Condor Cab Sim help

Started by Ell, January 03, 2010, 10:14:37 PM

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Ell

Yep... another failure from me. I'm building the Condor Cab Sim from Torchy's layout. I've followed it exactly. Here are my numbers.

The sound that I'm getting is very distorted and I have to heavily boost the signal before the cab sim to get any noise going to my sound card. Perhaps a stupid question, but as this is a "cab sim" am I doing this wrong? At the moment I have my pedalboard going into the cab sim, which then goes into my pc. Should I have the cab sim running after an amp like the Ruby, then going into my pc?

Both IC's are JCR4558D's.

Left IC

1. 8.58
2. 8.58
3. 0.11
4. 0.00
5. 0.00
6. 8.58
7. 8.58
8. 9.18

Right IC

1. 8.58
2. 8.58
3. 8.23
4. 0.00
5. 8.22
6. 8.58
7. 8.58
8. 9.18


Here are the readings for the J201. Each of the results are from each extreme of the trimpot. I tried a few J201's but the sound is always more or less the same.

D. 9.18
S. 0.33
G. 0.00

to

D. 0.16
S. 0.09
G. 0.00

Slade

I think you could have a wrong capacitor value or the electrolytic reversed. Could you post some pictures of your PCB?

isildur100

Hi,

I have built the condor and it works good. However, for me, it only worked good if I plugged it at the line output of my amp and then the condor into my sound card (or mixer). Using it directly with a pedal made it distort. So I believe you are having the same problem.

John

compuwade

I have built the condor with great success. Ive used it connect to all of my amps, directly into the computer, and also into a mixer. All configurations sound great with any pedals plugged into it. So my guess is that you have a part wrong somewhere in the circuit. I would look at all of your resistors 1st. It's very common to mistake a certain value resistor for another one.

Good luck.


Andre

pins 1, 2, 3, 5, 6 and 7 of both IC's should measure around 4.5V so there must be something wrong with Vref.

I advice you to search in that direction.
Vref comes from the two 22k resistors in the lower left side of the schematic.