Cgs synth

Hey all..

I'm building my CGS77 serge filter for my best of CGS BOG panel and i have a question in regards to one of the modifications listed on the project page:

"If you wish the filter to self oscillate at high Q settings, the 68k resistor between pins 2 and 6 of the single op-amp (LM748 on the PCB) can be reduced to 27k. This will also drop the output levels significantly. To recover the levels, feed the LP, BP and HP outputs through three of the onboard buffers, with 39k resistors used in positions marked RG."

Now this sounds like something i would like to do as part of my build, the problem I am having is locating these 68k resistor between pins 2 and 6 of the LM748 (substituted for LM071)
There are two 68k resistors surrounding this chip and neither seem to connect to both pins 2 and 6 as seen in the schematic.

I am using the rev 1.1 board as well

In the schematic there is a 68k resistor between pins 2 and 6 of the
748, which would be the exact same pinout as the TL071. (Where I
changed mine at.)

It be there. :) I had V1.... damn. I'll have to look at it and see
if I had 1.0. :o

With this, I also fed each of the 3 outputs to the buffers at the
other end of the board, not using the 4th one.

--
Take care,
Warmth and Peace,
Rich

http://www.damian.deathlehem.com/ - my modular synth
http://www.soundcloud.com/Richarius - my latest composition snippets
http://www.youtube.com/dolphinicus/ - various module videos of mine / etc.

I just noticed as well in the schematic ... quote:
"This schematic is correct for CGS77 VER1.2. Some labels differ for
VER1.1 but the circuit is otherwise identical."

That, could be the problem. :o The leg of the feedback 68k comes into
contact with pin 6 of the chip as well as the junction of the 330R to
HP Out and the next 68K, passing a 470R to Ground that feeds pin 3 of
the 1st CA3080.


--
Take care,
Warmth and Peace,
Rich

http://www.damian.deathlehem.com/ - my modular synth
http://www.soundcloud.com/Richarius - my latest composition snippets
http://www.youtube.com/dolphinicus/ - various module videos of mine / etc.

The 68k is physically between the 11M and the 330R.