Help identifying an old kit (anti-pop / plop circuit)

Kits Audio Hi Fi Projects
1

Quite a few years back, I built a Velleman kit that provides a delay and protection against “pop” or “plop” from a home audio amp. It has been working great. However, when I built it, I used the same type of connectors for input and output. Now, after my system has been moved, I can’t tell which is which.

So, I opened the case, hoping the PCB was marked…it is, but isn’t clear enough which leads are which. Here’s a photo:

http://www.dropfiles.net//files/1227/velleman_kit.jpg

One connector uses the blue and white (and shared black) leads. The other uses the red and yellow (and shared black) leads. Which side is input or output?

Thanks!

2

You can download the manual of the K4700 kit here:http://www.velleman.be/downloads/0/illustrated/illustrated_assembly_manual_k4700_rev1.pdf

3

Perfect. Thanks very much, VEL417.

By the way, I think this kit is at least 10 years old, and has worked perfectly since new.