At 10 ft? I'll measure, and report. My guess is peaks of maybe only 107 dB at 10 feet, per side, so that would be 110 or more for both channels. Perhaps the Sunfire "cannon" will be more, but I'm hoping not to really push it, cause I don't want to blow the thing up, or shatter the box! I'm sure the pipe will hold up fine though...we were thinking of setting off some cherry bombs in it too, heh heh!!
It is outdoors, but it's only my 250 wpc amp into 8 ohms driving the l-r speakers. The ideal amps for this system would probably be a pair of Crown K2, bridged mono, since the EVX-150A handles 1000 watts rms into 8 ohms. (I could then use my Krell's "meager" 250 watts to power the high frequency drivers, with an active crossover). I can't afford to do this yet, and have the inclination to spend my money on what I spend the most time listening to anyway.
Each EVX-150A thermally limits at 130 dB at one meter (above 60 Hz, and depending on the enclosure), so at 10 feet, music peak output at the thermal limit of each one is probably limited to maybe 115? It'd take more than 1000 watts (into 8 ohms) of clean amplifier power per channel to get there, and I've spent all my money on expensive audio cables lately...lol!
Also, I'm not even sure the Crown K2's way above average damping factor of 3000 would be enough to sound "tight", at such coil-melting power input levels! The EV's certainly aren't speced to have an ultra long linear excursion (I bought these in 1994), but then, no woofer used in sound reinforcement has a long linear excursion (save for the 18 inch Aurasounds...now called "Seismic Systems"...and they're an awesome 1.5 inches linear, peak to peak!!) Pro Sound companies generally horn load their "subwoofers" in "w-bins", etc., to get more output from less cone excursion. They're interested in maximum output for minimum power input, at minimum expense, with minimum space and weight. If the woofers are producing highish harmonic distortion, they generally don't seem to care much, so long as the output is there. (IMO, the most interesting "concert sound" subs have been the "Servodrive" ones, which use servo motors to drive two cones into a 14 foot long folded horn...I've seen them, but never heard them up close...they were widely used in the 1980's and early 90's by many large touring acts such as Michael Jackson's "Bad" tour; Alabama's June Jam; U2's Zooropa tour; and Def Leppard's Hysteria tour.
ServoDrive claimed extremely low harmonic distortion (only 1% at full ouput, 140 dB at 30 feet at 30 Hz, with four cabinets arrayed), but apparently (and I'm guessing) many touring sound companies have found that the ServDrive's IM distortion was high (and maybe that bass IM distortion is more audible than bass harmonic distortion), and this blunted bass transients too much...Plus, they did have to replace the rubber belts that drove the cones fairly often, or so I gather. I'd still like to own some one day, muh hah hah hah!!
The horn drivers in these of mine now, are Eminence 1 inch exit, they're 16 ohms, and handle 40 watts rms into 16 ohms. They'll play loud, but certainly not 130 dB/1 meter (have a 100 dB sensitivity). The horn is small, only 6 by 9 inches, 40 x 90 degree dispersion, and is a "constant directivity" type. I'd like to replace them with that new Eminence 2 inch exit driver, on a 20 inch Renkus Heinz horn, use an active crossover, and maybe augment with the best ring-radiating super tweeter I can find (perhaps JBL's). Anyways, that approach might be cheaper and/or better than buying those legendary Pioneer TAD drivers...
I hardly ever use this EV/Eminence system...my brother and I built the cabinets 12 years ago (they've had several different drivers since then)...It needs graphic equalization to approach flatness, and even then it's a bit too colored to do comparisons of highend audio cables...nudge, nudge!
It is outdoors, but it's only my 250 wpc amp into 8 ohms driving the l-r speakers. The ideal amps for this system would probably be a pair of Crown K2, bridged mono, since the EVX-150A handles 1000 watts rms into 8 ohms. (I could then use my Krell's "meager" 250 watts to power the high frequency drivers, with an active crossover). I can't afford to do this yet, and have the inclination to spend my money on what I spend the most time listening to anyway.
Each EVX-150A thermally limits at 130 dB at one meter (above 60 Hz, and depending on the enclosure), so at 10 feet, music peak output at the thermal limit of each one is probably limited to maybe 115? It'd take more than 1000 watts (into 8 ohms) of clean amplifier power per channel to get there, and I've spent all my money on expensive audio cables lately...lol!
Also, I'm not even sure the Crown K2's way above average damping factor of 3000 would be enough to sound "tight", at such coil-melting power input levels! The EV's certainly aren't speced to have an ultra long linear excursion (I bought these in 1994), but then, no woofer used in sound reinforcement has a long linear excursion (save for the 18 inch Aurasounds...now called "Seismic Systems"...and they're an awesome 1.5 inches linear, peak to peak!!) Pro Sound companies generally horn load their "subwoofers" in "w-bins", etc., to get more output from less cone excursion. They're interested in maximum output for minimum power input, at minimum expense, with minimum space and weight. If the woofers are producing highish harmonic distortion, they generally don't seem to care much, so long as the output is there. (IMO, the most interesting "concert sound" subs have been the "Servodrive" ones, which use servo motors to drive two cones into a 14 foot long folded horn...I've seen them, but never heard them up close...they were widely used in the 1980's and early 90's by many large touring acts such as Michael Jackson's "Bad" tour; Alabama's June Jam; U2's Zooropa tour; and Def Leppard's Hysteria tour.
ServoDrive claimed extremely low harmonic distortion (only 1% at full ouput, 140 dB at 30 feet at 30 Hz, with four cabinets arrayed), but apparently (and I'm guessing) many touring sound companies have found that the ServDrive's IM distortion was high (and maybe that bass IM distortion is more audible than bass harmonic distortion), and this blunted bass transients too much...Plus, they did have to replace the rubber belts that drove the cones fairly often, or so I gather. I'd still like to own some one day, muh hah hah hah!!
The horn drivers in these of mine now, are Eminence 1 inch exit, they're 16 ohms, and handle 40 watts rms into 16 ohms. They'll play loud, but certainly not 130 dB/1 meter (have a 100 dB sensitivity). The horn is small, only 6 by 9 inches, 40 x 90 degree dispersion, and is a "constant directivity" type. I'd like to replace them with that new Eminence 2 inch exit driver, on a 20 inch Renkus Heinz horn, use an active crossover, and maybe augment with the best ring-radiating super tweeter I can find (perhaps JBL's). Anyways, that approach might be cheaper and/or better than buying those legendary Pioneer TAD drivers...
I hardly ever use this EV/Eminence system...my brother and I built the cabinets 12 years ago (they've had several different drivers since then)...It needs graphic equalization to approach flatness, and even then it's a bit too colored to do comparisons of highend audio cables...nudge, nudge!