See the original thread on our forum where I posted a response to your question: B-DEAP Loading Explanation
|Originally posted by hometheaterguy
I don't know if it would lower the F3, but if the sub(s), center and mains where keep on the same plane (alignment) and the mains on-axis (the center could be recessed and the mains towed) flushing a horn loaded cabinets would not create problems.
Physical alignment of the subwoofer relative to the mains is a waste of time, and in fact is incorrect due to the group delay inherent in any subwoofer, which is then compounded with the delay resulting from the low pass filter employed in the bass management. If you actually measure the acoustic output, the sub will always be "late to the party." You can better adjust for this by telling the processor the subwoofer is as far as the arrival of sound indicates, regardless of physical position. What the processor does in this case is further delay the mains to match the arrival of the subwoofer... Or at least that's what it is supposed to do! :mad:
In the case of the B-DEAP-32 there will be an additional 7-12' of delay due to the horn path length and the orientation of the subwoofer. Correcting for this is part of the calibration process. Properly accounting for this can be beneficial to most any system, not just with the B-DEAP. We noticed a significant improvement in Anthony's system(mentioned in other threads) with a ContraBass.