Search engine listings and many threads on various discussion forums were scoured to bring you this summary
If you know of any different brands, or suppliers, particularly in Australia, let me know and I'll add them to the list
- You can find flares to suit port diameters of 2, 3, 4 and 6 inches. The 6 incher's have been hard to find, but this has been remedied with PSP's new arrival.
- Most flare kits consist of a pair of flared ends and a straight section of pipe. Some ports are one piece, and some have a centre tube that is flared rather than straight
- The flare radius also varies. Cheaper varieties often have a flare radius of around 10mm, whereas the better ports are around 30mm
- Most ports have a mounting flange - some are drilled for screws and some are glue-in or press fit
- Some kits have a smaller flare on the end that goes inside your box. This makes it possible to mount the port after the box is completed
Precision Sound Products - USA
PSP's new 6 inch offering
The 6 incher is available through Thriller Audio for around $38 US
The 2, 3 and 4 inch sizes are also sold by Parts Express - USA
As used in SVS subwoofers
Flare radius for the 2, 3, 4 inch ports is around 30mm or 1-3/16"
The 6 incher apparently has a smaller flare - around 24mm or about 1"
A nice touch is that the underside of the outside flare has indents where you would need to drill for screw mounting. If you choose to just glue in, you don't have unsightly holes
Just for interest, here's details of PSP's patent application
Note that Parts Express also sell the Dayton Create-Your-Own Flared Port Tube System. I don't know what the flare radius is on these, but they have a 90 degree bend available. From the picture, it looks like the internal bend is a hard 90 degrees, so it's not going to be as good as a gentle bend, but would suit those needing an off-the-shelf solution.
If you are happy to do a bit of extra work, you can use a more gentle PVC plumbing bend with the more well-regarded PSP flares, as detailed in this build thread at Home Theater Shack
PSP's new 6 inch offering
Precision Port
in diameters of 2, 3, 4 and 6 inchesThe 6 incher is available through Thriller Audio for around $38 US
The 2, 3 and 4 inch sizes are also sold by Parts Express - USA
As used in SVS subwoofers
Flare radius for the 2, 3, 4 inch ports is around 30mm or 1-3/16"
The 6 incher apparently has a smaller flare - around 24mm or about 1"
A nice touch is that the underside of the outside flare has indents where you would need to drill for screw mounting. If you choose to just glue in, you don't have unsightly holes
Just for interest, here's details of PSP's patent application
Note that Parts Express also sell the Dayton Create-Your-Own Flared Port Tube System. I don't know what the flare radius is on these, but they have a 90 degree bend available. From the picture, it looks like the internal bend is a hard 90 degrees, so it's not going to be as good as a gentle bend, but would suit those needing an off-the-shelf solution.
If you are happy to do a bit of extra work, you can use a more gentle PVC plumbing bend with the more well-regarded PSP flares, as detailed in this build thread at Home Theater Shack
2loud4u - Canada
PNR stands for "Port Noise Reduction"
Flare radius is around 30mm or 1-3/16" which is larger than the PSP
They're only lisenced to sell to North America
If you're elsewhere, you can get them from their Austrian partner
Here's a flare-it comparison between the 6 inch Aeroport and the PSP port, showing an improvement of around 3 m/sec in usable velocity
6 inch PNR Aeroports
imported from Europe. $44.95 CanadianPNR stands for "Port Noise Reduction"
Flare radius is around 30mm or 1-3/16" which is larger than the PSP
They're only lisenced to sell to North America
If you're elsewhere, you can get them from their Austrian partner
Here's a link to the Aeroport user manual - 170kb PDF 
Here's a flare-it comparison between the 6 inch Aeroport and the PSP port, showing an improvement of around 3 m/sec in usable velocity
Ljudia - Norway
Flare radius is around 30mm or 1-3/16"
These used to be available in the US from Lightning Audio but they're no longer listed on their website
The picture suggests that they're available in colors
PNR Aeroports
