Hornloaded will squish both...(provided you're serious about building a proper horn)
Uh... yeah... enlighten us all. :bigsmile: I think we all know this is not possible with a reasonably sized cab/horn in normal listening environments. If it is and you have come across some "new" discovery, then let's start a new thread and I am sure it will be the "hit" of the forum.10Hz low enough for ya? What about 135dB at 10Hz from a single 12" driver?
Care to explain this...I'll build 4 and so would everyone else. Hence it is impractical, impossible, or otherwise unattainable. This thing would make every other bass enclosure and driver whether, HT, car audio, Proaudio, cinema, or whatever, obsolete.10Hz low enough for ya? What about 135dB at 10Hz from a single 12" driver?
So ...it's not impractical, impossible, or otherwise unattainable. 137db @ 16hz ...u would be the new 'Basspig' :hail:AE AV12X, 8Hz flare tractrix horn truncated to 1800cm in length. Like I said, you need to be serious about building a proper horn....now before this is ruled out as totally impractical, there's a lot of space available in an attic that is normally being used as the rear wave of the IB. The total system volume for this is 1000 cubic feet, which with efficient folding could fit in a 10x10x10 box...
Now for one that I might build....
Four AE AV12X drivers in an offset horn. Flare rate of 15Hz truncated to 18ft with a 16ft mouth. 100V into a series parallel arrangement will yield an easy 145dB down to 20Hz. Total volume comes to around 100 cubic feet.
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You can make things even smaller if you want to account for the extra loading the corner of the room will offer....or just let the room loading extend the response down an extra octave or so
It all just comes down to how serious you are....one of the attics posted in this thread could easily fit such an obnoxious horn in it.1000cu ft.:sneeky: C'mon now Mike. I like a good horn too and I'll give them their due, but that's just not going to work for most people. 1000cu ft is a small room.
For starters, this is predicted in 1/8 space, so you get an extra 6dB compared to half-space right off the bat.Honestly I still don't believe it'll hit that 135db at 10hz without driver disintegration no matter what HR says. The input power is listed at 1000w but the graph shows well more than 30db of gain in some areas and the sensitivity at 10hz is like 113.5 db? Is this possible? I can't think of a single product on the market with that kind of sensitivity below 100hz. Also is this graph for half space, quarter space or what?
Because most of those environments have very strict limitations to the depth of the enclosure. And if you want any control of your polars in such a situation (which you do), then going direct radiating is the only option. In cases where depth isn't a limitation, then I agree....what the are they thinking?If you can picture how big a 25 cu ft EBS ported cab is, it's absolutely huge. We are talking about the space of 35 of those conservatively. If this kind of performance is easily attainable with a good $300 medium duty 12" driver and $700 worth of wood, why aren't IMAX's,theaters and amusement parks using big horns like this for subwoofers? They'd save thousands of dollars and have higher performance.