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Precision Port 2" Flared Speaker Cabinet Port Tube Kit
This is dumb but 1st question:how long is this? I just want to be sure before i buy. Im building a 1.5cu ft box and i want it at 33hz. I used the calculator but how long does it need to be one end of a flare to the other end of the other flare
With dual flares the overall length will only need to be 4-1/4".
Date published: 2014-07-15
What type of glue do you recommend to glue the port to MDF?
Gorilla Glue or any two-part epoxy will work well for this application. We generally recommend drilling out the screw holes marked on the back side of the flare mounting flange for the best attachment method.
Date published: 2014-06-12
How short in length can this port be adjusted to?
The shortest this port could be cut to is roughly 3" which is essentially just attaching the two flares together.
Date published: 2013-06-07
Will this be a proper sized port for a single 6 1/2 subwoofer?
A 2" port tube is appropriate for a 6-1/2" speaker, however, the length would be determined according to your overall design. If the 6-1/2" woofer in question is one that we carry, you are welcome to give us a call at 1-800-338-0531 to discuss the specifics of a suitable enclosure and port length.
Date published: 2012-02-13
Port length is too long, how can I do this? (half an inch longer :/)
Hello,I am building ZX Spectrum DIY Build by Paul Carmody and his design states a 2" diameter port 3.5" long. So I ordered the Pecision 2" port kit and I am reading the instructions and it gives a formula to calculate the tube port lenght (Lv) and than it states that the center tube should be trimmed 4" shorter than Lv.... my Lv is 3.5"... soo yeah problem. Without the center tube the flared ports I guess are .5" longer than I need them. So my dilemma is, can i shave off/cut .25" from each flare end and than join them with the ring (which i will also have to adjust)? Will this behave as a 3.5" port?The instructions also state that the fully assembled port should be 1" longer than Lv which would make mine 4.5"
Yes, the only option in your situation is as you describe. You would need to trim each flare and use the ring to connect them.
Date published: 2012-01-20
i'm building my first 2 way with your guidance. I cannot fit the port tube on the front. does it matter where on the cabinet that this is placed. Also, is there a standard as to where the woofer and tweeter get placed? should there be a specific space between them or as close together as possible.thanx
It depends on the placement of the speaker in the room, as well as the tuning of the port. It is fine to have the port in the back if the speaker will not be directly up against the wall. It would be a good idea to have it at LEAST 4-5" away from the wall, more is better. Placing the port on the front will produce some unwanted distortion in your signal. You will get a "gulping" noise that will be partially masked by placing it on the rear of the cabinet. In my experience I would say that it is better to have the port on the back side of the cabinet. The lower frequencies are essentially omnidirectional, so the fact that they are not firing at the listener is okay. As for driver placement, it is good to try and mimic a point source for the sound. This means putting the drivers closer together is better.
Date published: 2012-01-19