Does port volume matter?

[Blackedout]

Haha. You guys kill me. I fucked up one word "volume" and I'm getting schooled.

My bad, it's my first day on the job I guess.

[SCS_Audio]

Lol, its an important word!!

Are you from the Bay Area or the Bay Volume?????

[MrSkippyJ]

hey, i didn't kill anyone

[Hugh G. Rection]

Advantages of less port area:

- More power handling.

generally speaking.... mechanical, yes. thermal, no.

[Blackedout]

Advantages of less port area:

- More power handling.

generally speaking.... mechanical, yes. thermal, no.

Agreed.

[scoobywrx05]

The port volume range of 12-15 sq inches of port per cube was found by trial and error. We can generalize it and say that the most effective boxes fall in this range. Keep in mind that it is only a guideline.

Advantages of less port area:

- More power handling.

* Note: This assumes that the size of the box is within an acceptable range of the driver you are using.

Haven't figured out the advantage of more port area yet. Someone else might be able to elaborate on this.

You are correct when you say the port areas you listed as being a guide line. Usually a 12 to 14 sqin per ft for an aero port and 14 to 16 sqin per ft for a square is pretty close most of the time. Port area is based off of how many drivers are in an enclosure ,what the port is tuned to and the xmax of the speaker.

[Hugh G. Rection]

The port volume range of 12-15 sq inches of port per cube was found by trial and error. We can generalize it and say that the most effective boxes fall in this range. Keep in mind that it is only a guideline.

Advantages of less port area:

- More power handling.

* Note: This assumes that the size of the box is within an acceptable range of the driver you are using.

Haven't figured out the advantage of more port area yet. Someone else might be able to elaborate on this.

You are correct when you say the port areas you listed as being a guide line. Usually a 12 to 14 sqin per ft for an aero port and 14 to 16 sqin per ft for a square is pretty close most of the time. Port area is based off of how many drivers are in an enclosure ,what the port is tuned to and the xmax of the speaker.

you can also use the port area to manipulate the back pressure in the enclosure, therefore affect mechanical power handling. however, this can also affect thermal power handling as well. more movement = more air circulating in the motor of the sub and a cooler operating sub, but less mechanical power handling. there is a very fine line there though, that can be easily fucked up.

i am speaking in general though. too many specifics to go into, which would be an extremely long post.

[Guest]

port volume = how much internal box space the port takes up. aka displacement. 3D. cubic feet.

port area = the cross sectional area of the port. 2D. square inches.

edit: end thread. you guys fought when i just put it all into perspective in 5 seconds LOL.