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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 Portâ„¢ 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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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
    (53 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 4.7358 out of 5 by 53.
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: 2014-02-25
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: 2013-06-08
Rated 5 out of 5 by from Best port ever!!I purchased two of these ports for a custom box. I've always been told that flared ports sound better then jus straight pcv pipe. So i decided to test the difference. I installed straight pipe ports first and listened to it, sounded good. I then installed these flared ports and I was blown away by the difference in sound. It sounded sooo much cleaner, louder, and tighter. I highly recommend if you want a loud and good sounding box.
Date published: 2012-12-20
Rated 5 out of 5 by from Does what it was suppose to doIt tuned my tunes lol. Be careful screwing it in, if you go to far it will break!!
Date published: 2013-03-10
Rated 5 out of 5 by from excellent portThis port is undoubtably strong enough for any build, and long enough for nearly any application. It is also fairly cheap considering I bought 4 of these so I saved the $5 or so but I have the 4 of them 13 inches long firing up along with subs faceing up in an 8.5-9 cubed box, and they knock with no problems at all. Would definitely recommend.
Date published: 2013-03-06
Rated 5 out of 5 by from beats PVC pipe and looks and sounds a lot better tooused 3 of these in a dual 18" subwoofer cabinet with no huffing or port noisethe flares look great and are easy to flush mount for a professional look*tip; instead of using PVC pipe glue just use duct tape so you can change the port length if needed, also I always mount the rear of the port in an internal brace to keep the port from just "hanging" in the box
Date published: 2012-06-25

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

Does a port always have to be inside the cabinet?

What I mean can I put a port outside rather than inside and sill function the same as if it were inside?
Asked by: VusstoppyPro
No the port does not need to be on the inside, it will do the same thing if it were on the outside of the cabinet.
Answered by: MattP
Date published: 2013-01-14

4" tube diameter? And is the max diameter really 7.25 in?

Asked by: Audiophile77
Yes 4" ID and 7.25" OD of the outside flare.
Answered by: mtg90
Date published: 2012-11-18

Does this kit come with the tube itself or just the post ends? What length tube?

Asked by: Vinnie
It comes with a tube and the ends. Usually the tube is 14-16"
Answered by: paragv
Date published: 2011-10-10

Is there a way I can assure the tube will be 16" long?

looking at 2 of these and the tubes needs to 16" long to tune my enclosure to 32 Hz i have 3 10's i am putting in a single enclosure
Asked by: careless
The quick answer to your question is...measure twice. The serious answer is...this kit comes with a 17" tube and two flared ends. Therefore you will need to only cut off an inch of the supplied 17" tube before permanently gluing the two flared ends to your newly created 16" tube.I hope that helps you.
Answered by:
Date published: 2012-01-08

What is the "flare radius"?

I have a program (Flare-it) that tells me if I will have port noise. I'm trying to calculate the "flare radius".
Asked by: Ess OH ELL
Flare radius on the 4" port kit is about 42 mm.That would be 1.65" radius.This is huge as flare-it tells me I need 20 - 25 mm Flare radius most of the time.The flare radius on the internal flare is about the same.
Answered by: Rumble Filldirt
Date published: 2012-08-25

what can i use to make this port 25 inches long

Asked by: andrewb
You could buy 2 kits and secure two lengths of tube together with a solid external collar brace to achieve the necessary legth. You could use some left over tube, slit it down one side, and secure it around the junction of the 2 pieces you are joining with ABS cement. You could even do that twice, one from the top, one from the bottom for a really secure hold.Though, honestly if your tuning requires such a long port length you may want to look at using a smaller diameter port in order to reduce the necessary port length. A 3" port would need to be much shorter to achieve the same tuning frequency.For example with a 1.5 cubic ft box and a desired 28Hz tuning a 4" dia. port needs to be 25.875" long. Whereas a 3" dia. port only needs to be 14" long to achieve the same 28 Hz tuning in the same box.
Answered by: Travis Rysdam
Date published: 2012-07-09

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