[SoundQubedfFan]

So here is the port I want to use:

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Precision Port 4" Flared Speaker Cabinet Port Tube KitThe 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...

www.parts-express.com

How much of it is usable? It is 18" long with the flares installed on both sides. There is about 16" of straight port and then about 1" of flare on each side... so 2" total of flare. How much counts towards the tuning of the port? Do you understand what I mean? I know the flares don't count as inches for length of the port right? Thanks guys! If you don't understand let me know and I will try to explain. I am thinking its 16" thats usable port length but correct me if I am wrong!

 

[SoundQubedfFan]

Also, anyone know how to make a clean cut on a precision port?

 

[miniSQ]

I think full extension yields a 17" overall port length. When i use flared ports, i add 50% of the flare length to the straight part of the port.

You can cut it with a hand saw and then sand it smooth.

 

[SoundQubedfFan]

So if I want to use 12" for the tuning of my box how long should the total port be with flares? Do you understand what I mean?

 

[miniSQ]

So if I want to use 12" for the tuning of my box how long should the total port be with flares? Do you understand what I mean?

I do. If it were me, the overall tip to tip of the entire port would require measuring the depth of 1 of the flared pieces, lets say its 3". In that case i would make the overall tip to tip a total of 15" long. And when cutting the main tube you need to take into account the overlap when you assemble it.

By only measuring 1 of the 2 flares you are in effect counting 1/2 of each.

 

[SoundQubedfFan]

What about where the rings meet the flare does that count as part of the 12" I am looking for?

 

[miniSQ]

What about where the rings meet the flare does that count as part of the 12" I am looking for?

Thats what i meant about the overlap. Count it on the flared piece, but then account for it when you cut the straight piece. Meaning your straight piece will be a little longer to compensate for the overlap.

 

[SoundQubedfFan]

Length of flares is 1". They're 6-1/4" in diameter.

 

[SoundQubedfFan]

Both sides are flared

 

[miniSQ]

Then i would make the over port length 13".

 

[SoundQubedfFan]

Over?

 

[miniSQ]

Over?

overall. sorry.

 

[SoundQubedfFan]

Ok so I will cut it down to make it 13" total length.

Does this website mean 2 flared ports or 1? I want my box at 2.15cuft tuned at 33hz, 4 inch port, and 1 port total for the website then it says total length of port 12.5". I just found this website just now. Does it mean both sides are flared or just 1?

Products Menu

www.psp-inc.com

 

[miniSQ]

You said both flares are 1" deep. Do you not have them in hand to verify both are flared and both match?

 

[SoundQubedfFan]

Yes theyre both flared but on the website do they mean one flared port or both flared ends after you fill in the info:

Products Menu

www.psp-inc.com

(go to products menu)

volume of box: 2.15ft3
tuning freq: 33hz
port diam: 4"
number of ports: 1
Equals a flared port at both ends? 12.5"

 

[miniSQ]

Yes theyre both flared but on the website do they mean one flared port or both flared ends after you fill in the info:

Products Menu

www.psp-inc.com

(go to products menu)

volume of box: 2.15ft3
tuning freq: 33hz
port diam: 4"
number of ports: 1
Equals a flared port at both ends? 12.5"

Yes it is taking into account both ends being flared. But it is also saying that he flare is 3" which is what i was thinking it was too. But you said 1".

It is saying take into account BOTH 3" flared pieces when it comes to total overall length. But most people would ignore that and only take into consideration 1 of the flares. Meaning I would cut the main tube 3" shorter than the suggested port length. Not the 6" they suggest.

 

[SoundQubedfFan]

WelL the flared ends are 3 inches I thought you meant just the length of the flared part of the 3 inches. The actual flare is 1" the total piece of plastic with the flare on it is 3 inches. Sorry for the mixup!

 

[SoundQubedfFan]

I think I need to do 6 inches shorter than 12.5" so the inner tube should be 6.5"

 

[SoundQubedfFan]

I am trying to explain this... the flared ends have a total of 3 inches on each side if I set them flat on the table.

 

[Thomasluke7899]

I am trying to explain this... the flared ends have a total of 3 inches on each side if I set them flat on the table.

Take pics with a tape measure.