I present you port flares made out of fiberglass, to fit Schedule 40 PVC pipe. You only need the pipe and flares, no other connectors or rings to fit everything together. The inside of the pipe is flush with the inside of the flare.
These have been a constant development starting 3 years ago when I started building them. An results on the meter speak, in quite a few installs adding flares gained 1.8-2 dB on the TL.
The come in various flavors: raw (no paint, just smooth interior), primered inside, outside, both inside and outside, flanged or not. If you want any combination ask and I shall deliver.
$75 for a pair of 8" flares, raw
$90 for a pair of 10" flares, raw
Primer inside: $10 / pair
Primer outside: $10 / pair
Mounting flange: $5 / flare.
Prices are shipped. Payment by Paypal only.
Please keep in mind 2 things:
These ship from outside the US and it takes ~10 days with Priority shipping (tracking included).
I build flares in my spare time, after office hours. So if I don't have flares in stock it is going to take a few days (depending on the exact order) to build them.
Raw 8" and 10"
Regular 8" over flanged 8"
Backside view, the inside of the lip is flush with the inside of the pipe:
Flanged 8" primered
Other pictures (painted, installed etc) available on request