free shipping at parts express

Precision Port 2" Flared Speaker Cabinet Port Tube Kit

Brand:|Model: PSP2-BKNT|Part # 268-348
The unique flared-end construction of the Precision Port™ system enables it to outperform any standard port tube on the market. Proudly made in the U.S.A.
In Stock
List Price$14.99
You Save36%
Your Price
Buy 4+$8.80
Part # 268-348
  • Reduces air turbulence to minimize or eliminate port noise
  • Just cut to length, glue together, and install
  • Gives your enclosures a sleek, professional look
  • Mounts in 4-1/4" diameter cutout

Product Details

Precision Port 2" 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.

The 2" model now comes with starter holes on the rear of the mounting flange, allowing the user to decide whether to use 3 mounting holes, 4 mounting holes, or none at all! All you need is a standard twist-drill to make your custom mounting decision. The central tube can be cut to any desired length, with a maximum overall port length of 11". Once the pieces are cut, the system can be permanently bonded with ABS pipe cement. Dimensions: • 5-1/4" outside flare outer diameter • 4-1/4" cutout • 4-3/16" inside flare outer diameter. Also available in 3", 4", and 6" diameters. Proudly designed in the USA!

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

Precision Port 2" Flared Speaker Cabinet Port Tube Kit
  • BrandPrecision Sound
  • ModelPSP2-BKNT
  • Part Number268-348
  • UPC844632046773
  • Product CategorySpeaker Port Tubes
  • Unit of MeasureEA
  • Product Rating
    (17 Reviews)
  • Weight0.75 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 2" Flared Speaker Cabinet Port Tube Kit
in the Speaker Port Tubes product category.


Precision Port 2" Flared Speaker Cabinet Port Tube Kit
Precision Port 2" Flared Speaker Cabinet Port Tube Kit is rated 4.7059 out of 5 by 17.
Rated 5 out of 5 by from My "go-to" portThis port looks and sounds great. For some reason the equation that comes with the paperwork is impossible, but using BassBox 6 pro I got the length I needed and it sounds great. I would suggest using screws and gasket tape as well.
Date published: 2015-03-11
Rated 5 out of 5 by from Great port tube!solid construction, high quality ABS. Included a formula sheet to calculate the proper port length. I'd recommend using the formula sheet over one of the free speaker design programs such as winISD.
Date published: 2013-04-14
Rated 5 out of 5 by from Excellent Product!These are some very well built ports. A must to have the flares to reduce port noise. Excellent quality, a bit pricey, but worth every penny.
Date published: 2013-03-01
Rated 5 out of 5 by from Great productGreat product, high quality, easy to work with. makes any enclsore look good
Date published: 2013-01-04
Rated 5 out of 5 by from It's a flared portIt's a flared port. That pretty much sums it up. Just as a warning, it may be hard to install it since there's no real way to attach the port outside of glue. And the middle tube feels very thin. OK sure, for the materials you definitely get nearly no value for the money, but it's a flared port! It really does make a huge difference in speaker design. In my opinion, it should be illegal not to use one.
Date published: 2012-10-31
Rated 5 out of 5 by from Excellent product for the price!!Once you calculate the correct square dimensions of your speaker box or cabinet. (There are websites that can help you with calculations) Remember to measure twice and cut once. I have seen similar products for twice the price, but this tube kit has great smooth sound when it is correctly installed. I will purchase another one soon.
Date published: 2011-10-14
  • 2016-02-10T06:41CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_17
  • loc_en_US, sid_268-348, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

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  for a prompt reply.
Precision Port 2" Flared Speaker Cabinet Port Tube Kit

Hi, im wondering when i use the calculator that you guys have it tells me that i need 8.75in in length, this is for 2 2in aero ports in a 1.5cube box tuned to 35hz.How much do i cut the center tube to get that desired length of 8.75 with both flares on. 

Asked by: Daniel1987
The flares are going to take up 5 inches so you would make the center 3-3/4 inches to make the overall port 8-3/4.
Answered by: Chrisf
Date published: 2016-02-09

Working on a truck sub. Using the port calculator, it says I need a flared 2 inch port at 5.07 inches long. Info on the page also states to cut the 2 inch tube 5 inches shorter than the flared port value. So I just need flares and a coupler?

Asked by: AdamN
Yes that is correct.
Answered by: MattP
Date published: 2016-01-18

Using one Dayton Audio DCS165-4 6-1/2" inside the Denovo Audio Knock-Down MDF 0.56 cu. ft. Bookshelf Speaker Cabinet. What length would you suggest for the 2" Precision Port for a 42hz tune? Thank you.

Asked by: wrr218
You will need an 8" length for a 42 Hz tuning frequency.
Answered by: MattP
Date published: 2015-09-22

When calculating the enclosure volume, should I subtract the volume of the port tube?

Asked by: ZackWillie
Port and driver displacements can be considered in the overall volume of the enclosure. In most cases it is not enough to make any real difference, but it is application specific.
Answered by: MattP
Date published: 2015-02-24

Hello, I plan on using one of these in a single cube enclosure for two Dayton Audio 6 1/2" classic 4 ohm woofers as part of a boombox project and I was wondering, how many inches from the enclosures internal wall should the port be? Thanks!

Asked by: mustardgas1
A general rule of thumb is to keep the opening of the port as far away from walls as it is in diameter, so in this case 2" would be a safe number.
Answered by: MattP
Date published: 2015-06-23

Is there an easy way to put a 90 degree bend in this port? Will it work with PVC fitting sold in stores like Home Depot? Reason being, it will be too close to the rear of the enclosure for the length I need.

Asked by: Leesonic
I have seen standard PVC elbows used with these ports before but they required a bit of fabricating since they are not a direct fit.
Answered by: MattP
Date published: 2015-06-23
  • 2016-02-10T07:26CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_13
  • loc_en_US, sid_268-348, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational
Parts Express FacebookParts Express TwitterParts Express YouTubeParts Express PinterestParts Express SpotifyParts Express Instagram
Live Chat Software