Members samkokajko Posted January 15, 2010 Members Share Posted January 15, 2010 You can leave your speakers hooked up the same as they have been. Now you will only have 1 XLR plugged into the input of channel 1 on each amp. Nothing plugged into channel 2. From your Xover the hi signal to the RMX2450 ch1. The low signal to the PLX3402 ch 1. There are dipswitches on the back of your amps you need to put switches 4 and 5 into the on position, on the PLX you need to put 6 in the on position also. That will parallel your inputs so that both speakers are still getting the same signal (from ch1). Do this to both amps and also make sure that the switches for "bridged mode" are in the OFF position. Also I would turn on the clip limiters. For me the setup for the PLX would be1 On 2 Off3 On4 On5 On6 On 7 OFF8 On9 Off10 On And the RMX1 On 2 Off3 On4 On5 On6 OFF7 OFF8 On9 Off10 On Link to comment Share on other sites More sharing options...
Members nToHrv Posted January 15, 2010 Author Members Share Posted January 15, 2010 Wow, all your info is great ... i have to bow down to you guys, thanks for all your help ... oh, samkokajko, i don't believe the PLX3402 has that switches however the RMX2450 does. Link to comment Share on other sites More sharing options...
Members samkokajko Posted January 15, 2010 Members Share Posted January 15, 2010 As per QSC's site it shouldhttp://media.qscaudio.com/images/hi_res/PLX3402_back_hi.jpgThat's where I got my numbers for the switches I also used to own several PLX amps from that line, not the 2402 but 5 of the smaller ones and they all had the dip-switches. Link to comment Share on other sites More sharing options...
Members nToHrv Posted January 15, 2010 Author Members Share Posted January 15, 2010 Yes it does, sorry samkokajko. So my last question (hopefully) ... Since i'll only be going through on channel on the crossover ... i will only have to set the crossover freq. from low/high ... ?? don't have to worry about mid to high ??Therefore, seeing as my subs are EV QRX 118S's .... i will turn the X-Over Freq. dial on channel 1 (on the dbx 223xl) to 100Hz .... and thats it ? nuthin from mid to high x-over freq ? Link to comment Share on other sites More sharing options...
Members samkokajko Posted January 15, 2010 Members Share Posted January 15, 2010 Make sure that all the buttons on the back of the x-over on the up position (not engaged) even the one that says mono/stereo. I know it seems counter-intuitive but you are running the x-over in stereo 2-way mode and only using channel 1. If you put it into mono mode with that switch then it will also become a 3way xover which you do not want. All buttons on the back out, hook up your input from your EQ, high out to your RMX, low out to your PLX, set up your amp dipswitches. Put your x-over freq around 100Hz to start and balance your output levels with the crossover. Step 3, rock. Link to comment Share on other sites More sharing options...
Members nToHrv Posted January 15, 2010 Author Members Share Posted January 15, 2010 Thanks samokokajko ... all your help has been great. That part with having the button down for STEREO mode (but i'm running Mono) is quite confusing but i understand what you are saying. Why do these developers do that ? Why don't they just make a unit where it's plug and play with whatever mode you wish to run ? Link to comment Share on other sites More sharing options...
Members Crownman Posted January 16, 2010 Members Share Posted January 16, 2010 Thanks samokokajko ... all your help has been great. That part with having the button down for STEREO mode (but i'm running Mono) is quite confusing but i understand what you are saying. Why do these developers do that ? Why don't they just make a unit where it's plug and play with whatever mode you wish to run ? Because they make the units to work with a few different setups. It gets them a larger market for the unit. Link to comment Share on other sites More sharing options...
Members samkokajko Posted January 17, 2010 Members Share Posted January 17, 2010 Because in reality you are using the unit in stereo mode. Each channel is separate, you just aren't plugging into one. Yeah it's a little confusing on the labeling side but it makes sense in the signal flow sense. Link to comment Share on other sites More sharing options...
Members nToHrv Posted January 18, 2010 Author Members Share Posted January 18, 2010 Stupid question ... but with the amps running in parellel mode and with only ONE xlr plugged into ONE channel on the amps ... do i still turn the gain knobs up on channel two on the front of the amps ??Thanks Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 18, 2010 Members Share Posted January 18, 2010 Depends entirely on the amps. IIRC you need to turn both channels up on the RMX & PLX. Link to comment Share on other sites More sharing options...
Members samkokajko Posted January 18, 2010 Members Share Posted January 18, 2010 On the RMX/PLX for parallel mode, yes, both input att knobs need to be turned up to get output on both channels. The input gets split before them. Link to comment Share on other sites More sharing options...
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