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Precision Port 4" Flared Speaker Cabinet Port Tube Kit
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
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.
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.
Not adding the rear flare could add slight chuffing or unwanted port noise but it will allow for a shorter port tube.
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
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.
Date published: 2013-07-29
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?
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.
Date published: 2013-01-14
What glue to use besides PVC Primer/Cement?
I know the instruction say to use PVC Primer/Cement or ABS Cement, but is there something else that would prove to be just as good and a little easier to work with like rubber cement, gorilla glue, etc. Thanks.
Rubber cement or Gorilla glue will probably work but probably wont last very long. I didn't have any pvc glue so I used some glue for building model cars. Basically anything that will melt the plastic will work and last. Super glue might work well.
Date published: 2013-01-13
Can I extend this port kit to a longer length with 4" PVC Pipe from my local hardware store instead of buying the PSP-4TB plus the connecting rings.
Yes, this will work fine. However, it would be prudent to bring these flares with you when shopping for your PVC pipe. PVC wall thickness varies according to it's schedule rating, and 4" pipe does not have a have an inside, or outside diameter of 4", it's actually 4.5" outside. The schedule (wall thickness) then determines the inside diameter. Schedule 40 PVC has a wall thickness of just under a quarter of an inch (.237"), so it's inside diameter would be just over 4" (4.026"). That would be your best bet, but I can't definitively tell you that the port flares would fit on the PVC pipe.Another option would be black ABS pipe for a better aesthetic match. Use ABS cement if you use ABS pipe, and PVC cement if you use PVC.You can also buy PVC or ABS "elbows" so you can put bends in your port, allowing you to get more creative with your port placement, since it is so long.The real value of this kit is the flared ends which reduce port noise and turbulence. Whatever type of tube you put between them is inconsequential as long as it is sturdy and of the right length for your tuning.One last thought, you may want to consider using a smaller diameter port, as it will not need to be so long. Remember that the more volume your port takes up, the less useful volume your box has.Whatever you do, have fun!
Date published: 2012-12-06