SSL EQ & DYN & AMP Cards

[atticmike]

Howdy fellas,

Can anybody tell me from what consoles these cards were taken from?



Thanks in advance.

Mike

[sintech]

Hi, these items look mid 90's SSL G series. 4/6/8000 depending on routing, maybe G+ as the 242 "Black" eq is pictured. Very clean looking :-)

More pics, please :-)

[atticmike]

haha, I can comply with your request in a couple of hours

So the EQ card is original black / black in general and the other stuff G series 4k? Do you think that this is the best combination in terms of EQ, DYN, and AMP card? Whereas in terms of EQ i of course prefer the black EQ over anything else that SSL has put out yet, except maybe the "pultec" card, I guess the 132? Like when people like CLA upgraded their 4k with new line amps and dynamics cards?

[atticmike]

I also got a question about that comp from the picture: if I go into the channel at -10dbv (digital), I have to pull the release knob for a faster attack because it wouldn't be reacting at all otherwise,  at a 1:1.5 / 1:2 ratio, is that normal? I mean, that attack time is def. way too fast for a snare which is easily audible but at a low ratio, I can't get the comp working with the regular auto attack. Something wrong with the dynamics card maybe? The Threshold is also as low as possible, -20db.

Mike

[sintech]

Hi, I run my module test jig with an unbalanced -10 Mbox.

Have to crank the line input up a little to get compression starting, so I'd say all is good with yours.

[atticmike]

Hi, I run my module test jig with an unbalanced -10 Mbox.

Have to crank the line input up a little to get compression starting, so I'd say all is good with yours.

Are you sure? I mean, I go balanced into the box, straight from a lynx aurora and it's really doing nothing at those ratios. I'd have to almost go full limit in order for the comp to react. The gate on the other hand works perfectly. Might be something wrong with the calibration?

Well, it is actually not that harsh but I can't get more than -3 db gain reduction at a 1:2 ratio.

*Update* Obviously, the gate is not gating at all but lightening up like a christmas tree.

[sintech]

The 611 calibration guide is in the documents section of the forum.

[atticmike]

The 611 calibration guide is in the documents section of the forum.

thanks but something's disconnected cause the dynamics section's not doing anything to the signal at all but blinking like a christmas ornament as I said before.

[sintech]

Ok, looking at the schematic, I'd change T8 or T4 first, it has to be somewhere late in the sidechain circuit.

You could also scope back from pin 3 of the VCA, until you find the control voltage.

[atticmike]

I believe it's though the calibration. Unfortunately, it's not saying which pots at the card I'm supposed to adjust?

[sintech]

The schematic has the preset pot descriptions, three of the VR's are also marked on the board, and VR3 is the "Set Gate" adjustment.

[atticmike]

I tried the calibration and it's not working, I mean, weirdly it's changing at the gain reduction stage, like if I turn the trim pot 0dbm, it's of course either doing more or less compression, I can tell that by what the meter's indicating, not affecting the signal though.

So obviously, it's cut off somewhere? I mean, if the dynamics section is engaged and I let audio pass through the unit, the meter's going up, like indicating compression, signal's coming out of the channel but not affected by the comp. Weird.

What am I supposed to do now?

Basically weird that it is doing all the levels, gain reduction and gating at the meter but actually not doing anything at all. I'd get it if I engaged the dynamics and nothing would pass but it's still passing through.

[sintech]

The very short audio path is ok, straight in and out of the VCA via a few caps and one IC.

The sidechain is doing it's thing as indicated by the metering. So the issue must be between VCA Pin 3 and IC8 or IC8 and IC4 right before the CVoltage hits the VCA.

With a constant tone, you should start looking for the constant control voltage, you could do this with a multimeter, or a scope.

[pascal.verdet]

If the meter are OK. Please check first IC8 (5534), and IC4, but this IC is 4 opamp package, and 2 opamp drive meter ...

[sintech]

If the meter are OK. Please check first IC8 (5534), and IC4, but this IC is 4 opamp package, and 2 opamp drive meter ...

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