Members nchangin Posted June 19, 2013 Members Share Posted June 19, 2013 Hi folks, curious as to what you would do. And again I know I've been tweaking my setup and would like to give a big THANK YOU for everyone's suggestions in the past!Current setup:Yamaha cp2000 connected to pair mrx518's on each channel running @ 2 ohms, 500 WPC.QSC 2450 connected to one mrx515 per channel @ 8 ohms per channel. FTC 20 Hz - 20 kHz, 0.1% THD 650 WPC. ***pretty sure using 50 hz filter on each channel in stereo on QSC currently ***Mixer ----> EQ: Behringer stereo 15 channel -----> xover: DBX 223 ----> to amps. (EQ is flat across only use it for tweaking out feedback)I am happy with the setup seems to work pretty well but for some reason it seems I have to crank the yamaha on the subs to keep up with the QSC running the tops, assuming something with the gains on on the QSC? (inputs and outputs are 12:00 on the xover) I was thinking maybe it would be better to run the QSC on the subs for a little better performance? I have heard others say sometimes the 2450's will thermal on 2 ohm loads which is my only concern.IF I was to switch QSC to the subs @ 2 ohm load, is the filter even needed since you have the xover? If so the 30 hz or 50 hz? Also since it's subs, stereo is not necessary so I could parallel the input to both channels, and if I did this would I want to use the LF sum on the crossover or leave it off? I know I can just "do it" and let my ears make the decision but looking for factual information and experience from the pros like yall!Application: DJ only no live stuff at this time. Link to comment Share on other sites More sharing options...
Members Unalaska Posted June 19, 2013 Members Share Posted June 19, 2013 I think you'll find that a difference of 6db between subs and tops will get what you're after. Boost the gain on the crossover by 6 db. Link to comment Share on other sites More sharing options...
Members Scott Harris Posted June 20, 2013 Members Share Posted June 20, 2013 I would suggest that you double up on subs, especially for DJ use! Link to comment Share on other sites More sharing options...
Members nchangin Posted June 21, 2013 Author Members Share Posted June 21, 2013 I am doubled up, 2 x 18 on each side. 4 ohms in parallel = 2 ohm load each side for subs. And it does go boom boom, I think I'll switch em this weekend and see what happens. Link to comment Share on other sites More sharing options...
Members agedhorse Posted June 21, 2013 Members Share Posted June 21, 2013 2450 on subs, Yamaha on mains, for power distribution reasons. Yes, you will need between 3 and 6 dB more gain on subs for sensitivity matching reasons. Link to comment Share on other sites More sharing options...
Members nchangin Posted June 21, 2013 Author Members Share Posted June 21, 2013 Aged approved, I'm getting excited, yes sir. Thanks Aged! Link to comment Share on other sites More sharing options...
Members Axisplayer Posted June 21, 2013 Members Share Posted June 21, 2013 agedhorse wrote: Yes, you will need between 3 and 6 dB more gain on subs for sensitivity matching reasons. Unless you are playing with WynnD. Link to comment Share on other sites More sharing options...
Members agedhorse Posted June 21, 2013 Members Share Posted June 21, 2013 Yup, subs optional! Link to comment Share on other sites More sharing options...
Members nchangin Posted June 21, 2013 Author Members Share Posted June 21, 2013 Subs optional? ha. I am going to set the filter @ 30hz, if memory serves those 18's go down to 40 hz right? so it wouldn't make sense to set filter at 50 hz for subs correct? Link to comment Share on other sites More sharing options...
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