How do i limit the port noise?

[tburt915 0]

Im in the process of a biulding a new setup which will consist of a 12in FI BL fully loaded with a Hifonics Brutus BRZ1700.1d. My last setup was a 12in FI Q with a Hifonics HFI1000.1d and i had a box i built myself that was 2.5 ft cubes tuned to 33hz with a 2.5 in slot port width. I had it in a chevy blazer and i could hear the air coming out of the box? How do i limit that noise so it sounds clearer?

Vehicle: 2006 Nissan Altima

Location:Trunk

Space Available:30x18x15

Sub: 12in FI BL

Music:Rap and Dubstep

Goal: I want it to have the best SQ while doing well with SPL

Edited February 13, 2013 by tburt915

[Julian 641]

more port and lower port velocity..

Edited February 13, 2013 by Julian

[tburt915 0]

How do i calculate port velocity?

[Julian 641]

Programs such as WinISD

[KyleBrown 121]

http://portsgalore.stefanhinote.com/?do=ventmach

[ssh 924]

more port and higher port velocity..

More port area, and lower port speed.

[Julian 641]

more port and higher port velocity..

More port area, and lower port speed.

Backwurdz whoopz

[tburt915 0]

what is an opimal vent mach number?