM   #7
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I'm using for connection between machines ultralow impedance ( 50 Ohm ) and my preamps give full output to this load, 'cos it is the best solution ( hum, noise, RF immunity and ( ! ) best sound ). Try it and you will give me thruth, I mean it quite seriously . In this case is not value of pot interesting.
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Old 3rd September 2004, 08:57 AM   #8
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Hi Peter,
What camera did you use to take the pic of the pot ?
( manual focus?)
Its really sharp and clean.
Thanks.
Ashok.
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Old 3rd September 2004, 01:52 PM   #9
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I used Olympus C4040 digicam (4 Meg) in auto focus mode.

The sharpness is usualy improved by using correct light.
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Old 3rd September 2004, 02:38 PM   #10
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Thanks Peter.
You are right , lighting is very important.
Nice pic.
Ashok.
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