intotubes Posted October 31, 2005 Share Posted October 31, 2005 http://www.sonicflare.com/archives/eminent-tech-trw-17-the-most-powerful-subwoofer-in-the-world.php Flat response down to 1Hz. Quote Link to comment Share on other sites More sharing options...
SteelerFan Posted October 31, 2005 Share Posted October 31, 2005 [:^)] Quote Link to comment Share on other sites More sharing options...
DrWho Posted October 31, 2005 Share Posted October 31, 2005 $12,000 for a little fan?!? Flat down to 1Hz is nice, but it doesn't get up beyond 19Hz.....and how loud does it go? A good infinte baffle system should be able to dig down to 10Hz @ 130dB for under $4000 (including amp and processing). I like low bass, but seriously....what kind of information is being stored at 5Hz? That's seriously slow enough that you would hear it as just a slow change in amplitude in all the other frequencies. Quote Link to comment Share on other sites More sharing options...
Olorin Posted October 31, 2005 Share Posted October 31, 2005 Wouldn't 130 dB @ 10 Hz likely do serious structural damage and give you the urge to void your bowels? The IB I have in mind ought to do 103 @ 10 Hz and 112 @ 20 Hz and come in at just under $700. Naturally this is in model-space and doesn't account for room gain or peaks/nulls, but still -- the CBR looks pretty decent there. Quote Link to comment Share on other sites More sharing options...
DrWho Posted October 31, 2005 Share Posted October 31, 2005 so what drivers and amp are you looking at? You should totally make a thread so that we can all drool over it. Btw, the "brown note" was debunked on myth busters, but I'm sure structural damage would be a concern. The point isn't to turn them up that loud...just to have moderate headroom for the occasional explosion [] Quote Link to comment Share on other sites More sharing options...
thxsubwoofers Posted November 1, 2005 Share Posted November 1, 2005 It doesn't look like a subwoofer in the picture. LOL [8-)] Quote Link to comment Share on other sites More sharing options...
ironwoods Posted November 1, 2005 Share Posted November 1, 2005 Hey, this is a no brainer to sneak past the wife, however the bank statement might raise an eye brow. [] Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted November 1, 2005 Share Posted November 1, 2005 I believe that the "fan" has to be set up like an IB also. Quote Link to comment Share on other sites More sharing options...
CAS Posted November 1, 2005 Share Posted November 1, 2005 Yes, essentially IB fan, however I'm not sure what scientific/physical properties set these fans so much apart from other similarly powered metal fans with much larger blades. I've heard how large industrial fans sound in large room, however it seems like it would take a wind tunnel of a fan to shake walls...and the resulting breeze would knock over your Khorns. Strange. But may have to get one in the future. Quote Link to comment Share on other sites More sharing options...
Olorin Posted November 1, 2005 Share Posted November 1, 2005 so what drivers and amp are you looking at? You should totally make a thread so that we can all drool over it. Well, I'm not sure how drool-worthy it will be. I've already bought the amp -- an H/K PA-2100 making a whopping 65 W/ch. It's running my Chorus IIs now with my AVR-235 behaving as a prepro. Sounds pretty nice. Drivers will either befour each of the AE IB15 drivers or the Dayton IBs. 32.5 watts will bottom (or nearly) each of those drivers at about 8 Hz IIRC, so it ought to do just fine. Add $100 for a BFD and another $100 for a meter and some wood, and voila, the lowest cost for getting 112 dB @ 20 Hz I've been able to find. Unfortunately it will be a while before I get to find out if it will work as predicted, but a guy can dream in the meantime. Btw, the "brown note" was debunked on myth busters, but I'm sure structural damage would be a concern. The point isn't to turn them up that loud...just to have moderate headroom for the occasional explosion [] Oh, I know about the Mythbusters episode. Just the same, I've read of people experiencing nausea and disorientation in the presence of infrasonics. There was a thread on the IB forum where a guy tested a 7 Hz note and everyone in the room felt sick and his girlfriend actually threw up . . . another guy said he stuck his head in the manifold while it was playing a 5 Hz tone and he didn't feel right for the rest of the day. So yeah, I was being a little facetious, but there's a grain of truth in there, at least if those people are believable. :-) MODERATE headroom? Pish tosh. ;-) Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 1, 2005 Share Posted November 1, 2005 Did you know that if you restricted the cabin volume behind those drivers to 10 cubic feet per driver that you can pump 100 watts into them and not sacrifice much low frequency extension while massively controlling the excursion of the drivers? But then you'll need a better amp or at the very least bridge the one you plan to use (you only need 1 channel of amplification anyway). So with 4 drivers you would merely need to build a big 40 cubic foot box...nothing fancy but just enough to keep the pressure in. The cool part is this will help with noise rejectrion throughout the rest of the house and the neighbors (depending on where the IB's will be located). Quote Link to comment Share on other sites More sharing options...
Olorin Posted November 1, 2005 Share Posted November 1, 2005 Nah, I'll vent into the room behind the HT . . . an 800 ft^3 box. No sacrifices required. :-) Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 1, 2005 Share Posted November 1, 2005 I dunno....after room gain you could get 120dB down to 10Hz with the "smaller" volume behind the drivers [] Of course you will need a 400 watt amplifier (I wasn't clear before about the100 watts per driver) Quote Link to comment Share on other sites More sharing options...
Olorin Posted November 1, 2005 Share Posted November 1, 2005 Sure, but then I have to buy a 400 W amp and build a 40 ft^3 box . . . and Unibox says I have the same output at 10 Hz but about 4 dB more at 20. It's all about the compromise. :-) Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 1, 2005 Share Posted November 1, 2005 And you definetly thought it through [] I still wanna see pictures when you get her up and running...if you get her done soon you will probably be the first on the board with an IB! Btw, sorry for the thread hijack. Quote Link to comment Share on other sites More sharing options...
johnyholiday Posted November 1, 2005 Share Posted November 1, 2005 Just get an ultrasonic kidney stone smasher, of course there's medication that has to be taken ,an a screening process looking for stone fragments, after treatment\listening sessions, to clear the kidneys,"Too Rolling Stoned" Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted November 1, 2005 Share Posted November 1, 2005 And you definetly thought it through [] I still wanna see pictures when you get her up and running...if you get her done soon you will probably be the first on the board with an IB! Btw, sorry for the thread hijack. 1'st?????? Here's mine, but I doubt I'm the first. http://photobucket.com/albums/y290/cecaa850/ Sorry about the low res pics, they're from a disposable camera that was then scanned. I feel a nice digital camera coming on for my birthday. The drivers are the Avalanche 18's driven by a Behringer EP-2500. Carl Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 1, 2005 Share Posted November 1, 2005 I don't see how on earth someone would think mounting those massive motors to a couple of 2x4 framing members would be a good idea. Bet he's patching drywall cracks right now. EDIT - never mind, I see in the last couple of shots that the framing was beefed up. Maybe this would work okay. END EDIT M Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 1, 2005 Share Posted November 1, 2005 Ok fine, second...I've never seen your pics before...very nice. Have you had a chance to get some measurements on your system? If I were to go with an IB I would be definetly looking at the avalanche as well. They're a bit more costly than the AV or Dayton IB15's but definetly worth every extra penny. WinISD tells me you can push 130dB down to 10Hz with 2000watts of power [H] Quote Link to comment Share on other sites More sharing options...
Olorin Posted November 1, 2005 Share Posted November 1, 2005 The moving mass of an Avalanche 18 is only 369 g. There is plenty of structure there to take that. :-) Quote Link to comment Share on other sites More sharing options...
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