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In Reply to: RE: horn tweeters posted by thump on February 21, 2017 at 11:33:33
i don't know where i saw the 15w compression driver, but i did find a bunch rated 25-30w at PE
RCF ND1411-M (25w $120)
http://www.parts-express.com/rcf-nd1411-m-1-neodymium-horn-driver--294-818
Radian 450PB-8 (25w $140)
http://www.parts-express.com/radian-450pb-8-1-aluminum-horn-driver-8-ohm-2-bolt--294-700
Radian 475PB-8 (35w $187!!!)
http://www.parts-express.com/radian-475pb-8-1-aluminum-horn-driver-8-ohm-2-3-bolt--294-702
Peavey RX14 (30w $54)
http://www.parts-express.com/peavey-rx14-compression-driver--294-3236
&
PRV Audio WG2-230Ti dual horn (30w $100)
http://www.parts-express.com/prv-audio-wg2-230ti-two-d230ti-compression-drivers-line-array-waveguide-package--294-2847
so even compression drivers designed for PA use (i still say ANY PA speaker should be able to handle at least 200w minimum) can have ridiculously low rated power. there has to be a formula that converts a tweeter's RMS to "real world use wattage". i can't believe any compression driver is intended for a 35w rated speaker. a home speaker? OK
Follow Ups:
Different manufacturers use different ways of rating the power handling of the drivers. It used to be honest manufacturers used sine wave power ratings. If you look at older driver specs from companies like Altec or EV, the power ratings seem low by today's inflated numbers. You would typically see woofers rated at 20-50 watts, and tweeters rated at 5 watts or so. They were using sine wave power ratings, which gave you a better idea of how much power a driver would handle. Today, most drivers are rated with 'equivalent music power', what ever that is. What they are really saying is the tweeter can handle the power in its part of the spectrum, using the recommended crossover point and slope, when a loudspeaker system is fed with and amplifier of XX power. It really doesn't give you a real idea of the power dissipation capability of the voice coil assembly. Do you really think that dome tweeter will handle 50 watts? Not on your life. Or that woofer will handle 200 watts? Nope. A return to sine wave power ratings would be nice.
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