Audiosector kit: adding a pot

alleycat · 30th November 2006, 04:43 AM

I'm a bit confused about how a pot is actually wired up to the audiosector kit. According to Brian's userguide, the pot's wiper simply goes to "IN" on the board. So do the other resistors (220R, 20K) still remain on the input? This is different to National's schematic which shows just a 10K pot and 1K resistor.

Also, I've got the choice of either a log 10K or a log 50K pot. Which would be a better choice? My inputs will only be computer soundcard, USB DAC, or iPod.

Thanks.

Nordic · 30th November 2006, 04:53 AM

Someone is going to tell you to use the search function any minute now.

source connects on the side of the pot to which you turn the pot for full volume. middle pin goes to amp, other pin is for input...

10K is fine.

Bob0513 · 30th November 2006, 05:15 AM

audio input goes on to one end, wiper to amp in, other pin to ground. 10k or 50k will both work.

Peter Daniel · 30th November 2006, 06:56 AM

The pot connects to IN and SG on the board, don't worry about other components there, they stay where they are.

You can use either of the pots you have, I would probably go with 50K.

Attached is a pot connection diagram.

Don't use a search function, it's a waste of time.

alleycat · 30th November 2006, 10:54 AM

I was expecting some flak about using the search, because having used it I know there are a lot of posts about gainclone pots. Unfortunately I couldn't find a definitive answer to the specific questions I've raised.

Thanks to everyone for your help with this, especially Peter. I'm sure I won't be the only one to benefit from these informative replies.

CarlosT · 30th November 2006, 03:28 PM

I think that it was Peter also that had a tremendous comparo of different pots...I wound up buying some carbon Precision pots based on his work. Thanks, Peter.

CarlosT · 1st December 2006, 03:03 PM

Although the title is not totally fitting, this guide was pretty good

http://www.tocos.com/guideline%20and%20precautions.pdf

So for a simple three-terminal, single pot, Terminal 3 is signal input, Terminal 2 (the wiper) goes to the amp's input and Terminal 1 goes to ground?

CarlosT · 1st December 2006, 03:13 PM

Does Terminal 1 have to go to ground?

troystg · 1st December 2006, 03:30 PM

Quote:

Originally posted by Peter Daniel
The pot connects to IN and SG on the board, don't worry about other components there, they stay where they are.
........

I hate to ask but what are pins 1 and 5 for? I have the same Noble pot and really do like it but I have always been curious what the extra pins were for.

Peter Daniel · 1st December 2006, 03:41 PM

Quote:

Originally posted by CarlosT
Does Terminal 1 have to go to ground?

Yes

Quote:

Originally posted by troystg
I hate to ask but what are pins 1 and 5 for? I have the same Noble pot and really do like it but I have always been curious what the extra pins were for.

On the pots I had those pins were not connected. But maybe in some versions they are used for 'loudness' control.

30th November 2006, 04:43 AM	#1
alleycat diyAudio Member Join Date: May 2005 Location: Melbourne	Audiosector kit: adding a pot I'm a bit confused about how a pot is actually wired up to the audiosector kit. According to Brian's userguide, the pot's wiper simply goes to "IN" on the board. So do the other resistors (220R, 20K) still remain on the input? This is different to National's schematic which shows just a 10K pot and 1K resistor. Also, I've got the choice of either a log 10K or a log 50K pot. Which would be a better choice? My inputs will only be computer soundcard, USB DAC, or iPod. Thanks.

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30th November 2006, 04:53 AM	#2
Nordic diyAudio Member Join Date: Sep 2005	Someone is going to tell you to use the search function any minute now. source connects on the side of the pot to which you turn the pot for full volume. middle pin goes to amp, other pin is for input... 10K is fine.

30th November 2006, 05:15 AM	#3
Bob0513 diyAudio Member Join Date: Feb 2006 Location: home	audio input goes on to one end, wiper to amp in, other pin to ground. 10k or 50k will both work.

30th November 2006, 10:54 AM	#5
alleycat diyAudio Member Join Date: May 2005 Location: Melbourne	I was expecting some flak about using the search, because having used it I know there are a lot of posts about gainclone pots. Unfortunately I couldn't find a definitive answer to the specific questions I've raised. Thanks to everyone for your help with this, especially Peter. I'm sure I won't be the only one to benefit from these informative replies.

30th November 2006, 03:28 PM	#6
CarlosT diyAudio Member Join Date: Oct 2006	I think that it was Peter also that had a tremendous comparo of different pots...I wound up buying some carbon Precision pots based on his work. Thanks, Peter.

1st December 2006, 03:03 PM	#7
CarlosT diyAudio Member Join Date: Oct 2006	Although the title is not totally fitting, this guide was pretty good http://www.tocos.com/guideline%20and%20precautions.pdf So for a simple three-terminal, single pot, Terminal 3 is signal input, Terminal 2 (the wiper) goes to the amp's input and Terminal 1 goes to ground?

1st December 2006, 03:13 PM	#8
CarlosT diyAudio Member Join Date: Oct 2006	Does Terminal 1 have to go to ground?

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