Recent Posts

Pages: [1] 2 3 ... 10

4K,6K,8K Series / Re: I've recreated the SL613 Test jig!

« Last post by mike_signo on Today at 03:18:21 AM »

Thank you!!
This will save me a lot of time!
I'll proceed immediately with redoing it in Kicad and printing a board for it!

4K,6K,8K Series / Re: I've recreated the SL613 Test jig!

« Last post by Chris Simon on April 25, 2024, 10:00:48 PM »

Sorry, should have sent this schematic, too.

4K,6K,8K Series / Re: Adding Ultimation faders from different desks

« Last post by brewery on April 25, 2024, 12:57:10 PM »

Quote from: seedubs on March 07, 2024, 06:39:58 PM

I have at least 2 different kinds of touch pcb's in this console. The blue potted ones and the green non potted ones. They work fine together mixing daily with the Tangerine auto .I believe the console the additional 56 faders were taken from were of the same vintage (4056 G. No 9k stuff here.

Those 2 are the same circuit, I think the older (blue) ones were oem from p&g. The latest ones with the vari cap are not compatible. The pcb is also bigger.

4K,6K,8K Series / Re: I've recreated the SL613 Test jig!

« Last post by mike_signo on April 25, 2024, 04:28:45 AM »

Thanks Everyone!!!
The small amount of components present on the 354 test jig (Thanks Chris for linking that thread!) makes me optimistic that It should'n be too difficult to recreate.
Looks very simplified compared to VCA fader itself.

I can see two of the same power connectors used for the SL613 Jig, they are likely linked to together just to make it easier to use the 613 and the 354 with a single psu.
There's the IDC connector with presumably goes to the VCA card on the channel itself.
They used a rotary switch with discrete steps instead of a pot for the fader, there are 5 blue burns trimmer which I presume are used to finetune the individual attenuation levels of the rotary switch (fader).
The Vca switches this fader in an out compared to a fixed value (photo is quite blurry but I looks like it says +10dB).
I don't know how the total recall swtich is implemented, I'll check my documentation to find out!

I'm very excited to get it working!
All the best!
Michele