Quote:
A OB or Ripole sub with a 15" in a cardioid enclosure teamed with a large waveguide would be CD below the Schroeder frequency. Originally Posted by LTD02 
"When the woofer is chosen judicially, the near directivity of the woofer, which starts at omni at its lowest range, narrows to match the directivity of the WG at the woofers upper end making a matched directivity handoff. Note the woofer itself does not have constant directivity throughout its passband."
right. this is just letting the horn cover the territory where the driver would normally go from omni to beaming.
instead of letting the woofer cover the range where it goes from beaming to omni, which for a 15" is say from 1khz to 500hz, just let the horn do the same thing, it will go from beaming (holding its nomnal pattern) to omni (losing directivity control).
i think the reason that it isn't done this way more frequently is that a 500-600hz crossover point is a litle low for something like most 1" c.d.'s such as the dna360 and 3" diameter diaphragm compression drivers used to be EXPENSIVE, but with the ba750, the cost makes it a possibility for more folks to experiment with and it should be fine to cross in that low range (I THINK).
"When the woofer is chosen judicially, the near directivity of the woofer, which starts at omni at its lowest range, narrows to match the directivity of the WG at the woofers upper end making a matched directivity handoff. Note the woofer itself does not have constant directivity throughout its passband."
right. this is just letting the horn cover the territory where the driver would normally go from omni to beaming.
instead of letting the woofer cover the range where it goes from beaming to omni, which for a 15" is say from 1khz to 500hz, just let the horn do the same thing, it will go from beaming (holding its nomnal pattern) to omni (losing directivity control).
i think the reason that it isn't done this way more frequently is that a 500-600hz crossover point is a litle low for something like most 1" c.d.'s such as the dna360 and 3" diameter diaphragm compression drivers used to be EXPENSIVE, but with the ba750, the cost makes it a possibility for more folks to experiment with and it should be fine to cross in that low range (I THINK).
I've seriously been thinking about giving this a try, but can't decide what to do north of the 15". Originally, I wanted a SEOS 24, but that idea was shot down by a few people I've spoken to. A SEOS 15 or 18 would be a better idea, then was to do north of there, if needed...
