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In Reply to: RE: matching driver watts posted by SOUNDY on June 01, 2016 at 13:29:05
250hz is about the equal power point, half above, half below.
Assuming the full-range driver is 3dB more efficient, a 100W woofer paired with a 50W full-range driver would handle about 200W program material.
I've used a 10W full-range driver with a 100W woofer when crossed at 800hz/6dB, and not had issues. The full-range driver had good output down to about 200hz due to the shallow slope of the 6dB network. You will need a notch filter to keep the impedance flat on the full-range driver, otherwise the crossover will not work properly.
Follow Ups:
ok, so i could use say a 20-30w fullrange driver possibly with a 150w woofer
if it was 3db more sensitive than the woofer ?.
Probably, but I would try it at 400hz, and use a notch filter on its resonance peak.I used a 94dB woofer section (dual 8's) with a 97dB full-range (attenuated 3dB in the network).
Edits: 06/01/16
i think thats what i'do seeing the choice of small fullrange drivers around.
would i be able to get away with not having a notch filter if the resonance is much lower than the xover point of 400hz ? at 400hz there doesn't seem to be any output near the resonance point but im new to this so cant be sure.
"would i be able to get away with not having a notch filter if the resonance is much lower than the xover point of 400hz ? "
No.
It will work fine without the notch filter, it will just have a big peak at its resonant frequency.
What kind of drivers are you considering?
hi hope your still there,
i havent got my email alerts activted so i didnt see your reply.these are the woofers ive been looking at, sealed of course. i have seen a few fullrange drivers but only one is sensitive enough.
also this woofer too
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