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[MikeHarris]

ADM made another variant using a rotary pot turned by a spun strip of metal which was turned by rollers following fader knob..
we supplied API 440 faders for Cameron Sounds custom ZZ Top API based touring console...which i was told was used to record Spirit weeks before Randy Califormia's passing

[Ike Zimbel]

I think the fader actually slid the pot on a track and gear on the pot shaft was mated to toothed solid
gear track.

I think you're right! I just had a few modules through the shop a few months ago...or maybe it was longer ago than that...pandemic time
And, yeah, one of the modules was missing a bushing that held the pot against the track so it was slipping.

[Don T. Williams]

Woody and Ike.  Not only did the Unisync Trooper consoles have sliders, they had them everywhere - four band fixed eq, aux sends and returns.  As I remember the monitor console had a "main" version (8 in/4 out or maybe 8 in/8 out) and a "slave" (12 more in).  The sliders were something like 35mm.  The console had both a -20 and a -10 pad which were nearly always fully engaged.  The mixer had way too much gain for any "normal" mic.  This was also reflected in the signal to noise ratio (really bad).

Like Ivan I was also an early adopter and dealer of Biamp 2442's.  I remember having earlier consoles with slide faders, but that 2442 console was a real deal in its day.  I replaced the fader panel on one of mine with 6 rotary pots (4 for the subgroup send busses and left and right main busses).  I made all those busses independent and post eq.  This converted it into a 7 + 2 (9 out sort of) monitor console and worked well before it was replaced by a Soundcraft 400M.

And to waver a little more, Steve, I also had a Delta Lab DL4.  During a Miss New Mexico Pageant rehearsal, one of the hired entertainers with a really large ego (not a contestant) gave me the opportunity to" experiment" with the DL4.  Making certain it was only through the mains,  I added huge vibrato to the singers voice in selected portions of his performance.  He couldn't hear it but knew something was wrong from the looks of bewilderment of the few people in the audience.  I don't think the singer ever knew why.

[Steve-White]

  =  Don't mess with the sound guy.

[Woody Nuss]

Found some info on the Troopers

https://www.worthpoint.com/worthopedia/uni-sync-monitor-mixer-rack-mount-134758261

From the ad above:   
TROUPER 1 UNI-SYNC RACK MOUNT MIXER
8 CHANNEL XLR INPUTS
4- 1/4" OUTPUTS
3 BAND EQ ON EACH CHANNEL  150 2K 8K
INPUT PAD ON EACH CHANNEL  -10DB, -20DB, OR -30DB
SOLO SWITCH ON EACH CHANNEL
4 SLIDERS ON EACH CHANNEL FOR MIX OUT 1 THRU 4
4 MASTER MONITOR OUT SLIDERS WITH 2 ROLL OFF SWITCHS ON EACH OUTPUT--- ONE HIGH AND ONE LOW
SOLO SWITCH ON MONITOR OUTS
HEADPHONE OUT WITH VOLUME ON THE FRONT
L.E.D. LIGHTS ON FRONT FOR SOLOING

[Woody Nuss]

cont for pic

[MikeHarris]

should there be any collectors out there i have a Trouper ll stereo expander...new in box

[Ivan Beaver]

Like Ivan I was also an early adopter and dealer of Biamp 2442's.  I remember having earlier consoles with slide faders, but that 2442 console was a real deal in its day.  I replaced the fader panel on one of mine with 6 rotary pots (4 for the subgroup send busses and left and right main busses).  I made all those busses independent and post eq.  This converted it into a 7 + 2 (9 out sort of) monitor console and worked well before it was replaced by a Soundcraft 400M.

This "procedure" was kinda common "back in the day".

My first monitor console was a Kelsey 20 channel, that was converted into a 20x6 monitor console.

I then had a Kustom "pro" console that I converted into a 24x8.  From what I understand there were only 7 of those consoles ever made, and at one time I owned 4 of them.  It was pretty advanced for its time, but the weirdest thing was the 5 band eq that had the "0" point at 6 oclock.  You still turned it clockwise to boost and counter clockwise to cut, but that put the pointer at the opposite position than you would expect.

My final mod (and biggest) was when I took a Mackie 32x8 and made a 32x12 monitor console.

It was A LOT of work, with a lot of rewiring, but it worked and I did a number of national acts with it.

It is much easier these days with digital, but we did what we had to do back then.

[Rick Earl]

I think the first console I bought with faders was a Kelsey.  Here is a nice link on some of the old Kelsey brochures and Prices from 1976.

 http://soundcitysite.com/kelsey_info.htm

[duane massey]

We modified a Kelsey for monitor duty as well. Also built a few 14x6 monitor mixers with XLR & mulitpin inputs, but it was all knobs, no sliders.

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