100R trimpots - best brand for audio

lordearl · 18th July 2010, 01:34 PM

These are to be used on a discrete buffer for nulling DC offset, any suggestions as to which brands are reliable?

bob91343 · 18th July 2010, 04:13 PM

It's hard to find bad parts these days. Anything that will fit will do the job.

nigelwright7557 · 18th July 2010, 09:52 PM

I always use enclosed type to keep the dust out.

tiefbassuebertr · 18th July 2010, 11:17 PM

Quote:

Originally Posted by bob91343

It's hard to find bad parts these days. Anything that will fit will do the job.

I would rather say "It's hard to find good parts in these days"

Quote:

Originally Posted by lordearl

These are to be used on a discrete buffer for nulling DC offset, any suggestions as to which brands are reliable?

the follow versions offers good quality:
http://www.bourns.com/ProductLine.as...litary_quality

AKSA · 19th July 2010, 12:28 AM

Bourns 3296W, three wire, in line, vertical 25T adjust.

Don't use the Chinese knockoffs, often they do not engage with the adusting screw.

Hugh

Sunsun22 · 19th July 2010, 02:06 AM

If you have spare money, use any of these

http://www.texascomponents.com/pdf/vpot.pdf

I changed to use (10R) 1260 on my Erno's 320 phono preamp and it produces more details VS the stock supply which is already a good one from Japan. Adjusting the zero offset is a piece of cake since the voltage does not go up and down with small turn. The price could be a concern because it is over $30 each but you can also consider a cheaper alternative such as 1280 if your PCB allows.

mach1 · 19th July 2010, 02:18 AM

Bourns cermet 10 turn are well made, reliable and reasonably priced.

lordearl · 19th July 2010, 03:17 AM

Excellent, thanks! Might try the Bourns as they seem good value for money.

tiefbassuebertr · 07:01 AM

Quote:

Originally Posted by Sunsun22

If you have spare money, use any of these
http://www.texascomponents.com/pdf/vpot.pdf

Thank you for this advice. Also a wide range of their other devices about
http://www.texascomponents.com/
are of interest, e. g.
http://www.texascomponents.com/pdf/tx221.pdf
and
http://www.texascomponents.com/pdf/zseries.pdf

lordearl · 19th July 2010, 08:06 AM

Sheesh, looks like it is possible to spend some big bucks on small components!

While we're on that topic, what is an audio grade DPDT switch to use for toggling between two inputs?

18th July 2010, 01:34 PM	#1
lordearl diyAudio Member Join Date: Jun 2007	100R trimpots - best brand for audio These are to be used on a discrete buffer for nulling DC offset, any suggestions as to which brands are reliable?

18th July 2010, 09:52 PM	#3
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	I always use enclosed type to keep the dust out. __________________ http://www.murtonpikesystems.co.uk PCBCAD50 pcb design software.

19th July 2010, 12:28 AM	#5
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	Bourns 3296W, three wire, in line, vertical 25T adjust. Don't use the Chinese knockoffs, often they do not engage with the adusting screw. Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

19th July 2010, 02:18 AM	#7
mach1 diyAudio Member Join Date: Sep 2004 Location: Brisvegas	Bourns cermet 10 turn are well made, reliable and reasonably priced. __________________ Au rutti wop-bop-a-loom-bop-a-boom-bam-boom - Richard Penniman

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18th July 2010, 04:13 PM	#2
bob91343 diyAudio Member Join Date: Mar 2010	It's hard to find bad parts these days. Anything that will fit will do the job.

19th July 2010, 02:06 AM	#6
Sunsun22 diyAudio Member Join Date: Jul 2004 Location: Hong Kong	If you have spare money, use any of these http://www.texascomponents.com/pdf/vpot.pdf I changed to use (10R) 1260 on my Erno's 320 phono preamp and it produces more details VS the stock supply which is already a good one from Japan. Adjusting the zero offset is a piece of cake since the voltage does not go up and down with small turn. The price could be a concern because it is over $30 each but you can also consider a cheaper alternative such as 1280 if your PCB allows.

19th July 2010, 03:17 AM	#8
lordearl diyAudio Member Join Date: Jun 2007	Excellent, thanks! Might try the Bourns as they seem good value for money.

19th July 2010, 08:06 AM	#10
lordearl diyAudio Member Join Date: Jun 2007	Sheesh, looks like it is possible to spend some big bucks on small components! While we're on that topic, what is an audio grade DPDT switch to use for toggling between two inputs?

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