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Old 23rd April 2003, 05:00 AM   #1
diyAudio Member
 
Join Date: Sep 2002
Location: Sweden
Default Quad volume control?

I'm looking for a nice solution for a quadra volume control for my RPT3C project.

I recently took a look at the PassLabs solution used in the Alpha P 1.7 amplifier, but I would like to have more than 8 steps....

One way is to use a stepped attenuators...

Any idéas on this?

/JCh
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Old 23rd April 2003, 05:07 AM   #2
Freddie is offline Freddie  Sweden
diyAudio Member
 
Join Date: Oct 2000
Location: Sweden
Thumbs up 256 steps

The volume control used in Aleph P 1.7 has got 2^8 = 256 steps.
And the maximum attenuation is -48dB.

/Freddie
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Old 23rd April 2003, 05:14 AM   #3
diyAudio Member
 
Join Date: Sep 2002
Location: Sweden
Not to my self: Think before you post!

Ofcource you can close more that one relay at the time, and get more than 8 steps.....

(Maby I should sleep more often. )

But, still, is there any other constructions or is the PassLabs good enough?

/JCh
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