Check out this 369lb. Subwoofer!

[Steve Gonzales]

Non-JBL , but interesting to see never-the-less.

http://www.mtxaudio.com/caraudio/pro...jackHammer.cfm



Here it is in action:

http://www.youtube.com/watch?v=pJ33S...earch=speakers

[Maron Horonzakz]

That is part of the new JBL K3 S99000

[Steve Schell]

Naw mate, that's not a sub... this is a sub! 128 cubic feet of pure sonic bliss. 110dB average sensitivity from 20 to 70Hz. at box exit, still 100dB at 15Hz. All from one li'l ol' Altec 515-16G. Note that the response plot extends to 10Hz.

Actually this was my first horn subwoofer project, built about four years ago. 15Hz. exponential flare front horn, 20 foot path, 16 cubic foot back chamber. The latest one is similar but reduced in size to a dainty 100 cubic feet or so.

[Steve Gonzales]

Ooh la-la, that must be a treat to witness Steve!

[JBLnsince1959]

Naw mate, that's not a sub... this is a sub! 128 cubic feet of pure sonic bliss. 110dB average sensitivity from 20 to 70Hz. at box exit, still 100dB at 15Hz. All from one li'l ol' Altec 515-16G. Note that the response plot extends to 10Hz.

.

OH MY GOD.......... that's amazing...

[Steve Gonzales]

I am a HUGE Altec fan. I imagine if Steve Schell invests that much time and effort, it's gotta be very musical, even at 16 hertz-so -good, yeah?

[Ian Mackenzie]

Steve,

Is it true Don has not been quite the same since his last visit?

Ian

[spkrman57]

Just goes to show for true LF response, there's no substitue for cubic inches, or in this case "cubic ft"!

Ron