Thanks for the responses!
In the meantime I opened the old unit and tried it
again and of course it worked fine. I hesitated but finally put it back in
the case and it still works fine.
I'm happy it works, just a bit nervous because I
don't understand what happened, and whether it may happen again.
----- Original Message -----
Sent: Thursday, March 01, 2001 9:21
Subject: Re: EDP input/output gain &
I have a similar situation with a twist. I bought an EDP
from the first Gibson batch (group buy from Alto). I upgraded the RAM to
the max and it works fine. I bought a second Gibson EDP (the second
group buy from Alto) but this one is slightly different from the first
The newer one came with the maximum RAM - a nice feature.
The on/off switch is reversed - I can get used to that. But the
real anoying difference is the input/output gain is much different between the
two units. I can correct the gain problem by carefully adjusting the
knobs but it would be much nicer if the units were better
Thankfully, I have not noticed any distortion in either
From: "Fabio Katz"
Subject: EDP input/output gain
& distortion problems
Date: Thu, Mar 1, 2001, 3:15 PM
an Echoplex for more than 4 years, and I have recently bought a brand new
one to loop in stereo.
I upgraded the software in my old unit to Loop III
5.0 and both work together like a charm.
The only problem was the
difference in input/output gain between the two EDPs, so I did the mod on my
old one as explained in the FAQ
Now I can set the knobs in both units to almost the
same position for balanced stereo looping,
the old unit
after the mod sounds distorted, even before the LED goes
careful to replace the right resistors with the correct values. Only
difference is that I got 2%, not 1% resistors in
possible that the mod may not work correctly on some
could have gone wrong?
In order to undo the mod I need to buy new resistors (our cat hid
them), in that case I would need to confirm the values of the original
for your help!
Stick and Loops