Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Stepped Attenuator for AI Modulus IIA
Stepped Attenuator for AI Modulus IIA
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 11th February 2011, 05:38 AM   #1
ditubo is offline ditubo  United States
diyAudio Member
Join Date: Sep 2010
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?
  Reply With Quote
Old 11th February 2011, 09:45 AM   #2
mastodon is offline mastodon  Netherlands
diyAudio Member
mastodon's Avatar
Join Date: Jan 2011
Why not just listen to the amp 'as-is' for a while, and then decide if it requires improvement and in which areas?
  Reply With Quote
Old 11th February 2011, 12:34 PM   #3
kstagger is offline kstagger  United States
diyAudio Member
kstagger's Avatar
Join Date: Dec 2003
Location: Grand Rapids
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.
  Reply With Quote
Old 11th February 2011, 01:36 PM   #4
DF96 is offline DF96  England
diyAudio Member
Join Date: May 2007
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.
  Reply With Quote
Old 11th February 2011, 05:31 PM   #5
Wavebourn is offline Wavebourn  United States
Designer & Technologist
diyAudio Member
Wavebourn's Avatar
Join Date: Sep 2006
Location: Pleasant Hill, CA
Stepped Attenuator for AI Modulus IIA
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!
  Reply With Quote
Old 28th December 2011, 03:53 PM   #6
nsx51 is offline nsx51  United States
diyAudio Member
Join Date: Dec 2011
Location: Oak Ridge, TN
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?
  Reply With Quote
Old 16th July 2013, 08:50 AM   #7
ponggoy is offline ponggoy
diyAudio Member
Join Date: Jul 2013
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.
  Reply With Quote


Stepped Attenuator for AI Modulus IIAHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300 infotrad Tubes / Valves 0 3rd July 2007 08:07 PM
stepped attenuator ivegotmono Tubes / Valves 4 7th January 2006 02:49 PM
Stepped attenuator Bas Horneman Tubes / Valves 24 16th June 2004 07:18 AM
Stepped Attenuator officeboy Parts 3 6th May 2004 03:32 PM

New To Site? Need Help?

All times are GMT. The time now is 05:56 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio