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Post by tahoebrian5 on Oct 6, 2022 12:14:08 GMT -6
Hey all, I have been experimenting with tracking vox through my audioscape Opto and having some trouble.
it seems like I can not get just a few dB of GR on the meter. It’s either nothing or almost pegged. Now, I have used it during mixing and it was working as expected in that situation so I suspect maybe a gain staging issue or something but darned if I could get it to behave.
My signal path is Beezneez 87 to AS V1290 to AS Opto to interface.
The Opto was definitely switched to compress (not limit) and I have the “sidechain” knob at noon.
Any thoughts what I am doing wrong?
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Post by Tbone81 on Oct 6, 2022 12:54:33 GMT -6
Try adjusting the HF emphasis. That “side chain” knob effects how the compressor reacts. I usually have it fully pegged, but I forget which direction lol. But I’m guessing that’s what’s messing with your gain reduction.
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Post by Ward on Oct 6, 2022 13:06:43 GMT -6
I really should get set up to do video tutorials on this but let me help, since I use all this stuff and have a little bit of experience at it...
First set the onto to GR for the meter and calibrate the set screw air the bottom of the VU meter so that it idles at zero after it has been on for at least 30 minutes.
Next, a U87 can be hot, so I'm gonna treat the Beez87 the same way. The mic should be in Cardioid for this.
Pattern at 'kidney bean', no pad on the mic, no high pass filter.
AS1290 phantom power on, in phase, high impedance, gain at 60, fader knob (gray one) at 0. 12 o'clock
(60 for a moderately loud voice, more for a quiet voice, less for a screamer or bawler)
OPTO: Gain at 43, compression at 45, flip the switch to comp,
Need more compression? Start by increasing the gray fader knob (technically an attenuator) on the AS1290. You can also increase the gain reduction knob.
Seeing results yet? Better yet, are you now hearing results?
P.S. having a rough day focusing, hope I haven't made any glaring errors.
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Post by tahoebrian5 on Oct 6, 2022 16:17:25 GMT -6
Thanks guys, I’ll give these tips a go!
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Post by phdamage on Oct 6, 2022 19:32:18 GMT -6
maybe I'm odd, but I literally never engage the emphasis knob. I'd be curious if turning it all the way counter clockwise changes your results
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Post by teejay on Oct 6, 2022 21:02:21 GMT -6
maybe I'm odd, but I literally never engage the emphasis knob. I'd be curious if turning it all the way counter clockwise changes your results It will, all things being equal. The more counter-clockwise you turn the emphasis knob, the more you will need to increase the Peak Reduction knob to get the same level or more compression. It will also impact the sonics, decreasing the audible high frequencies. Don't ask me the technicalities, but that's how it works for me. Now Ward can step in and correctly tell you how it really works. ;-) |
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Post by Ward on Oct 7, 2022 6:22:28 GMT -6
Now Ward can step in and correctly tell you how it really works. ;-) I heard you a-calling my name! Ok, in the spirit of who wants to be a millionaire,m let me bring in some other feedback from other parties who seem to be dialed-in Since the audioscape Opto (<-Click on that word!) is an incredible reproduction of the very best LA2a ever made with improvements to noise and better quality control... same help. www.puremix.net/blog/f.-reid-shippen-la-2a-emphasis.html And yes, this is decent too: vintageking.com/teletronix-la-2a-optical-compressor-limiter Essentially the emphasis knobs is a moving cross-over knob where you can set a point at which low frequency material stays out of the way of the T4 cell circuit so you don't get too much pumping and squashing going on from your input material to your output. Use it judiciously or moderately, there isn't universal agreement. Find what you like best! I'll bet you end at the same place I do. -20dbfs average input, compress chosen, 43 and 45, pre-emphasis on about 8 o'clock. |
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Post by jmoose on Oct 7, 2022 14:37:11 GMT -6
Essentially the emphasis knobs is a moving cross-over knob where you can set a point at which low frequency material stays out of the way of the T4 cell circuit so you don't get too much pumping and squashing going on from your input material to your output. Use it judiciously or moderately, there isn't universal agreement. Find what you like best! I'll bet you end at the same place I do. -20dbfs average input, compress chosen, 43 and 45, pre-emphasis on about 8 o'clock. There's a setting I nicked from joe barresi & gggarth they call "full Canadian" - both gain & peak all the way up... on 11 all the time. Adjust emphasis only. Yeah its kind of extreme but listen to the albums those guys make. Are you sure it isn't just a metering thing? What do things sound like if you don't watch the meter? Put a piece of tape over it. Meter ballistics on these things can be glacially slow. Compressor is grabbing & reacting in a way the meter doesn't accurately reflect. That's probably a factor..? I have a Demeter tube opto where the meters? By the time it shows 3dB of gain reduction its probably more like 10dB. Meters are nothing more then a guide... a suggestion of behavior not an absolute like a speedometer. That behavior is reserved for more modern boxes like a dbx & distressors. |
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Post by wiz on Oct 7, 2022 15:29:26 GMT -6
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