Setting up AVC2s & multiband compression

Hello, I just set up a soundsystem in a venue and it sounds GREAT!

I'm wondering if an AVC2 set up to A-weighted curve will turn all down when the sound hits the top of the curve or if it's clever enough to turn it down by a "flipped! A-weighted curve?
I'm not sure if it's "sensing" a-weighted or outputting a-weighted...

It's the usual issue:
At the start of the night they think there's too much bass
At the end of the night they think there's too much highmids

There's several ways to get around this:
1. Having a soundengineer, this won't happen often, it's a club.
2. Having a multiband compressor, which is yet another unit in the path + Eq's are not nice.
3. Having more output limiters & mids & high on lms, which I did set up, but compression isn't nice.
4. If that AVC2 turns down after A-weighted curve it could be perfect, if not I'll tell ask them to make it! :-)

Best would be a LMS system won't turn up mid&high as much as midbass & sub when pushed...

Oh, by the way, the system is:
4 tms-2s, set up quadrophonic
6 Groundsound ported horns in a monostack.
Xilica xover, lab gruppen amps 4-way: fp2400/6400/13000 :-)

Subs has been delayed so all timing matches from all tops & subs in the middle, feels great!
Of course quadrophonic configurations are always a mess, but it works well, seems to kill the reverb.

Unless you need a cretin limiter I would forget the AVC or the Drawmer, they are only used when the DJ has never met me with a 4x2".

Something something fletcher munson....

Dynamic EQ would work, look at a SIDD, DP548 or NST audio unit. Or the new Behringer DEQ

Best to have a engineer preset tho

Thanks for all the answers, I'm not sure what you mean by a crossfader?
-and yes shagnasty booming is one thing coming into play:

-When the room is full Meat, cartilage & bones of the people are perfect bass absorbers.
-The human ear sensitivity raises dramatically up to 4khz were it hurts when loud.

So it's not just the subs that needs to go up, the kick/midbass as well, basically a unit turning down by an a-weighted curve would be perfect, yet again eq is never perfect, as it will twist the phase unlike output gains being adjusted on the lms, but adjusting output gains on lms brings along another issue: It changes the crossover; Imagine "lifting" the bass curve output, the point where it crosses with the next speaker will then also be raised! So at the moment 15s are crossed 226hz, whereas 10s go in at 265 hz, otherwise there's too much overlap giving far too much 250hz.

So at the moment I'm thinking of two options:
1. Doing 2 or more xover presets
2. Using input a/b for start of the night & input c/d for the end, yet I can't adjust gain for output seperately from each input (just turn on / off & then gain), so this means I'd have to add eq to either input ab or cd. For now I just showed them how to turn amp knobs, but this won't really work.

I'm thinking this is a VERY common issue, so good to see some solutions out there! , what is SSID? The DP548 or NST audio looks interesting, but I wasn't hoping to invest in a new dsp :-)


Edited by tv00 - 27 March 2017 at 9:57am

There won't be that much absorbtion at 2khz, as tops are flying shooting straight in the ears & subs are on the floor playing into the crowd, but then it must be much due to human ear sensivity. A dynamic eq multiband compressor should be set up to hit broad area at 4 khz, not the bass.

Sabine Real Q(2)? If you can find one.