This is the result from running an AutoEQ on a single OT12, Deltalite 12 and a 12 element melded array. The speaker was sitting on an amp stand about 2ft off the ground. The measurement was made indoors in a somewhat octagonal shaped room with almost no parallel walls except for two 15' sections on the sides. The mic was 10-15ft back from the OT12, room correction was not used on the DEQ (gives a slight boost to highs and lows like a gentle traditional smily face curve). There was a 3db boost at 125Hz and 1.5db at 160Hz that I took out with no real audible effect. My thought was that should give a little more headroom before hitting xmax at 120Hz (Bill says 120Hz xmax is at 35V on the Deltalite)
I'll post another when I get the chance to run it outdoors. I usually take a moment to pink the system at each venue.
Not bad indoors, where half of what you're reading is the speaker, half the room. I set my DR200s outdoors, using four parametric bands of a five band parametric EQ. The fifth band I left available as a sweep notch filter to zap room resonant 'boom'.
It could certainly be better, but I've been very happy with the accoustics in there. The ceiling is peaked and as noted, almost no parallel surafces. The back of the stage has drape covered foam lining it and the pews are all padded seat and back. Feedback has never been an issue for us even with wireless lapel mics. I would like to treat the back of the room with something like Ethan Winer's DIY design in a 2x8 panel every couple feet, but still, no complaints.
This is the result from running an AutoEQ on a single OT12, .
I would smooth out the massive peaks/troughs at the top end. I put these down to room related issues.
Massive boost's tend to show that either the cab cant produce that freq (so the graphic tries to push it way up), or more likely that the room is canceling them out.
This is the result from running an AutoEQ on a single OT12, .
I would smooth out the massive peaks/troughs at the top end. I put these down to room related issues.
Massive boost's tend to show that either the cab cant produce that freq (so the graphic tries to push it way up), or more likely that the room is canceling them out.
But always let your ears decide the end result.
Dave
I did that yesterday morning while I played with them on the peaks. I figured the trough was either a peak, which I know the tweeter array produces in that range from RTA'ing just the array while testing, and/or a room resonance. Still sounded fine to me but I can't hear anything above 16K anyways.
gdougherty wrote: room correction was not used on the DEQ (gives a slight boost to highs and lows like a gentle traditional smily face curve).
I believe that Room EQ is a HF rolloff, not a smiley curve. A perfectly flat EQ is too trebly for most folks, I usually make the target curve with a roll off from 5k and up.
gdougherty wrote: room correction was not used on the DEQ (gives a slight boost to highs and lows like a gentle traditional smily face curve).
I believe that Room EQ is a HF rolloff, not a smiley curve. A perfectly flat EQ is too trebly for most folks, I usually make the target curve with a roll off from 5k and up.
My bad, from the manual...
The B key activates the room correction function which cuts the high frequencies and boosts the low frequency range by tilting the desired response curve by 1db/oct.
