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Precision Port 4" Flared Speaker Cabinet Port Tube Kit

Brand:| Model: PSP4-BKHT
Overview
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.
Part # 
268-352
Weight: 1.64 lbs.  
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List Price$19.99
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Part # 268-352
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Product Details

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!

To calculate the proper port length for your cabinet and tuning, use Precision Sound Products' Port Length Calculator.



Precision Port 4" Flared Speaker Cabinet Port Tube Kit
  • BrandPrecision Sound
  • ModelPSP4-BKHT
  • Part Number268-352
  • UPC844632046797
  • Product CategorySpeaker Port Tubes
  • Unit of MeasureEA
  • Product Rating
    (57 Reviews)
  • Weight1.64 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Precision Port 4" Flared Speaker Cabinet Port Tube Kit
in the Speaker Port Tubes product category.

Reviews

Precision Port 4" Flared Speaker Cabinet Port Tube Kit
Precision Port 4" Flared Speaker Cabinet Port Tube Kit is rated 4.7544 out of 5 by 57.
Rated 5 out of 5 by from Easy to use/ durable portBought this port for a custom ported box that goes behind my back seat of my 2008 tacoma double cab. I made the base depth of the box to be 8 inches and the port flare diameter is about 7.25 so it was cutting it kind of close. I probably should have gone with a 3 inch port so I didn't have to modify this one. This port is working great so far. I used standard PVC glue to hold it together. Running a 10" Alpine Type R at 500 rms and I have to port tuned to about 39 Hz. I cut the port to an overall length of 16 inches. Definitely go with a flared port, it sounds awesome in my truck.
Date published: 2014-12-01
Rated 5 out of 5 by from port noise! what port noise?these ports does an excellent job of bringing out some smooth,clean,clear and loud bass.
Date published: 2014-10-12
Rated 5 out of 5 by from Doesn't play well with Dayton portsPrecision and Dayton ports of the same size do not interchange, such as I need two 26 inch long ports and have to use a 90 at about 14 inches. I also bought Dayton 4" 90's and the lengths assuming they'd work together. They don't. So with some glueing and piecing together, I've managed to make what I need, but the two ports are different, so don't make the same mistake I did. Other then that, it's great and Parts Express always get's me what I need fast.
Date published: 2014-10-11
Rated 5 out of 5 by from Awesome productI used two of the 4 inch ports an built a sub enclosure for a local stereo shop and they were amazed at the way it sounded
Date published: 2014-06-01
Rated 5 out of 5 by from Flared PortExactly what I needed! No 'huffing' at all and made a huge difference in sound quality! Highly recommend
Date published: 2014-02-23
Rated 5 out of 5 by from As advertised, good fitment, good documentationThis was exactly what I needed to finish my sub build. The parts fit together perfectly, and the necessary calculations are provided in case you don't have a box design program or something else.The only niggle I have is that it would be really great if they included a small packet of PVC adhesive, as this is not something most people keep around. It would save some folks a trip to the store for maybe $1 additional cost. It's a very minor gripe.Great product!
Date published: 2013-06-07

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Precision Port 4" Flared Speaker Cabinet Port Tube Kit

do the flared ends add length? so if I need a 15" long port i'd cut the 17" long tube to 15" to make a 15" port or do the flared ends add length?

Asked by: ParkerN
Yes the flares do add usable length to the port. We recommend cutting the tube itself 5" shorter than the design length calls for for the same tuning frequency once the flares are added.
Answered by: MattP
Date published: 2014-12-17

I need a 10 inch long port can I use two  5 inch ports for the same results?

Asked by: jtwig
No, two ports that add up to 10" will not give you the same results as a single 10" long port. You can contact our tech support to model port dimensions and box volumes if necessary.
Answered by: MattP
Date published: 2014-12-12

How does the flare affect the overall port length. I know back in the day we used 0.5x the diameter for the length of the flared piece. For example, if using a 3" port, and plans called for a 15" port we would cut the tube to 12". Is that true here also?

Asked by: Special_K
It really depends on the flare itself, but in this case that rule can apply without a problem.
Answered by: MattP
Date published: 2014-11-11

what is the displacement of your 4 inch diameter flared port tube,, I was going to put it in a subwoofer box an I need to know so I can calculate my internal volume

Asked by: bobby35
We can help calculate that for you. The displacement will depend on the length of the port. If used as the full 17 inch overall length, the displacement is 0.14 cubic feet.
Answered by: Chrisf
Date published: 2014-10-03

What difference does the inside flare make. Cause I can't use it in my situation. Unless I cut the port really short. And I do not want that. It's for a 18 so a lot of air will be moving.

Asked by: derek82
Not adding the rear flare could add slight chuffing or unwanted port noise but it will allow for a shorter port tube.
Answered by: MattP
Date published: 2014-08-11

how short can the tube be ?

Using the port calculator for my speaker cabinet project the difference is only one inch .Is this enough to attach the two flares to ?Is there a minimum tube size requirement to adequately attach the flares together with the pipe ?I can't go to a smaller port size
Asked by: Smokey Lynx
The shortest affective port length you can have is with both flares coupled together (excluding the tube completely) and this will result in a port length of roughly 3-1/2", not including the flared ends.
Answered by: MattP
Date published: 2013-07-29

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