1

LA502 Optical Compressor / Re: RLY1: Solder all pins?

« on: April 24, 2022, 07:31:18 PM »

Those two pins are just for stability. Solder the remaining 6 and you’re good to go. 

2

CP5176 FET compressor / Re: Need help with setup

« on: April 01, 2022, 08:07:16 PM »

I soldered the proper resistor in place and the LED’s are lighting up properly. The module is up and running!
Again, thank you for your help and insight!

3

CP5176 FET compressor / Re: Need help with setup

« on: April 01, 2022, 05:10:44 PM »

Thank you for your patience with this 
I’ll do those checks but I may have found the issue: there was a 10K in place of a 120R resistor on the GR board. I’ll do those tests you mentioned as well as place the resistor in the proper spot. 

4

CP5176 FET compressor / Re: Need help with setup

« on: March 31, 2022, 10:50:47 PM »

As soon as I take the second jumper off, there’s no led response with or without the compressor engaged. Only those 4 LED’s light up when the second jumper is in place

5

CP5176 FET compressor / Re: Need help with setup

« on: March 30, 2022, 03:10:34 PM »

I’m also getting D1-D4 LED’s constantly on with the second jumper in place and no changes when adjusting P7. Any ideas what this could be?

6

CP5176 FET compressor / Re: Need help with setup

« on: March 30, 2022, 02:32:54 PM »

I used another DOA from my EQ and that fixed the problem. Are there any specific things I should check on the SK25 or would ordering a new one be the way to go? 

7

CP5176 FET compressor / Re: Need help with setup

« on: March 29, 2022, 10:43:19 PM »

Ok I’ll test the DOA and check back. Thanks

8

CP5176 FET compressor / Need help with setup

« on: March 28, 2022, 07:25:18 AM »

I’ve gotten to the setup stage and I have a few questions:

I have a single mono module; are steps 7 and 8 necessary? 
Also, does the compressor need to be engaged at this step? Without it on, I can get to the 13.5VAC needed. With it on, the highest reading I’ve been able to get is 1.550VAC. 
I did the DC test, everything checks out within 10%. 
AC sidechain tests gave me these results:

AC level on TP3:

• Ratio 2 : 0.65 VAC   Vs. 0.79
• Ratio 4 : 1.3 VAC     Vs.  1.56
• Ratio 8 : 2.1 VAC     Vs.  14.47
• Ratio 12 : 3.4 VAC   Vs.   4.11
• Ratio 20 : 5.9  VAC  Vs.   7.06
• Ratio SLAM : 6.6 VAC   Vs.  7.06

Help! [/list]

9

CP4500 Stereo Bus Compressor / Re: Output issues

« on: March 21, 2022, 12:20:50 PM »

When the compressor is not engaged, it sits at zero but when it is engaged, the meter moves up a little. 

10

CP4500 Stereo Bus Compressor / Re: Output issues

« on: March 21, 2022, 04:12:43 AM »

I’ve tried calibrating a couple of times and at Step 7, I can’t get the VU to read zero no matter how much I turn the output trimmer down. Any idea what I should be looking for? 

11

LA502 Optical Compressor / Re: VAC output reads 0

« on: March 20, 2022, 03:53:30 AM »

After reflowing the components, I was able to get a proper reading. LA502 is up and running, properly calibrated. Thanks!!

12

CP4500 Stereo Bus Compressor / Re: Output issues

« on: March 20, 2022, 03:52:07 AM »

I reflowed the components and got a proper reading. My CP4500 is calibrated! Thanks for your help!

13

LA502 Optical Compressor / Re: VAC output reads 0

« on: March 19, 2022, 07:37:41 PM »

I’ll try these tests out today. Thanks 

14

CP4500 Stereo Bus Compressor / Re: Output issues

« on: March 19, 2022, 06:20:45 PM »

Ok I’ll try those out. 

15

LA502 Optical Compressor / VAC output reads 0

« on: March 18, 2022, 06:19:51 PM »

Hi it's me again. I'm having similar VAC output reading issues with my 502 as well; very low (around .130VAC) readings. I'm starting to think there may be a bad IC somewhere. Any help is always appreciated!

16

CP4500 Stereo Bus Compressor / Re: Output issues

« on: March 18, 2022, 06:16:14 PM »

I located the test points and with ONLY the red probe on TP2, the highest i got was .147VAC. The other images show my mixer audio cranked all the way up (with a 1K sine going through it) and the red probe on TP2. As soon as i touched the black probe on 0V, the reading drops to zero. 

17

CP4500 Stereo Bus Compressor / Output issues

« on: March 16, 2022, 07:34:05 PM »

Hello!

I’m having some problems getting my Multimeter to read 2.0VAC. I’ve used my DAW output and the sine tones provided in the Downloads section, tried using an outboard mixer, and reflowed the output sections on the PCB; no matter what I get a reading of 0.033.
I am stumped at this point and could really use some help. I’m not well versed in using a multimeter either so I could use some guidance as well. 
Thanks!