Port Area NOOB! - Car Audio Classifieds!
Car Audio Classifieds!  

Go Back   Car Audio Classifieds! > Enclosures, Fabrication & Sound Deadening > Enclosure Discussion & Design Construction Help

Enclosure Discussion & Design Construction Help Have questions about enclosure design neeed some help thoughout your build, ask here.


Notices

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-13-2013, 03:14 AM
Spl-zx2's Avatar
Bass Brotha
 
Activity Longevity
0/20 14/20
Today Posts
0/11 sssssss81
Location: NC
Thanks: 11
Thanked 1 Time in 1 Post
iTrader: (2)
Feedback Score: 2 reviews
Default Port Area NOOB!

So im building a lower tuned box for my two skar vvx 12s and I have no idea what im doing when it comes to port area.I think I have the right sized box and right tuning frequency,I just want to know if the port area is right.My goal is to be loud from 26-33 hz.Not going to be metering alot so yeah.Will be running em on about 1500-1700 rms.Thanks.




Uploaded with ImageShack.us

Last edited by Spl-zx2; 04-13-2013 at 03:22 AM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 04-13-2013, 03:24 AM
fivedollapizza's Avatar
CACO Member
 
Activity Longevity
0/20 13/20
Today Posts
0/11 ssssss314
Location: Sacramento
Age: 34
Thanks: 22
Thanked 22 Times in 14 Posts
iTrader: (7)
Feedback Score: 7 reviews
Default

Fellow noob here but I can tell you with 28 sq/in of port for just my sa8s on 1100 I have port noise. Probably should go closer to 30-32 or more.

Have never ran those subs so I don't know exactly what they like.

sent from my gs3
Reply With Quote Quick reply to this message
  #3  
Old 04-13-2013, 03:27 AM
taylorpro's Avatar
^ Mr. Creativity ^
 
Activity Longevity
0/20 17/20
Today Posts
0/11 sssss6033
Location: Indiana
Age: 26
Thanks: 341
Thanked 392 Times in 293 Posts
iTrader: (28)
Feedback Score: 28 reviews
Default

3.5 cubes you want at least 45" of port with a slot port

OR

Get a 6" aero. Make it 17-18" long. screw it in. be done.lol
__________________
4th 2012 Db Drag WF Street Stock 150.8db

-Youtube Channel

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message
 
  #4  
Old 04-13-2013, 03:30 AM
fivedollapizza's Avatar
CACO Member
 
Activity Longevity
0/20 13/20
Today Posts
0/11 ssssss314
Location: Sacramento
Age: 34
Thanks: 22
Thanked 22 Times in 14 Posts
iTrader: (7)
Feedback Score: 7 reviews
Default

Quote:
Originally Posted by taylorpro View Post
3.5 cubes you want at least 45" of port with a slot port

OR

Get a 6" aero. Make it 17-18" long. screw it in. be done.lol
Didn't even look at the box size. Assumed everyone has a 1 cu/ft box lol

sent from my gs3
Reply With Quote Quick reply to this message
  #5  
Old 04-13-2013, 03:35 AM
Spl-zx2's Avatar
Bass Brotha
 
Activity Longevity
0/20 14/20
Today Posts
0/11 sssssss81
Location: NC
Thanks: 11
Thanked 1 Time in 1 Post
iTrader: (2)
Feedback Score: 2 reviews
Default

lol.So how the hell do i get more port area but keep lower tuning?
Reply With Quote Quick reply to this message
  #6  
Old 04-13-2013, 04:02 AM
Spl-zx2's Avatar
Bass Brotha
 
Activity Longevity
0/20 14/20
Today Posts
0/11 sssssss81
Location: NC
Thanks: 11
Thanked 1 Time in 1 Post
iTrader: (2)
Feedback Score: 2 reviews
Default

Okay so Ive done a little more research and I got it at 36sq port area at 29hz

Reply With Quote Quick reply to this message
  #7  
Old 04-13-2013, 05:24 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

People usually shoot for ~ 12-15 square inches of port per cubic foot of box when using a slot. You can sometimes get away with less port area when tuning lower like you're trying to do, but at 8 sq in per cube like you have, you're flirting with having serious port noise.
__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole
Reply With Quote Quick reply to this message
The Following User Says Thank You to TaylorFade For This Useful Post:
Spl-zx2 (04-13-2013)
  #8  
Old 04-13-2013, 10:05 AM
taylorpro's Avatar
^ Mr. Creativity ^
 
Activity Longevity
0/20 17/20
Today Posts
0/11 sssss6033
Location: Indiana
Age: 26
Thanks: 341
Thanked 392 Times in 293 Posts
iTrader: (28)
Feedback Score: 28 reviews
Default

Quote:
Originally Posted by Spl-zx2 View Post
Okay so Ive done a little more research and I got it at 36sq port area at 29hz

still too little. need at LEAST 42". Id want ~50. As to your previous question on how you get enough port and still get low tuning, well, welcome to the challenges of box design lol. Slot ports are a pain in the ass, especially in smaller sized boxes, to get enough port, the correct net displacement, and still obtain the desired tuning. That's why I STRONGLY suggest using a 6" aero port.

