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Author Topic: [AMEK 9098 compressor/limiter] sidechain send/return  (Read 2860 times)

2000F

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[AMEK 9098 compressor/limiter] sidechain send/return
« on: October 14, 2010, 03:20:37 am »

Hi,
I have been looking at our AMEK 9098, wondering what and how the sidechain system works: What AMEK terms sidechain return is similar to 'in' on other compressors, yet it also sports a sidchain send (on XRL too on the back of the unit). What does the send do?

Unfortunately, the left channel sidechain in doesn't seem to work, even though the right channel does. By selecting the 'sidechain in' meter mode I can detect the level of the sidechain in, and it shows up loud and clear on the right channel. Nothing on the left. The same happens when I switch the two sidechain in cables. So it seems to be a problem related to the inside of the AMEK.
Any ideas; not much help to be found on the AMEK website unfortunately.


Cheers! Smile
Frederik
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ssltech

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #1 on: October 14, 2010, 06:58:07 am »

2000F wrote on Thu, 14 October 2010 03:20

Hi,
I have been looking at our AMEK 9098...


9098 what?

Console? Inline or split? -or outboard piece?

What sidechain switch? -Where is it located?

Keith
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MDM (maxdimario) wrote on Fri, 16 November 2007 21:36

I have the feeling that I have more experience in my little finger than you do in your whole body about audio electronics..

tom eaton

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #2 on: October 14, 2010, 07:28:29 am »

A sidechain send allows you to process the signal that will be driving the gain reduction without processing the signal that you will be hearing.  So, in your case, you could feed your signal into the regular input of the compressor, take it out of the sidechain jack to an eq and emphasize the things you want the compressor to respond to, take the output of the eq back to the sidechain return and the compressor will respond to the signal that you've tweaked instead of the un-eqed signal.  Very useful for keeping a compressor from responding to low end.  

All duckers work that way, too.  Split your "more important" signal, feed one part to the console and the other to the sidechain return, feed your "less important" signal to the compressor input.  When the "more important" signal happens it will cause gain reduction to the "less important" signal, getting it out of the way.

t

2000F

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #3 on: October 14, 2010, 06:11:54 pm »

It's the dual compressor/limiter unit.
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2000F

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #4 on: October 14, 2010, 06:13:35 pm »

tom eaton wrote on Thu, 14 October 2010 13:28

A sidechain send allows you to process the signal that will be driving the gain reduction without processing the signal that you will be hearing.  So, in your case, you could feed your signal into the regular input of the compressor, take it out of the sidechain jack to an eq and emphasize the things you want the compressor to respond to, take the output of the eq back to the sidechain return and the compressor will respond to the signal that you've tweaked instead of the un-eqed signal.  Very useful for keeping a compressor from responding to low end.  

All duckers work that way, too.  Split your "more important" signal, feed one part to the console and the other to the sidechain return, feed your "less important" signal to the compressor input.  When the "more important" signal happens it will cause gain reduction to the "less important" signal, getting it out of the way.

t


Cheers, Tom. Much appreciated. Makes quite good sense, though I have to try it to figure out how and when I can use it. But sounds pretty smart.

Bless
Frederik

PS. Reckon I should get a tech to look at the left channel; no sidechain input unfortunately. Right channel works perfectly.
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tom eaton

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #5 on: October 14, 2010, 11:30:52 pm »

Any old cheap eq in a sidechain path can make a huge difference in how useful a compressor can be.  And you really can use any old equalizer you might have lying around... no one will ever hear the sidechain path.

t

Fletcher

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Re: [AMEK 9098 compressor/limiter] sidechain send/return
« Reply #6 on: October 15, 2010, 03:31:18 am »

That's the reason they make Behringer stuff - isn't it?  Side chain duty...
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CN Fletcher

mwagener wrote on Sat, 11 September 2004 14:33
We are selling emotions, there are no emotions in a grid


"Recording engineers are an arrogant bunch.  
If you've spent most of your life with a few thousand dollars worth of musicians in the studio, making a decision every second and a half... and you and  they are going to have to live with it for the rest of your lives, you'll get pretty arrogant too.  It takes a certain amount of balls to do that... something around three"
Malcolm Chisholm

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