On Tue, 29 Oct 2002, FalconWireless Tech Support - KF4HAZ wrote:

*>> > 200W bass speaker mounted at one end of four meters of drain plumbing and
*>> > connected to a car battery through a relay every now and then ?
*>> >
*>> Electronic didgeridoo (sub-bass model)
*>Actually 200W is overkill, a 4 ohm speaker rated for 60 watts RMS would hold up quite well at 12~15 Vdc, but then again with today's rating system a 200w rated speaker is what maybe 5 watts RMS?
*>Seems like the modern rating system is based on how much peak power it takes to instantly blow the speaker.

Me I'd use a dc/dc converter to up the voltage and discharge a 1000uF/350V
cap into the speaker ;-) I did not mention this detail ;-) This has been
tried in the lab (using a normal old speaker box) and it did feel like a
punch in the stomach in a small closed room.

Peter

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