Alps RK40, linear or log? - diyAudio
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Old 31st March 2015, 04:23 PM   #1
rol is offline rol
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Join Date: Jun 2010
Default Alps RK40, linear or log?

So I just got this Alps RK40 pot off ebay. However, seller doesn't know whether it is log or linear. I wonder if anyone has experience with this specific pot? Here hoping it is a log one.

Thanks,
Rol
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Old 3rd April 2015, 12:37 PM   #2
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You can easily check with a multimeter - set to the ohms range, a linear pot will be just that - 'linear' - set to 12 o'clock - you will see about 50K ohms, set to 2 o'clock and 10 o'clock and the difference to the mid point will be about the same.
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Old 4th April 2015, 10:14 PM   #3
rayma is offline rayma  United States
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Quote:
Originally Posted by rol View Post
So I just got this Alps RK40 pot off ebay. However, seller doesn't know whether it is log or linear.
I wonder if anyone has experience with this specific pot? Here hoping it is a log one.
It is a log type for volume control use, also known as "black beauty." It also has a loudness tap.
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Old 7th April 2015, 03:41 AM   #4
rol is offline rol
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Quote:
Originally Posted by rayma View Post
It is a log type for volume control use, also known as "black beauty." It also has a loudness tap.
Great to hear it is a log type
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