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I just bought a Modulus 3A and of course there is not a manual and I wanted to adjust the jumpers to remove the capacitor out of the signal and was hoping to get some help with that. If any one can assist me with that I would greatly appreciate it.
If any one could email me with a phone number that would be great and walk me through it over the phone.
thanks
Don
Follow Ups:
Don, Please check the four single pole cap bypass switches behind V3 & V4 the M3A's line stage tubes. Switching these four switches to OFF removes the caps from the signal path. Also, contact our office to arrange an Owner's Manual. #925-463-2380
In your opinion audibleone, do you prefer the sound with the caps in or out of the circuit? I ask because I bought mine second hand and the previous owner had them out of the circuit. I never touched them. Would really appreciate hearing your opinion audibleone.
Bob
I throw my windows open wide and call to you across the sky.
Initally we installed the cap bypass switches to voice the preamp a little softer during the initial break-in process. After the break-in process turning the switches off tends to open-up the highs. However, many Modulus owners prefer to leave the switches on. It's really a matter of taste...
How does removing the Caps change the sound of the AIM3A? I love my preamp and if I can make it sound better I'd like to do so.
As explained in your Owner's Manual the preamps two line stage each have two single-pole cap bypass switches. Switching these four switches to OFF tends to open up/extend high frequency response. Suggest you check this out. Remember, the four switches must switched either On or OFF.
those caps are there for a reason - a good reason. Having tried it both ways of course
"Man is the only animal that blushes - or needs to" Mark Twain
I've got an AI Modulus 3. I think the same things apply to the AI M3A.
The AI is a pretty flexible preamp, since there are a few things you can do to alter the sound.
The caps (as mentioned) are one thing. Also, as the OP will see when the excellent manual gets sent out, there are two other things that operate in a somewhat similar fashion:
1- The Main outputs 1 and Main outputs 2 differ. Main output 2 controls "tube glare."
2- The CD and DAT inputs differ from the other line inputs. Supposedly something to do with problems stemming from cheap digital components.
Currently, I've got digital going into the DAT input, the caps OFF, and the output to the amp going through "main 2."
In my system, I find the caps don't make a ton of difference, nor does the choice between main 1 and main 2. BUT I like the CD and DAT inputs quite a bit better than the other line inputs. Less harsh. My digital is decent (Squeezebox V.3 going into a Musical Fidelity V-DAC) but...
difference to leave them in, I use output one mainly due to long interconnects. With the 6H23-EB tubes, glare is not a problem.
I may just have to try my digital into DAT
"Man is the only animal that blushes - or needs to" Mark Twain
I find the AI M3a stages better with the caps "in"... There is a more vivid sound with the caps "out", but the layering and the "Audible Illusion" tends to suffer a bit. Thus myself, preferring the Caps "in".
Seems like customer service at AI is stepping it up a notch. Good on ya!
Oz
Don't worry about avoiding temptation. As you grow older, it will avoid you.
- Winston Churchill
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