Also, another bit of food for thought, even though you want to play strong in the mid-upper 20's, that doesnt mean you necessarily need to tune that low. I'd say, if you were to tune at 30-31 with a 6" aero port in the same airspace you're looking at, it would do awesome. It'd be easy to build, easy to tune, and aero's are just more awesomer.lol

EDIT: This is exactly what I'd do. ~3.5 cubes net, single 6" aero kit from parts express and full length, and slop the bitch in the box. thing would sound awesome. Also, if you're still open for thoughts, if you are going to use an aero, you may to consider side firing it towards the drivers wheel well at the back most part of the box. The "Anton Miller" style box if you will
__________________
4th 2012 Db Drag WF Street Stock 150.8db

-Youtube Channel

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by taylorpro; 04-13-2013 at 10:12 AM.
Reply With Quote Quick reply to this message
The Following User Says Thank You to taylorpro For This Useful Post:
Spl-zx2 (04-14-2013)
  #9  
Old 04-13-2013, 10:43 AM
New CACO Member
 
Activity Longevity
0/20 13/20
Today Posts
0/11 sssssss38
Location: New Orleans
Thanks: 0
Thanked 1 Time in 1 Post
iTrader: (1)
Feedback Score: 1 reviews
Default

Noob question but your port area isn't calculated into your box volume correct? It'll be box volume plus port area?
Reply With Quote Quick reply to this message
  #10  
Old 04-13-2013, 10:44 AM
taylorpro's Avatar
^ Mr. Creativity ^
 
Activity Longevity
0/20 17/20
Today Posts
0/11 sssss6033
Location: Indiana
Age: 26
Thanks: 341
Thanked 392 Times in 293 Posts
iTrader: (28)
Feedback Score: 28 reviews
Default

Quote:
Originally Posted by onextwoxxtri View Post
Noob question but your port area isn't calculated into your box volume correct? It'll be box volume plus port area?
The volume the port "takes up" inside the box is subtracted from the GROSS volume. Alot of times, like in torres, after you subtract these different things, you get the NET volume. (Reference the right rows of info from the pic i posted to see what i mean)
__________________
4th 2012 Db Drag WF Street Stock 150.8db

-Youtube Channel

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Car Audio Classifieds! forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live
Level of Car Audio Knowledge
What's your level of car audio?

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Port area witherman Enclosure Discussion & Design Construction Help 2 10-02-2012 12:58 PM
help with port box a per and port area per ft lilsoccersully Enclosure Discussion & Design Construction Help 0 05-02-2012 10:04 PM
Port area vs. Port length TaylorFade General Car Audio Discussion & Questions 3 10-20-2011 10:52 PM
OA 15 Port Area Kidthump General Car Audio Discussion & Questions 5 09-08-2011 01:04 AM
Calculating port length for a port with changing area? 98AckCL23 Enclosure Discussion & Design Construction Help 12 12-27-2009 02:40 AM

» Amps
A/d/s/
Advent
Alphasonik
Alpine
American Bass
ARC Audio
Atomic
Audio Art
Audio Gods
Audiobahn
Audiocontrol
Audiopipe
Audison
Aura
Autotek
Avionixx
Bazooka
Beyma
Blaupunkt
Boss
Boston Acoustics
Bravox
Cadence
Cascade (CAE)
CDT Audio
Cerwin Vega
Clarion
Clif Designs
Concept
Coustic
Critical Mass
Crossfire
Crunch
DB Drive
DC Audio
DC Power
DEI
Denon
Diabolo
Diamond
Digital Designs
Directed
DLS
Dual
DYnamat
Dynaudio
Earthquake
Eclipse
Elemental Designs
ESX
Eton
Farenheit
Fi Car Audio
Fix My Speaker
Focal
Fusion
Genesis
Ground Zero
Hafler
Helix
Hertz
Hifonics
Hushmat
Image Dynamics
Infinity
Interfire
JBL
Jensen
JL Audio
JVC
Kenwood
Kicker
Knu Konceptz
Kole Audio
Kove Audio
Lanzar
Lightning Audio
Linear Power
MA Audio
Magnat
Marantz
Massive Audio
MB Quart
McIntosh
Memphis
Metra
MMATS
Mobile Authority
Morel
MTX
Nakamichi
Niche Audio
O2 Audio
Ohio Generator
Optima
Orion
Oxygen Audio
OZ Audio
PG Audio
Phase Linear
Phoenix Gold
Pioneer
Polk
Power Acoustik
Powerbass
Powermaster
Precision Power
Profile
Pyle
Pyramid
RadioShack
Rainbow
Rampage
RE AUdio
Rockford Fosgate
Scanspeak
Scosche
Seas
Sony
soundstream
Sparkomatic
SPL Dynamics
Stinger
Sundown Audio
Swiss Audio
Targa
TC Sounds
TREO Engineering
TRU
Tsunami
Ultimate
US Acoustics
US Amps
Velodyne
Vifa
Viper
Visonik
Xtant
Zapco
Zed Audio
Powered by vBadvanced CMPS v3.2.3
Links
Amp Guts
amplifier, amp guts, ampguts, car audio classifieds, speakers and subs for sale with listings of 12 volt sound systems. Security systems for sale for aftermarket car audio equipment with amplifier and amps for sale
Car Audio Forum
car audio forum, moble audio, car stereo, wholesale car audio, 12 volt, with, amplifier, amp, subwoofer, sound quality, buy car audio, and sell automotive stereo systems for cars
Car Audio Sound Quality Forum
Sound QUality science based car audio forum, amplifier, subs and speaker design, fabrication help, sound systems forum, aftermarket car audio website for sound quality.
Car Stereo Forum
DIYMA car audio stereo forum for 12 volt car audio subwoofer and amplifier systems that have sound quality with wholesale car audio products.


All times are GMT -5. The time now is 06:44 AM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.