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This relates to my last question:
My interim system sounds OK, using a Fostex FT17H (super tweeter) with a JBL 2445J (heavy, loud, optimised for ~400-4kHz).
I'm using eq to make up for the up the ~10dB lower efficiency of the Fostex.
To move this outdoors, with a smaller (battery powered) amp, I'd like to get more efficient bullet tweeter. I'd also like it to be indestructible, so I can simply leave it there.
Would the B&C DE35 be good for this (since Mylar is unlikely to rust)? Any other suggestions?
I suggest the Selenium ST100, phenolic diaphram, 105db/watt, 2000-20,000 hz, plastic case. I can attest that they are very good sounding and $19.95 at Parts Express.
> Would the B&C DE35 be good for this (since Mylar is unlikely to rust
Aluminum, titanium and phenolic don't rust either, so that's not a concern. The main issue is keeping bugs, critters and rain out of the horn.
if there are any decent piezo cheap (?) I'm guessing 103dB as below years ago with a rat-shack meter and vtvm - DJK would know more. Brian Steele mated GRS to Goldwood 1016 knockoffs and got smooth response but I don't know the cost in sensitivity (?)
waterproofing a piezo cone - ? Damar? - hair spray ?
LeSon piezo are quite sensitive as have built-in stepup coils - I'd have to compare one to say an Audax/Polydax bullet tweeter for a rough idea.
I like the way you're thinking, but I'm not strictly after 'cheap' solutions. I was looking at the B&C because it seems like decent value and an OK match WRT sensitivity and beamwidth.
I just wondered if people might say 'driver X is just as good but more weather proof' or 'driver Y is just as good, with slightly better HF dispersion'.
I'd like to keep it simple (about 6 watts, one 12V car battery), so:
1) the further > 100dB watt I can get, the better
2) environmental ruggedness matters, power handling ruggedness does not
the old Motorola KSN1016 with 5029Hz sine had about 1/4 of one percent distortion at 103dB/1 meter. Eminence ASD1001 might work if you could find a tight pattern horn vs the now more common constant directivity waveguides.
Bill Woods has said good things about that B&C tweeter.
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