[sdiy] Slightly OT: really loud but light weight speakers

[harrybissell]

Hi Joris...

a horn driver would be less than useless without a horn... and for
a 500Hz cutoff it will have to be a very large horn (just guessing
maybe 4" x 10" at the mouth... with no horn it will sound really
sick (not in a good way)

I'd go with several small tweeter horns and live with the 2KHz
cutoff. My initial idea was to suggest you use two horns, and beat
two high frequency oscillators... the resulting sum and difference
tones would be very loud and very obnoxious... make the other
bots wish they were dead...

H^) harry

Joris wrote:

> John, Peter, Oren & Stephen: thanks for the suggestions!!
>
> Finding a loud horn with a rolloff under 2kHz wasn't easy, but I
> managed to find a horn driver with a freq. range of 500-18kHz:
> http://www.etronics.com/product.asp?stk_code=pylpdb512
>
> Any idea if this thing would be much quieter if we didn't attach a
> horn to it? The amount of space in the bot is quite limited as well...
>
> Joris