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Your cart is empty.Precision Port 4" Flared Speaker Cabinet Port Tube Kit The unique flared-end construction of the Precision Port system enables it to outperform any standard port tube on the market. Conventional tubes suffer from nasty turbulence at the entrance and exit of the port, producing unwanted noise and poor sound quality. The Precision Port system overcomes these problems and as a result can actually produce a gain of up to 3 dB in output! Now you can experience good looks, low distortion, and superior overall sound quality thanks to the Precision Port system. Convenient front screw holes make this tube easier to install than others on the market. Create a port up to 17" long, then glue with ABS glue found at any hardware store. Installation instructions included. Dimensions: 7-1/4" outside flare outer diameter 6-1/4" cutout 6-3/16" inside flare outer diameter. Also available in 2", 3", and 6" diameters. Proudly made in the USA!
Donovan Taylor
2025-08-11 14:58:22
General infoI used this port to create a home theater sub using the Dayton MKIII 15" woofer. For this installation I have the port mounted in the back with the sub facing forward. I can easily say that I cannot hear any port noise. My subwoofer response is quite low, dynamic and smooth. Even at high volume levels I dont hear a hint of the port.InstallationThe product was quite easy to install. 1st cut the port to desired length, 2nd glue together using a strong adhesive ( i used krazy glue) 3rd position then cut out a hole in your sub box for the smaller end of the port, 4th mount using 4 screws ( these are not included).I would recommend this port based on its efficiency, low cost, and ease of installation.
Daniel Honore
2025-04-28 12:41:00
Exactly as described easy to use quality plastics would buy again and I’m a repeat user.
Matthew
2025-04-23 17:13:22
The port is of very high quality. Fit and finish are great. It even comes with a sheet that tells you how to calculate the length to which you should cut the middle tube. The only thing I could find wrong was that the seams inside the port didn't match up perfectly. I would suggest mocking the tube up and sanding down any interior ridges before gluing it together. Sealing the mounting surface with silicone isn't a bad idea either. I used the 4" port in a 2.32 cu. ft. box tuned to 32Hz. My 12" 250 watt MTX subwoofer moves a lot of air and the port is dead silent. Not a bit chuffing can heard. Worth every penny.
Taylor Glesener
2025-03-13 13:16:07
Material is a little thin but it holds up fine with a infinity kappa perfect subwoofer, probably wouldn’t push more than 500 watts rms through it
TheGreatGatsby77
2025-03-01 17:34:49
I bought this to match with an Infinity Reference 1260w sub woofer for a custom build. This port comes with all you need for assembly as well as detailed instructions on how to calculate the length of the port needed. I've had the sub built for a week and am breaking it in easy. Even with under a quarter of rated power going to the sub, this port and box design makes my room rattle. The best part is that it is flared , so there is absolutely no port noise. Works perfectly! Smooth, clean bass!
big jay
2025-02-18 13:19:37
This port is a full 5 stars. So I had to build a custom ported box for a customer consisting of 15" sub n a 2000 jeep wrangler lets just say there is no dang room to work with. Anyway long story short I used this port and the bass is super clean w no port noise. This is definitely a 5 star product and is very easy to use. Box is 2.5 cu ft internal with port and sub displacement and tuned @35hz.Sorry just noticed in pics you cant even hardly see the port haha. You can kinda see it in the top right corner of the last pick
Ethan Donehew
2025-02-15 13:23:56
The rings are the only thing they forgot I just used electrical tape
G. Gonzalez
2025-02-02 13:46:06
So there I was, subwoofer design program in hand, PVC pipes in my head, router at my fingertips... I was going to make my own flared and radiused port. Piece of cake really, its all straight forward. Build up the required thickness of wood, take your router, and a really nice fat radiused (1") round over bit.....By the time you aquire the stuff, and put it together, and then make the radiused flange, you could have earned more money than it cost to buy this thing. And it probably won't be as nice nor work as well.So I just bought it, and sure enough, it was fantastic. I also took the time to assemble it dry and to sand some of the unions to get smoother air flow. Also, I mounted it with 8 screws on the front instead of 4 (yeah, I'm one of THOSE types).Works like a charm. I have a 4 cu.ft. box tuned to 22 hz (home theater), and when it is pumping way down low, all you "hear" or feel rather, is that rumble, no chuffing. I am very please.By using a single 4" flared port like this, I was able to avoid having to use twin 3 inch ports with no flaring. Totally worth the price.
Alex
2024-12-01 11:11:08
Works perfectly with my 600watts RMS 12 inch sub. No port noise Or chuffing. Really easy to tune. Looks great. It saves a lot of deadweight instead of building a slot ported box, Which in my Subaru is a huge bonus. Also on a 3 inch version and it is great as well.
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