Massive vibration guess?

[Hayden]

What wattage and what sub or subs would you kneed to:

Knock over a bunch of AA batteries standing on their ends in less than 1 second.
Vibrate the crap out of a filing cabinet.
Vibrate a roller door several meters away.
Air pressure moving a piece of paper near a window about 4 meters away.
Reboot and put in protection mode a computer.
Knock the side of a computer case.
Vibrate a draw out of a stationary box.
Knock over a can of freeze spray.
Spin a screwdriver around several times.
Open a door of a stereogram cabinet up stairs on the next floor.
Moving sub box along carpet by its self measurable in feet.
Make a AA battery jump centimeters in the air.
Override the sound of a TV turned up full.
Or even vibrate a 3.5mm stereo plug out of a sound card.

I know the answer, what do you guys think?
What setup would you need?

[xplod1236]

Two AV15s in a ported box with about 1kw of power.

[Cal Weldon]

Hey, now you're talking my language. If I were to do it, I would take my Altec A4's with Selenium PA drivers and a 1kW amp and let 'er rip.

[LightwaveDude]

Since you're talking pure SPL and displacement, I'd say something like the Treo CSX 18. Two of those running full tilt should give a little bit of displacement (though, you'd fry the VC before you ever reached Xmax)

[Cal Weldon]

Forgot to mention, cracked the little window in the shop while testing a while back. Hard to tell the SPL when it's a 1kW plate amp and there's no high end to tell you to turn it down.

[CARTRulz]

Thats what my single snell sub1800 is doing right now running on a 115w amp in an 8.5 cube ported box box, just wait till I get the other one built and get myself the 600w amp I want, hehehehehe.

[Hayden]

Just a mere 65watts rms on one 12” and one 10” in separate sealed boxes. 130 watts rms total power

[Andy Westcott]

Quote:
"Override the sound of a TV turned up full."

That doesn't sound too impressive - the fans on my bloomin' computer do that!

[owdi]

IMO, mechanical vibration is a bad thing. Sounds like you have drivers with heavy cones in lightweight enclosures. That vibration is not caused by sound, but by mechanical energy from the diaphram and voice coil. When the cone moves forward, the magnetic field of the voice coil is pushing back on the magnet. This transfers energy to the basket, the enclosure, and whatever the enclosure is sitting on. People who have built IB subwoofers in their homes get this concept. If you look at IB designs you will notice they almost always have opposite facing drivers. This causes the mechanical energy from the cone moving to cancel, and you can hear bass, instead of hearing your walls shake.

Dan

[CARTRulz]

Yeah but when you play music at 120db, things tend to rattle