dbx and martin audio system

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   hi
i am setting up  a system for a friend...4 x martin audio blackline s18 with 4 x martin audio em186, powered by a lab 3400 for the subs, a qsc rms850 for the midhighs and a qst plx 3002 for the 15". i am using a dbx driverack 260 that i've never used before and it doesnt take too much to set up crossover filters, gains, peq and everything i have found about these boxes in the martin audio settings page. 

i am not really familiar with some parameters in the limiters section of the dbx 260 like hold and release times and the overshoot so if anyone can help its much appreciated, i have put auto compressor on the stereo inputs, 

i am setting up as follow

ch1+2  667hz to 20khz 24db LR 0 db gain, limiter on, threshold 4db, attack 1ms (Mid-high section)
ch3+4  88.4hz to 667hz 24db LR 0db gain, limiter on, threshold 5db, attack 8.1ms (15” reflex)
ch5+6 30.4hz to 118hz 24db LR 0db gain, limiter on, threshold 7db, attack 44ms (18” reflex)

no delays Between mid and mid highs following Martin audio settings and no delays + overlap on the 15”+18” combination but I will measure in the room and add delays to get a good summation - I think that overlap can help the live bands that would be 90/100 of his program and mostly just put a mic on the kick drum, room isn’t that big

when i will set up i will try to measure but it would be nice to have a rough setup before, and a good limiting, as i will probably never babysit his system. i think these boxes can still sound quite nice, I heard them very harsh sounding then I checked the settings and they didn’t make any sense

Edited by king david - 02 December 2021 at 10:39pm

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king david Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 17 January 2007 Location: italy Status: Offline Points: 1324	Post Options Post Reply Quote king david Report Post Thanks(0) Quote Reply Topic: dbx and martin audio system Posted: 02 December 2021 at 9:55pm
	hi i am setting up a system for a friend...4 x martin audio blackline s18 with 4 x martin audio em186, powered by a lab 3400 for the subs, a qsc rms850 for the midhighs and a qst plx 3002 for the 15". i am using a dbx driverack 260 that i've never used before and it doesnt take too much to set up crossover filters, gains, peq and everything i have found about these boxes in the martin audio settings page. i am not really familiar with some parameters in the limiters section of the dbx 260 like hold and release times and the overshoot so if anyone can help its much appreciated, i have put auto compressor on the stereo inputs, i am setting up as follow ch1+2 667hz to 20khz 24db LR 0 db gain, limiter on, threshold 4db, attack 1ms (Mid-high section) ch3+4 88.4hz to 667hz 24db LR 0db gain, limiter on, threshold 5db, attack 8.1ms (15” reflex) ch5+6 30.4hz to 118hz 24db LR 0db gain, limiter on, threshold 7db, attack 44ms (18” reflex) no delays Between mid and mid highs following Martin audio settings and no delays + overlap on the 15”+18” combination but I will measure in the room and add delays to get a good summation - I think that overlap can help the live bands that would be 90/100 of his program and mostly just put a mic on the kick drum, room isn’t that big when i will set up i will try to measure but it would be nice to have a rough setup before, and a good limiting, as i will probably never babysit his system. i think these boxes can still sound quite nice, I heard them very harsh sounding then I checked the settings and they didn’t make any sense Edited by king david - 02 December 2021 at 10:39pm
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Conanski Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2534	Post Options Post Reply Quote Conanski Report Post Thanks(0) Quote Reply Posted: 03 December 2021 at 12:46am
	So it's essentially a reflex system.. ignoring the mid/hi combo. I don't like the low-mid/sub overlap and would be tempted to roll my own processing if time and resources allowed, but I'd use the same 80hz and 650hz crossovers to start with. The PEQ you come up will be the difference between OK and stellar sound out of these.