I have often seen designs where twin woofers are mounted with one facing backward for distortion cancellation. The question is how high up can you cross such an arrangement before the higher frequency range is compromised due to basket interference?
If you are Ohm it runs up to the tweeter x-o. Best done with alloy baskets with skinny struts and Neo magnets. You know, expensive. I have played with this it is better than people think but there's a visual aspect that bugs a lot of us. What it does do is alter the directivity of the bass-mid as the frequency rises. Anecdotally I believe the dispersion match at crossover is improved. May a smart person can flip a woofer and do that fancy display thing that is beyond me.
Go with the SEAS Exotic for only $778.40 and leave the price tag on! That's the ticket!
As for the distortion cancellation it seems more pronounced in lower end drivers that do not have symmetrical excursion behavior.
Go with the SEAS Exotic for only $778.40 and leave the price tag on! That's the ticket!
As for the distortion cancellation it seems more pronounced in lower end drivers that do not have symmetrical excursion behavior.
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General rule: interference starts at wavelength = 8 x dimension of obstacle presented to the wave.
For design purposes you can probably go another octave higher before the response becomes too unruly.
For design purposes you can probably go another octave higher before the response becomes too unruly.
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As a general rule it's a function of the driver's highest useful XO point [~90 deg], which is too acoustically large for typical woofer bandwidths to reflect off its frame/motor.
Where you may have some concerns though is if there's an unobstructed OB mid woofer and/or lower mids acoustically nearby.
GM
The rear response might be different for each driver depending on how closed the basket is, size of basket windows, etc.
Why don't you just measure the response with the driver mounted backwards?
Why don't you just measure the response with the driver mounted backwards?
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