Fordmods Logo

Ported Enclosure Calculations. 

 

Page 1 of 1 [ 6 posts ] 

 
 Post subject: Ported Enclosure Calculations.
Posted: Wed Sep 08, 2010 6:22 pm 
Smokin em up
Offline
User avatar

Age: 37

Posts: 276

Joined: 14th Apr 2009

Gallery: 12 images

Ride: Fairmont Ghia BA 5.4L V8, AU 6

Power: 205 rwkw

Location: Perth
WA, Australia

Hey Guys,

I've decided to port my sub boxes to get the sound and loudness im after, how do you know what size to make the ports and how long they should be? I will measure the exact volume of the boxes sometime tonight. Im running two Pioneer 12" TS-W306C's.

Cheers,

 

_________________

Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.

Top
 Profile  
 
 
 Post subject: Re: Ported Enclosure Calculations.
Posted: Wed Sep 08, 2010 9:05 pm 
Smokin em up
Offline
User avatar

Age: 37

Posts: 276

Joined: 14th Apr 2009

Gallery: 12 images

Ride: Fairmont Ghia BA 5.4L V8, AU 6

Power: 205 rwkw

Location: Perth
WA, Australia

I used bean bag beans and a 10 litre bucket to figure out the volume, its 49L.

Thanks in advance!!

 

_________________

Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.

Top
 Profile  
 
 
 Post subject: Re: Ported Enclosure Calculations.
Posted: Fri Sep 10, 2010 9:04 am 
Tyre Shredder
Offline

Age: 44

Posts: 383

Joined: 11th Aug 2006

Ride: 6.0L VE Calais-V

Location: Hastings
VIC, Australia

Ask someone with experience with those subs to tell you the best size ported box and port dimensions. Pretty sure it's been asked a few times on the MEA forums.
Top
 Profile  
 
 
 Post subject: Re: Ported Enclosure Calculations.
Posted: Fri Sep 10, 2010 6:38 pm 
Smokin em up
Offline
User avatar

Age: 37

Posts: 276

Joined: 14th Apr 2009

Gallery: 12 images

Ride: Fairmont Ghia BA 5.4L V8, AU 6

Power: 205 rwkw

Location: Perth
WA, Australia

Hey Stone,

Yeah i had a look on there and they did say that ~50L tuned to 35Hz was about the right size, but i didnt see any port dimensions there. In any case, i used that info and plugged it into a few port calculators, for a 3" dia prt it reckons 6.44" long, for a 3.3" dia port it reckons 8" long. But one program recommends a port diamater for you, which was bout 3.8" and 11" long "http://www.carstereo.com/help/Articles.cfm?id=31".

Im tempted to go to bunning's, buy some MDF make a 50L MDF sqaure box and try every port combination above in varying lengths and finding out first hand what sounds best, but that's a bit extreme aye.

 

_________________

Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.

Top
 Profile  
 
 
 Post subject: Re: Ported Enclosure Calculations.
Posted: Sat Sep 11, 2010 11:34 am 
Tyre Shredder
Offline

Age: 44

Posts: 383

Joined: 11th Aug 2006

Ride: 6.0L VE Calais-V

Location: Hastings
VIC, Australia

That is the best way to find the right tuning for your music tastes.

Just remember that a narrow port can restrict airflow and create port noise. So wider is better as long as you can fit the length of port required.
Top
 Profile  
 
 
 Post subject: Re: Ported Enclosure Calculations.
Posted: Sat Sep 11, 2010 10:18 pm 
ACT Cruise Moderator
Offline
User avatar

Age: 42

Posts: 6249

Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

Stone wrote:
That is the best way to find the right tuning for your music tastes.

Just remember that a narrow port can restrict airflow and create port noise. So wider is better as long as you can fit the length of port required.


Stone's got it.

The alternative to bigger long ports, is multiple narrow short ports.

There's several box design programs around (some free others not), that'll help you immensely. WinISD is a good easy one to start with (and free). Requires you to find the specs of the sub.

 

_________________

1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow
2006 BF GT-P in Ego, mods. Supercharged 5.8L all alloy modular

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 6 posts ] 

Who is online

Users browsing this forum: No registered users and 12 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Sat Apr 20, 2024 10:37 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names