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Precision Port 3" Flared Speaker Cabinet Port Tube Kit
Can the tube be cut down to 3inches?
According to the product details, yes you can cut the tube down. Because you glue the end cones on the tube when assembling this kit.
Date published: 2011-09-25
Would I need to change the length of the port?
I am making a custom ported box according to jl audios specs found here http://mobile.jlaudio.com/pdfs/16082.pdf it calls for a 14 long inch port would I need to to use a different length with this port because of the flare?
Yes, for each flared end, you'll want to add 1/2" to the length of your port. So in your case, with the two flared ends on this port, you'd want the overall length of the port to be 15".
Date published: 2013-07-21
the tool on the company website said I need a length of 8.5"so do I cut the tube to 2.5" because the flares are 3" each total 6" or cut it to3.5"
because they say the flares have 2.5" usable length?
if they say the flares count as 2.5" of tube each, then yes I would say cut the tube to 3.5" with 2 flares for your total of 8.5" required. I didnt realize the flares should be calculated as part of the tube length however.
Date published: 2012-01-19
2- 3" opposed to 1- 4" ok?
The flange is so huge on the 4" ports, can I use 2 3" ports instead? I'm guessing that because the 2 will be sharing the work that I shouldn't run into port noise this way either. I can accommodate the length differences and have used a port calculator to get the equivalent lengths in the 3" version so I'm fine there, just wondering if this is all fine and dandy to do?thanks in advance... :)
Yes, two 3" ports would work just fine. The cross sectional area is very close between two 3" ports and a single 4", with the two 3" ports having just a bit more.
Date published: 2012-06-22
Is this worth the extra $10 over the other 3" flared port?
I am tuning a very cheap sub to 25 Hz. I'd need a 3"x8" flared port to do that. I can get the measurement exact with this port since it's adjustable, but if I use the one that's only $3 I could tune it to about 23 Hz instead (it's ~11" long). I wouldn't really hear a difference would I?
THEY WILL PRODUCE LESS PORT WHISTLE AT THE LOW END YOU NEED... STOP SOME SECONDARY NOISES WHEN THE CABINETS BOTTOM OUT ON A NOTE,,OR BUILD 2 PORTS FROM 3 IN PVC....YOUR CALL
Date published: 2012-08-01
13.5" length port in a 14"x14"x14" cabinet?
it will end up being like 1/2 an inch away from the wall of the cabinet. is this okay?
At a 1/2" away it is likely the port will act as if it was 1-2" longer due to the extra length from being confined between the flare and wall. I would back it up 1" so there is 1-1/2" of clearance. Even at that distance the close proximity of the inside flare to the cabinet wall will act as extra port length therefore the tuning will be similar to one that is 13.5" in length with ample clearance.
Date published: 2013-04-21