Benefits of a larger port area

[hzsogood 5,000+ posts]

I know the basics on this one but havent had time to do the testing in the past.. as an example. . Take a 12" sub ported 2^ft ,tuned to... 35. By most avg builders some where in the 12-16 ^inches per foot rule comes in. So by keeping the same tuning but just jumping your port area from say a 2x12 ( 24 sq in port ) to a 4x12 or so ( then also making the port longer )

Just wondering what sound or spl differences are noticed

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[mtdewelf 10+ year member]

more area= less velocity= no port noise, is all i know

 

[nVRuckus 5,000+ posts]

umm you realize its cubic feet of the box x 16 not sub size right? suposidly thats the optimum for the HD3 I dont know about other subs.

 

[dleccord 5,000+ posts]

larger port compensates for smaller enclosures from what i was told.

 

[mtdewelf 10+ year member]

larger ports TAKE UP more room, not make up for not having enough, unless i'm missing something.

 

[Death By Bass 10+ year member]

larger ports TAKE UP more room, not make up for not having enough, unless i'm missing something.

i musta missed it too then //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

larger ports = beneficial when the ports were too small to begin with... //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[dleccord 5,000+ posts]

i was refering to SPL wise.

 

[hzsogood 5,000+ posts]

more area= less velocity= no port noise, is all i know

Kinda of what i was looking for

umm you realize its cubic feet of the box x 16 not sub size right? suposidly thats the optimum for the HD3 I dont know about other subs.

Yea.. On avg u use about 15 square inches / per cubic foot of enclosure size right.. avg..

Mainly wondering if there has been any noticable changes to the ear or mic with larger port area..

example

Having a standard manufactures spec box with like 24 Sq inches port for a 12 in a 2 ^ft enclosure tuned to 35

or

Building the same size 2^ft box ( net ) but just making the port to 48 inches ( 4x12 or something along those lines)

 

[PhatTonyDeMarco 5,000+ posts]

My new box is 4 cubes, and 113 inches of port //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif I havent gotten a chance to hook it up yet, waiting on my new amp, but I'll let you know what the difference is with this and my previous box of 85 square inches.

 

[dvrmstrng 5,000+ posts]

^^^dam im at 9.3 cubes with 107 inches of port.....thats alot for only 4 cubes cant wait to hera how it sounds

 

[hzsogood 5,000+ posts]

^^^dam im at 9.3 cubes with 107 inches of port.....thats alot for only 4 cubes cant wait to hera how it sounds

that would be pretty avg along the 15 sq inches per cubic foot tho..

My new box is 4 cubes, and 113 inches of port //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif I havent gotten a chance to hook it up yet, waiting on my new amp, but I'll let you know what the difference is with this and my previous box of 85 square inches.

That is alot //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif bottom line , just wondering when you know your limits, like when it gets to big or etc what can happen

 

[nVRuckus 5,000+ posts]

that would be pretty avg along the 15 sq inches per cubic foot tho..

how do you figure? 4 cuft x 16 = 64sqin. he is doubling it. Im looking to do probably 6-8 4" flares on 5 cubes myself staying around thw 16 mark for my MT. and thats like 76 sqin @ 6 or 102 @ 8

 

[iamamp3pimp 5,000+ posts]

I always try to get the biggest port possible. thats just personal preference though.

 

[hzsogood 5,000+ posts]

how do you figure? 4 cuft x 16 = 64sqin. he is doubling it. Im looking to do probably 6-8 4" flares on 5 cubes myself staying around thw 16 mark for my MT. and thats like 76 sqin @ 6 or 102 @ 8

im missing something .. where are you getting the 16 from.. Am i wrong with saying a 9^ft box with 100 square inches of port is about a 20"x5" port

 

[80INCHES 5,000+ posts]

i think theres a limit as to how much port area a sub can have.ithink if u have 2 much port area the sub will act as if it was free air imho

80