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Old 18th January 2011, 03:59 AM   #1
maurycy is offline maurycy  United States
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Default What volume pot for Arjen's TA2024

I have one of the earlier TA2024 boards that I have purchased from Arjen. I am trying to put together a small amp for my kids room. What would be the best volume pot value for this amp?

I have tried it with Alps 09 50kax2 pot and it looks like it is not a good match. Volume works ok for about half the scale and then the other half doesn't produce any significant volume increase.

Thanks.
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Old 18th January 2011, 09:06 PM   #2
maurycy is offline maurycy  United States
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Anyone?
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Old 18th January 2011, 09:24 PM   #3
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Quote:
Originally Posted by maurycy View Post
I have tried it with Alps 09 50kax2 pot and it looks like it is not a good match. Volume works ok for about half the scale and then the other half doesn't produce any significant volume increase.
Thanks.
Volume pot is not for increasing volume. Its for attenuation.

Use 25k pot instead of 50k. Then you can twist volume knob
twice as much to get the maximum volume!
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Old 19th January 2011, 10:09 AM   #4
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how did you connect the pot?
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Old 19th January 2011, 01:26 PM   #5
maurycy is offline maurycy  United States
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Originally Posted by egberttheone View Post
how did you connect the pot?
Not sure if that's what you are asking but the RCA went to the pot and from pot, I have connected wires to the amp PCB.

I just got e-mail from Arjen which stated that 50K or 100K pot should work but it has to be B type. I guess that means linear, correct?
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Old 19th January 2011, 03:08 PM   #6
saudiof is offline saudiof  United States
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Quote:
Originally Posted by maurycy View Post
Not sure if that's what you are asking but the RCA went to the pot and from pot, I have connected wires to the amp PCB.

I just got e-mail from Arjen which stated that 50K or 100K pot should work but it has to be B type. I guess that means linear, correct?
I thought the Alps pots that Arjen ships were 50KAX2 which means they are logarithmic.
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Old 19th January 2011, 03:31 PM   #7
maurycy is offline maurycy  United States
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That's what I have used: Alps 50kax2 but like I stated, it didn't look like it was working properly throughout the whole scale. Will try now linear pot (just got to buy one).
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Old 19th January 2011, 09:17 PM   #8
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You will need a logarithmic potentiometer. This is because or ears work in a similar fasion. you need to connect the potentiometer as follow: Click the image to open in full size.
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