in port diameters of 3, 4 and 6 inchesFlare radius is around 30mm or 1-3/16"
These used to be available in the US from Lightning Audio but they're no longer listed on their website
The picture suggests that they're available in colors
Hi Fi Service - Italy
This Italian site is offering Aeroports in 3, 4 and 6 inch sizes
The interesting thing is that they offer the 4 and 6 inchers in a clear plexiglass variant as well as the standard black
There is no good technical description, so it's hard to verify the flare radius, however the use of the Aeroport name suggests they're made under licence, so it should be around 30mm or 1-3/16"
The interesting thing is that they offer the 4 and 6 inchers in a clear plexiglass variant as well as the standard black
There is no good technical description, so it's hard to verify the flare radius, however the use of the Aeroport name suggests they're made under licence, so it should be around 30mm or 1-3/16"
Acupower - USA
After a break of some time, Acoupower is back. If you absolutely need the largest flares on the planet, these babies are for you!. Spun aluminium ends with a heavy duty cardboard tube
7" Diameter Ports incl. 7" I.D., 20" long tube
$130.00 Semi Gloss Black Powder Coating on the Flares
$115.00 Flares raw (Aluminum)
10" Diameter Ports incl 10" I.D., 17" long tube
$135.00 Semi Gloss Black Powder Coating on the Flares
$120.00 Flares raw (Aluminum)
7" Diameter Ports incl. 7" I.D., 20" long tube
$130.00 Semi Gloss Black Powder Coating on the Flares
$115.00 Flares raw (Aluminum)
10" Diameter Ports incl 10" I.D., 17" long tube
$135.00 Semi Gloss Black Powder Coating on the Flares
$120.00 Flares raw (Aluminum)
Jaycar - Australia
Flared Ports. 58mm * 120mm long. Small flare of approx 10 - 15mm. Press fit / glue-in
Adjustable length Ports - not flared. 50mm, 66mm and 110mm. Mounting flange has 4 screw holes
Bent port - 45 degree bend, unflared. Extend with 90mm stormwater pipe
Don't list any flares with a decent radius
Flared Ports. 58mm * 120mm long. Small flare of approx 10 - 15mm. Press fit / glue-in
Adjustable length Ports - not flared. 50mm, 66mm and 110mm. Mounting flange has 4 screw holes
Bent port - 45 degree bend, unflared. Extend with 90mm stormwater pipe
Lautsprechershop - Germany
Jetset
70mm and 100mm dia variable length ports , unknown flare radiusJetline
- fixed length flared port with slightly tapered tube 30-26mm dia , 45-39mm, 60-54mm, 72-67mm, and 100-94mm diametersVisaton BR
19.95 - 110mm dia 3 piece solution, unknown flare radius
Spiral Fittings of South Carolina - USA
In the air conditioning industry, flares are known as "bellmouth" fittings
A novel approach to flaring would be to use fittings and tubes from this source
They're available in steel or aluminium, with diameters and flare radii up to sizes well beyond what even the most enthusiastic the speaker builder would require
Their 6 and 10 inch bellmouths have flares of 2 inches in radius, which is better than anything you'll find in the audio industry
Some damping material glued to the ouside of your port should minimise any ringing that could occur due to the metal construction
A novel approach to flaring would be to use fittings and tubes from this source
They're available in steel or aluminium, with diameters and flare radii up to sizes well beyond what even the most enthusiastic the speaker builder would require
Their 6 and 10 inch bellmouths have flares of 2 inches in radius, which is better than anything you'll find in the audio industry
Some damping material glued to the ouside of your port should minimise any ringing that could occur due to the metal construction
Didn't find what you were looking for?
As you can see, there are no suppliers of properly flared ports for Australia. Until someone starts importing them, I can make available one-piece ports or flared ends from my molds. I'm also able to supply huge ports for SPL competitions - One-piece, 10inch dia, 40mm flare each end. See my flares for sale page for detailsFor those who live in the USA, one-piece ports are available from a DIY'er over there. Les sells six inch ports up to 18inches long with a 25mm or 30mm flare. He generally sells them via ebay. Drop him an email
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