Members sickman Posted January 20, 2010 Members Share Posted January 20, 2010 Guys, just double checking that I have this right. I am going to bring one of my JBL PRX 512s out to practice tonight so the band can hear them. We have this Carvin mixer ((http://www.carvinguitars.com/product...=RX1200&cid=12)) A couple questions.... 1) The PRX will hook up by XLR into either the right or left XLR outputs (numbers 14 and 15), correct? 2) Also, how should I adjust the gain on the PRX? I have used them at home for jamming with friends and plugged the mic directly into them. I received some feedback when the gain was turned up to high, but this could also have something to do with mic placement. 3) I'm sort of trying to sell the band on using these. Do you think it would be worth hauling out another one for practice? It would mean another trip to my car, but they're not real heavy so it's not a huge deal. If I do bring out a second one I assume I just run another XLR cable from the first PRX to the second PRX. Thanks for the input. EDIT: Well it looks like practice has been canceled for tonight, but I'd still like the info as I will save for future reference. Nothing like another gig without a practice!! Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 20, 2010 Members Share Posted January 20, 2010 Guys, just double checking that I have this right. I am going to bring one of my JBL PRX 512s out to practice tonight so the band can hear them. We have this Carvin mixer ((http://www.carvinguitars.com/product...=RX1200&cid=12)) A couple questions....1) The PRX will hook up by XLR into either the right or left XLR outputs (numbers 14 and 15), correct? 2) Also, how should I adjust the gain on the PRX? I have used them at home for jamming with friends and plugged the mic directly into them. I received some feedback when the gain was turned up to high, but this could also have something to do with mic placement.3) I'm sort of trying to sell the band on using these. Do you think it would be worth hauling out another one for practice? It would mean another trip to my car, but they're not real heavy so it's not a huge deal. If I do bring out a second one I assume I just run another XLR cable from the first PRX to the second PRX.Thanks for the input.EDIT: Well it looks like practice has been canceled for tonight, but I'd still like the info as I will save for future reference. Nothing like another gig without a practice!!your title is backwards.... hopefully. Link to comment Share on other sites More sharing options...
Members Jerry007 Posted January 20, 2010 Members Share Posted January 20, 2010 You need to run a line (XLR or 1/4") from an OUTPUT on the MIXER to the INPUT of the SPEAKER. Your title is backwards. Also, you reference "numbers 14 and 15" which sound to me like channels on the mixer. If so, you're definitely not connecting speakers to those. The mixer outputs would usually be the LEFT/RIGHT Main or Monitor outs, or AUX Sends or Sub-group output. I'd bring both speakers, and ideally, you can just swap yours with the ones that are currently hooked up. Link to comment Share on other sites More sharing options...
Members Jerry007 Posted January 20, 2010 Members Share Posted January 20, 2010 You need to run a line (XLR or 1/4") from an OUTPUT on the MIXER to the INPUT of the SPEAKER.Your title is backwards.Also, you reference "numbers 14 and 15" which sound to me like channels on the mixer. If so, you're definitely not connecting speakers to those.The mixer outputs would usually be the LEFT/RIGHT Main or Monitor outs, or AUX Sends or Sub-group output.I'd bring both speakers, and ideally, you can just swap yours with the ones that are currently hooked up. Sorry, I think you were referencing numbers 14 and 15 on the spec sheet for your mixer: 14. LEFT & RIGHT XLR OUTPUTS15. MONITOR 1 & 2 OUTPUTS You have it right, you want to be connecting to those. If you connect to the MONITOR outs, you'll need to route signal to them from the individual channel monitor sends. Link to comment Share on other sites More sharing options...
Members sickman Posted January 22, 2010 Author Members Share Posted January 22, 2010 Sorry, I think you were referencing numbers 14 and 15 on the spec sheet for your mixer:14. LEFT & RIGHT XLR OUTPUTS15. MONITOR 1 & 2 OUTPUTSYou have it right, you want to be connecting to those. If you connect to the MONITOR outs, you'll need to route signal to them from the individual channel monitor sends. Thanks. I think those are the only XLR outputs on the mixer. In regards to the title being backwards... I'm going as I learn. Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 22, 2010 CMS Author Share Posted January 22, 2010 Regarding how to set up the gain; there's no set method, but the basic idea is to not clip the power amps with too hot a mixer output, and not clip the mixer. One method is to run the amps wide open, and adjust the mixer to the desired *maximum* performance volume. Check the amp for clipping, and reduce its gain if there is any clipping. The mixer shouldn't be clipping at this point either. If it is, back off the mixer output, and make up the gain at the amp. Ideally you should be able to get desired volume without clipping. If everything's okay, reduce volume to normal performance level using the mixer main faders. Rock on. Link to comment Share on other sites More sharing options...
Members Jerry007 Posted January 22, 2010 Members Share Posted January 22, 2010 Also, make sure the PRXs are set to line level input, and try setting the gain at 12 o'clock Link to comment Share on other sites More sharing options...
Members sickman Posted January 22, 2010 Author Members Share Posted January 22, 2010 Thanks for the input. Also, would I plug one PRX into the left XLR output and one into the right XLR or would I just plug one PRX into either of the XLRs and then the second PRX into the first PRX? Thanks. Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 22, 2010 CMS Author Share Posted January 22, 2010 Thanks for the input.Also, would I plug one PRX into the left XLR output and one into the right XLR or would I just plug one PRX into either of the XLRs and then the second PRX into the first PRX? Thanks. yes Link to comment Share on other sites More sharing options...
Members sickman Posted January 22, 2010 Author Members Share Posted January 22, 2010 yes Yes means either option would work with the same result? Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 22, 2010 CMS Author Share Posted January 22, 2010 Yes means either option would work with the same result? yep:thu: Link to comment Share on other sites More sharing options...
Members sickman Posted January 22, 2010 Author Members Share Posted January 22, 2010 yep:thu: Thanks. Link to comment Share on other sites More sharing options...
Members JohnnyGraphic Posted January 22, 2010 Members Share Posted January 22, 2010 I couldn't pull up your mixer, (link doesnt work), but if your mixer IS a powered mixer, make sure that you are taking a LINE LEVEL signal, not a POWERED signal from your mixer to the speakers. Take care & enjoy those speakers!!! I have speaker envy! Johnny Link to comment Share on other sites More sharing options...
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