I would use the 1600 watts at the continuous rating-NOT the program rating.So that would be 80V. I would also change the attack time to 20-30ms.Remember that the peaks are generally short, so they will pass before the attack time start to dramatically limit them.You MUST weigh getting that little extra dB or so out of a cabinet-vs burning them up.What is most important?To me-having the cabinet working at the end of the night is MUCH more important than trying to squeeze an extra dB or so out of the cabinet-that NOBODY would every notice.
Andrew, if you look at some attack times that JBL uses on their itechHD presets for their own subwoofers, they are in the 4-7 second range. I know Ivan recommends a little shorter 1-2 seconds. Kinda all how cautious you want to be. Sent from my iPhone using Tapatalk
Having my gear intact at the end of the night is obviously the more important thing here. Would having the peak voltage at the program rating really be that likely to harm the subs? I appreciate your wisdom and insight on this matter, Ivan!Please see the attached revision. Do the release and attack times for the RMS (thermal) limiter look in line with what they should be?
For example-if you want to "squeeze every watt" out of any loudspeaker, then tell me what SONG you want to play.I can analyze it and come up with some settings to "get the most" out of the loudspeaker.
I believe its basically a compressed 36Hz sine wave with a peak-to-average ratio of less than 3dB.What would you set for that track and a TH115?
Hi Ivan,I was under the impression that the TH115 has a 36Hz tuning frequency, but (as with most tapped horns I've seen) rolls off slightly before that. Perhaps the TH118, then?Either way, just curious about how cautious you'd be with music that approximates sine waves, and the worst-case where the sine wave happens to be at a frequency where there's not much driver cooling. You've certainly tested more speakers than me, so any insight into what happens when the going gets really tough would be appreciated.CheersChris
I was under the impression that the TH115 has a 36Hz tuning frequency, but (as with most tapped horns I've seen) rolls off slightly before that. Perhaps the TH118, then?
That's what I'd do, for sure....too easy and low $ vs cost of a lateral change...I could see a jump to TH-118's or Orbit Shifters or something in that vein, but why spend very much money for any move less than that..Here's a good review of the 800 series, that you'll need to put in google translate..http://www.production-partner.de/test/jbl-srx-800-im-test/It's mostly about the 835 and 815, but it does provide some info about the 828..edited for more clarity
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