FSP15-BPH: HD15 upto 200Hz

back on track though one of the reasons for liking the usbs et al as far as i can tell is more air being moved around so whilst the kick itself might be more defined theirs less actual punch to go with it would it be completely imposable to get an 18" bph to do a similar upward stretching for that blown away feeling?

I've been thinking about this idea recently.
As the ES18-BPH seems to be favoured for high end extension amongst those discussed, maybe a starting point could be a scaled down version for a 15". I tried this in hornresp, then reduced the rear chamber size further to improve the response a bit. The resluts seemed pretty good.

Another one to look at could be the low section of the xtro, however it only goes down to 90Hz.

im looking forward to a 15" version of the usb??
any ideas
d.

just as a followup post i recalculated the emb15 to meet my driver and goals