So I was browsing JTR’s site today, and noticed that the cap 4000ulf has nearly identical dimensions to the ported box I’m considering, yet has a 10hz tune and dual woofers.
If they can build and market a setup like that, I can certainly try one.
Instead of putting all the eggs in one basket, I’m going to build multi tune boxes for the HST’s.
External dimensions 36x42x20, 10cu net.
3x 5.67x5 ports, 60” total length.
All ports open: 19hz
One port blocked: 15hz
Two ports blocked: 11hz
Port velocity gets stupid at 11hz, but apparently JTR gets away with it, and they use dual woofers.
Anyone see any issues with this plan?
Only issue I see is first port resonance is at 115hz.
I should be able to cross low, since I’ll have devastators and v3’s with pro drivers pounding the midbass.
I could drop the ports to 4.5” and get it to 130hz, but velocity goes up of course.