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Old 29th July 2009, 08:49 PM   #1
gychang is offline gychang  United States
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Default which volume-pot for amp D?

I see 2 major catergories linear/audio pot. Some have on-off switch built in.

which one is ideal for the usual t-amp clone?, alps is mentioned but price seem little high.

which one from here seem reasonable?

http://www.action-electronics.com/pots.htm

thanks,

gychang
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Old 29th July 2009, 09:29 PM   #2
luka is offline luka  Slovenia
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any? what is the big deal, its only a pot, nothing else
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Old 29th July 2009, 10:03 PM   #3
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Usually pots with built in on/off is much lower quality but if that is primary concern then an attunator, either with a rotating switch or a relay network is a much better solution.
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Old 29th July 2009, 10:09 PM   #4
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None of them seem suitable.. They are all mono.
You need a single turn, dual log, of a value between 10k to 100k.
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Old 29th July 2009, 10:35 PM   #5
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Quote:
Originally posted by audio1st
None of them seem suitable.. They are all mono.
You need a single turn, dual log, of a value between 10k to 100k.
Wouldn't a 10K only give a 1.5dB dampening with a standard 1:1 resistor network? I'd say at least 50K Ohm.
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Old 29th July 2009, 11:32 PM   #6
gychang is offline gychang  United States
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Quote:
Originally posted by audio1st
None of them seem suitable.. They are all mono.
You need a single turn, dual log, of a value between 10k to 100k.
I thought was strange only one row of 3 prongs...

thanks,

gychang
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Old 31st July 2009, 11:58 AM   #7
col is offline col  Australia
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search these forums for "jaycar pot".

col.
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Old 5th August 2009, 03:24 PM   #8
rhing is offline rhing  United States
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Default Bought this 50k SMD stepped attenuator on eBay

I bought a 50k log stepped attenuator from "tube_buyer" on eBay, and installed it on my Virtue Two Class D integrated amp. It has a nice solid feel and takes up very little space. It has the same footprint as a Noble or PEC pot. This little attenuator made a significant improvement in the sound quality over the stock volume pot in terms of transparency and improved frequency response. For $10 +$8 shipping, it was a great investment.
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Old 5th August 2009, 11:24 PM   #9
col is offline col  Australia
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Hi Rhing,

Quote:
I bought a 50k log stepped attenuator from "tube_buyer" on eBay, and installed it on my Virtue Two Class D integrated amp. It has a nice solid feel and takes up very little space. It has the same footprint as a Noble or PEC pot. This little attenuator made a significant improvement in the sound quality over the stock volume pot in terms of transparency and improved frequency response. For $10 +$8 shipping, it was a great investment.
That sounds quite interesting. Is it the same as this:

http://cgi.ebay.com.au/DACT-Type-21-...3286.m63.l1177

I could not find "tube_buyer".

cheers,
col.
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Old 5th August 2009, 11:52 PM   #10
rhing is offline rhing  United States
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Hi Col,

It looks like the same SMD stepped attenuator to me. These guys could be the same sellers under different names. Their ratings are identical.

Here's a link to tube-buyer's stepped attenuators and pots on eBay:

http://stores.shop.ebay.com/Parts-an...34Q2ec0Q2em322

I just soldered some stripped solid core hook-up wire segments to the pads on each PCB of the stepped attenuator to create pins for soldering to my Virtue Two's PCB thru-holes where the stock volume pot was connected.

No pops, static or any noises from my unit. It sounds great.
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