Members jimivaughnking Posted January 16, 2007 Members Share Posted January 16, 2007 Looking at the new JBL MRX (and all the JBL specs on their website) they list 3 wattages. 400 W / 800 W / 1600 W for the MRX515. I'm used to seeing RMS and Peak. What is the third measurement? I know you need to size power amps for double the RMS but in this case I'm not sure which is the RMS value. Please help figuring out what each of these 3 values are.Thanks. Link to comment Share on other sites More sharing options...
Members ned911 Posted January 16, 2007 Members Share Posted January 16, 2007 Continuous/Program/Peak Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 16, 2007 Members Share Posted January 16, 2007 Looking at the new JBL MRX (and all the JBL specs on their website) they list 3 wattages. 400 W / 800 W / 1600 W for the MRX515. I'm used to seeing RMS and Peak. What is the third measurement? I know you need to size power amps for double the RMS but in this case I'm not sure which is the RMS value. Please help figuring out what each of these 3 values are.Thanks. Yes, you absolutely MUST double your speaker's RMS or your speakers won't emit any sound. Link to comment Share on other sites More sharing options...
Members Unsound Practices Posted January 16, 2007 Members Share Posted January 16, 2007 So... for the benefit of the masses, would a PLX1104 (325 watts @ 8 Ohms) or the PLX1804 (600 watts @ 8 Ohms) be a better choice for your average pub rock band running sound from the stage? I've been looking at the MRX512M which have the same rating as the 515. Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 16, 2007 Members Share Posted January 16, 2007 So... for the benefit of the masses, would a PLX1104 (325 watts @ 8 Ohms) or the PLX1804 (600 watts @ 8 Ohms) be a better choice for your average pub rock band running sound from the stage? I've been looking at the MRX512M which have the same rating as the 515. The second amp will get you about 2db more of clean volume at the risk of taxing the speaker more. Is it worth it? What subs do these cabs have to keep up with? Link to comment Share on other sites More sharing options...
Members Unsound Practices Posted January 16, 2007 Members Share Posted January 16, 2007 The second amp will get you about 2db more of clean volume at the risk of taxing the speaker more. Is it worth it? What subs do these cabs have to keep up with? One MRX518 per side if we buy it, or an SRX718 per side if we rent it. We'd be renting for a while, and the 512s would be mains or mons depending on the venue and how quickly we get our IEM system together. Link to comment Share on other sites More sharing options...
Members jimivaughnking Posted January 16, 2007 Author Members Share Posted January 16, 2007 I also saw on the JBL website: continuous/program/peak. I gues my question is which of these is the RMS rating? I am not used to seeing continuous and program. And I know that doubling RMS is not manditory but a guideline of where you should try to be to be safely powering your speakers.Thanks again for all the replies. Link to comment Share on other sites More sharing options...
Members Al Poulin Posted January 16, 2007 Members Share Posted January 16, 2007 I also saw on the JBL website:continuous/program/peak.I gues my question is which of these is the RMS rating? I am not used to seeing continuous and program. And I know that doubling RMS is not manditory but a guideline of where you should try to be to be safely powering your speakers.Thanks again for all the replies. RMS is always the lowest number, the most conservative one, and ultimately, the safest one. Al Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 16, 2007 CMS Author Share Posted January 16, 2007 RMS is always the lowest number, the most conservative one, and ultimately, the safest one. Al I've seen enough examples where the low number is program power to be very cautious about this. Link to comment Share on other sites More sharing options...
Members Al Poulin Posted January 16, 2007 Members Share Posted January 16, 2007 I've seen enough examples where the low number is program power to be very cautious about this. True. I meant when there are three numbers present, as in his example. Al Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted January 16, 2007 CMS Author Share Posted January 16, 2007 True. I meant when there are three numbers present, as in his example. Al Yup. Then again...... Link to comment Share on other sites More sharing options...
Members Dark Ice Posted January 17, 2007 Members Share Posted January 17, 2007 Continuous normally = RMS, although I've seen "continuous program" come up a couple of times, just to confuse matters Steve. Link to comment Share on other sites More sharing options...
Members guitarharv52 Posted January 17, 2007 Members Share Posted January 17, 2007 I've seen enough examples where the low number is program power to be very cautious about this. Yeah, I've seen several speakers listed with only program and peak listed. Link to comment Share on other sites More sharing options...
Members Ray Tremblay Posted March 6, 2007 Members Share Posted March 6, 2007 Stay below 400 watts RMS with the MRX515's!!! Trust me. Been there, cooked em'. Link to comment Share on other sites More sharing options...
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