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[mg73]

I HAVE AN OLD QUAD EIGHT CONSOLE WHICH HAVE
QUAD PAN POTS AND THE ARE GETTIN OLD AND SCRATCHY.

I´M  REPLACING THEM WITH JUST A STEREO PAN.
I THINKING OF USING THE TWO HOUSE POT PAN DESIGN
BUT I´M NOT SURE WHICH VALUE IT SHOULD HAVE.

ANY IDEAS OF HOW CONSTRUCTING THIS(RESISTORS?POT? E.T.C.)
YOU CAN SEE THE ORIGINAL SCHEMO BELOW.

[ssltech]

Use a 1500Ω linear pot, and completely omit the connections to the two 5kΩ gangs.

It will give you two sets of full-level stereo buses, left & right front being one and left & right rear being the other.

Keith

[mg73]

Hi

Thanks for the answer,
Good idea to keep the rear channel as an extra stereo buss
I will sum that also to the stereo mix and it can be used as parallel line for fx,comp e.t.c. when mixing

Should I use just a single pot or should I go with a dual ganged pot for less attentuation?
I saw this NYdave pan schemo and it has 6db less att. than the single pot but I´m not sure which values to use.

[ssltech]

Depends ENTIRELY on the following circuit.

Actually, NewYorkDave's circuit provides (~6dB) MORE attenuation than the other... but the other used to cut by 6dB in the Quad section, which we'd now be bypassing, so it'd be a wash...

You'd have to do some math for the NewYorkDave version, and unless you wanted to do quite a bit of trial and error to make sure that it worked with the following electronics (virtual earth summing amps will behave VERY differently from other topologies) then I'd recommend just doing what I suggested.

Keith

[mg73]

The following circuit are  the CN-28 summing amp it´s a 28 input with 10kΩ resistor input  followed by two AM4 opamps in series.

Any good source for getting potentiometers?
Would it work with a pot with middle click or could it be a bit of when a want it in the middle.