The MPX110 is an effect processor only, not a compressor of any sort. The MPX should be placed in the Aux send/return loop of the mixer.

Where is the 'shape' knob on the CFX12? I've had one for years, never saw that?

Is it the MKII version? Its in the manual, vocal channels have High Mid Shape and Low. Also I don't like the small submix buttons or at least they don't like smoky bars. the two channels I use for music just have Hi Hi-Mid Low-Mid and Low

Oh the swept mid - adjustable to certain frequencies between 100hz-8khz. I never saw it referenced as a shape knob in the manual which is why I was wondering. I see it references 'shape' via the 9 band graphic stating it is used to shape the frequencies of the main mix.
No it's the original that I have but the only difference between the two were cosmetic changes.

Board goes to two amps, as one feeds bass bins and one feeds highs, maybe Lonnie could tell us if serving the highs with the compressor and leaving the bass bin amp alone would be advisable?

Run it on your mics, not the main outputs. You want to compress vocals not the overall mix.
As far as two amps, if you ran an external crossover, then you could put it between the mixer & the crossover, but it really won't do no good only on one and not the other.

Receiver has 4 mics, I use one, singer uses another one, then there are two wired mics also hooked up, I would probably choose the wireless receiver and one of the wired mics to compress. So, compressor goes between mic output and mixer input.

Please comment on Billy-o's suggestion about mixer to compressor to amp, knowing that I feed two amps from my mixer?

thx, Lon.

Look at reply #19 on page 1 for the response to Billy-O.

What kind of mixer are you using?

I'm still with the behringer 1040fx we've spoken about before, until I get the mackie, on order now.

See it now, daaah (on my part) :)....This would work for those guys at the end of the song that yell out perhaps, but i see where it would cut down the music too, during the song, but at least get the screaming out, and if he's gonna scream, then he doesn't get to hear the music very well during his screaming either (teach him not to scream).

I think i'd go with the compress mic only idea.

1040FX? I can't find any info on that one?

it's true what Lonman said, but when i had it hooked up the way i had, i never had a problem with any music cut down, or i just probably didnt noticed it:), (who would, i had 6 amps , and 8 speakers and 4 subs hooked-up all the time when i used to do big venues ), but anyway i dont do that anymore..you wont go wrong with mackie boards , i have 3 of them ( 2 dfx 6 and 1 cfx 12 ):)

try 1404FX, Thx.

Weird I can't find any info on that one either - even from Behringer. Does the mixer have insert jacks on the mic channels anywhere?

IT's actually very useful
 

I also have a dbx166 xl and am extremely pleased with it. I had no idea what a compressor/limiter did but with Lonman's and other peoples help got it hooked up correctly and just started messing with it.
It isn't failproof but pretty simple to use if you dont get too cute.

Not a bad idea to get one with a de-esser to handle problems with sibilance.

Not a real common problem but nice to be able to deal with when you do.

Sam

Sorry Lon, Zenyx 1204FX behringer mixer

How Many use a compressor
 

All the effects are wonderful ONLY if you understand how they work AND how to use them. A complete nightmare if you do not.
muzicman144:f:f:f:f

Compressors
 

Hi all just reading through some of your posts, I use a behringer MDX2600 and i compress the whole mix, as it keeps all of the mixer output in check therefore protecting your bass bins and your tops from damage. It also has a limiter to protect everything whilst you have toilet break and some enthusiastic menber of the crowd tries to crank it up when your not there. I have the ratio set to 2.1 and attack set at -10 dec and the auto button pressed and the compresser does the rest. The xlr outputs go then to my x/over. Simple. Most CD's are compressed this way before printed as to keep the Volumes uniform across the mix.
Cheers.

As for compressors there are other uses for them as well but for the purposes here I use a compressor in the insert channels of all the mics with limiters set for all but mine. And my driverack has a compressor limiter built in to it that I use for outputs from the mixer to the amps. If you study how to set up a proper gain structure you an actually use certain compressors to increase the sound from your speakers safely. Compressing out transients and then bumping the gain and setting the limiter properly you wind up giving the amps more signal but inside a more controlled bandwidth with very few if any transients. Works very well once you get the hang of it. Can make a 2000 watt amp behave more like a 3000 watt. Just be sure to read up on it before you do it. If you screw it up you can kiss your speakers good-bye.