Epique 5.5” with dual PR

Horn response nails it again (Fb)

Sounds pretty good, but it’s a mouse fart compared to the tapered pipe I put the other one(7” version) in.
 

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You are comparing a (very) undersized 6L box with an Fb of 32Hz (8 Hz below it's driver's 40Hz Fs) to a 40L box with an Fb of 34Hz using a driver with an Fs of 35Hz and 40% more displacement.
6L box is very cool and a good effort. Can you retune it to 40hz? Would be interesting to see how the driver goes in native mode with an undersized box. The logitech 7" driver is mental in 15L, so a 14L box for such a small driver just seems a waste. I think that Epique would make for pretty cool looking and sounding W-FR-W in a tall and slim desktop monitor

I have an OEM PR much like the Epique with the same woven carbon being leaky issue. Mudhole carries a product called permagloss that can fill this up without much of a penalty. A couple of wipes with a cloth will do it, it wicks into the gaps
 
A (small) step in the right direction, but the box is still too small for the tuning achieved with no added weight.
5 Hz.png

If the impedance peaks either side of Fb were closer to equal, ~8 ohm, the frequency response would roll off a lot less at Fb.

How much difference in response did raising the Fb by 5Hz make?
Have you pushed the PRs to (by hand or with driver) Xlim yet?
 
I like Messing with big vented boxes (1/4 wave stuff) . These aren’t as exciting because my nuts aren’t shaking at 30 hz 😝

I’ll put one of the tangband w5-1138 in here with those pretty PR cones and see about making another tapered pipe for this one ?
 
make an FT30 loaded with an 18SW115, face it to one of your living room corners 1feet from it,

feed it 2kw and recline in to your sofa at 6 feet from it
watch jurassic park on your 100" sony bravia super OLED 8k screen

your eyes will be overflow with tears of joy
meanwhile your guts will turn inside out
and the nuts will FELL OFF!!! 😜😜😜
 
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1/4 WL (BP4) becomes (BP6) in enclosed vehicles, so the interior's net Vb needs to be factored into the design for best results IME, so is tough to get right unless the #/size of passengers is constant.