1

CP5176 FET compressor / JMP 1

« on: July 06, 2022, 07:34:27 PM »

Hi,
After soldering JMP 1 on stage 11 of the build, solder one and then check it's vertical then solder the other pins....
Do we trim those pins afterwards?

2

SK25/SK99 Discrete Op-Amp / The glue on Diodes D5 & D6....

« on: July 01, 2022, 07:52:21 PM »

When it says to put some instant glue on diodes D5 & D6, is that like any kind of glue? I've got some Gorilla glue around here somewhere...
Or does it have to be special thermal glue or something?

3

LA502 Optical Compressor / 1vac on output

« on: April 22, 2022, 06:57:34 PM »

OK, having setup issues.
I'm worried I'm misunderstanding some basic stuff.

First, the potentiometers never stop turning. No matter how many times i turn they can always turn some more. P3 & P4 click after a while but never stop turning. P5 doesn't click and can be turned continuously.

Test point 0V and V+ 15.75v
Test point 0V and V- -16v


input transformer 
1&5 = 2.21ohm
6&10 = 1.81ohm

output transformer 
1&3 = 4.8ohm
6&8 = 5.4ohm
9&12 = 11.5ohm
13&16 = 11.5ohm


I've got Logic as a DAW and a Cranborne R8 as a rack and interface. Worried I'm doing something wrong so if there's anyone else with a similar set up please feel free to advise me!
I've put the extender in slot 1. There are some other units in but I presume that's ok as I'm using the extender.
I've put a sine wave on a Logic channel and set the I/O to 1 on input and output.
The sine can be heard through the speakers. I then connect an XLR lead to the module output on the back on the R8
and tried to get an AC measure against pins 2&3. In fact any pins. Nothing. Then I thought maybe the speaker lead so I disconnected that and measured it. Nothing. Get a reading with one pin but nothing with two.