18"/21" Folded horns

my home made quakes if that counts

BASSHORSE wrote: my home made quakes if that counts

What can these do realistically in pairs/4s?

SBHs drop about 10Hz lower than WSX. WSX is more efficient on the other side and requires less boxes in a stack to work as a proper horn.
The EAW Big Bertha could be what you are looking for?!
Personally i prefer 15" FLH over 18" as the lower cutoff is determined by the horn and the stack size but not the chassis size.
If you take the exactly same horn with lets say ~ 1m x 0.6m mouth area and put either a suited 21", a 18" or a 15" into it, the response curve will be about the same! Only thing that will change is the dispersion at a given input voltage. But a proper horn stack wont exceed ~10mm of xmax anyways, even if driven with 1500w or the likes, so with the same power handling on all 3 chassis sizes, you end up with (nearly) no difference in max SPL.

That said, this is the theory. In the real world, where you drive your chassis beyond xmax because compression in bass range is considered as "heavy" and you dont build big enough stacks (like 2 bins per side), the 21" will most likely be measured with a fe extra dB max SPL compared to the 15". But not anywhere as much as it would be in a ported enclosure!

Thanks for feedback so far.

Reason I asked about 2x per stack, is because I wanted a realistic comparison with Scoops, without saying it.

Premium build Scoop, with premium high BL driver, will easily do 40hz in pairs, and cover 500 ppl, with 2x stacks of 2x, given right sub amp, processing.

Pairs is not a typical application for folded horns, but is there an 18" folded horn, that can outperform Scoops, in this configuration, over 40-80hz?



Edited by levyte357- - 16 December 2016 at 2:27pm

In same venue, have heard stack of 4x V18-1000 loaded Looneys, as with 2x other Scoop sounds.

Would say 55hz up the Looneys had it, but 38-50hz was severely lacking, & noticable, actually detracting from enjoyment of the music.

Will SBH really do better than this?

the keystones are supposed to be very very nice, planning on knocking one up soon..