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Old 11th February 2011, 05:38 AM   #1
ditubo is offline ditubo  United States
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Default Stepped Attenuator for AI Modulus IIA

What would be the best affordable stepped attenuator to replace the volume pots (continuous type) on an Audible Illusions Modulus IIA and what other mods can I do to it? I will be receiving the preamp any time tomorrow (Friday Feb 11, 2011) and am very excited. I want to hear how it will sound compared to my for mer pre (Counterpoint SA 7.1). Also need to know which value for the pots, 50K or 100K. Thanks in advance.

Is it even worth the time to modify the volume pots?
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Old 11th February 2011, 09:45 AM   #2
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Why not just listen to the amp 'as-is' for a while, and then decide if it requires improvement and in which areas?
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Old 11th February 2011, 12:34 PM   #3
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Cheap volume pots can suffer from channel imbalance. I've had it happen with "Blue Alps" (note - could be counterfeit knockoffs), I've replaced it with a stepped attenuator and it did sound better. - better balance between channels and a 'smoother' volume grade.

But as mastodon noted, give it a listen before you modify.
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Old 11th February 2011, 01:36 PM   #4
DF96 is offline DF96  England
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Audible Illusions
What a wonderful name for audio equipment! Are they admitting that it is not what it seems?

I agree with the others. Listen to it before you start fiddling with it. Assuming, that is, that it was bought in order to listen to music rather than as a platform for bragging to friends.
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Old 11th February 2011, 05:31 PM   #5
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My friend from Israel shipped me some ladder attenuators. I can't think about anything better. He made for 10K, 50K, and 600 Ohm. PM me if you want more info.
The Devil is not so terrible as his math model is!
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Old 28th December 2011, 03:53 PM   #6
nsx51 is offline nsx51  United States
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ditubo, I also have a Modulus 11a, and am curious as to what you have done to yours. Did you change the volume pots? Anything else?
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Old 16th July 2013, 08:50 AM   #7
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Smile Stepped Attenuator forModulus 2B

I am very new here, in fact I just registered few hours ago. I came across this thread. I am experiencing channel imbalance with my AI M2B, I wish to ask ditubo, if you eventually replaced the volume pots with stepped attenuator and where did yu buy them? Thanks and am glad to a member of the community.
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