need opinions/experiance on port placement - 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 08-15-2010, 03:07 AM
Dbmonster's Avatar
Elite Member
 
Activity Longevity
0/20 18/20
Today Posts
0/11 sssss1217
Location: San angelo, tx
Age: 33
Thanks: 8
Thanked 8 Times in 6 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default need opinions/experiance on port placement

I am about to start building a new box for my suburban, it will be a subs up/port back style box for 4 AQ sdc2.5 15's. and i'm looking for some opinions from those of you that have experimented with different port locations in similar vehicles/box styles.

i posted a thread in the AQ section (here: what do you think of this box? - Car Audio Classifieds) asking for opinions on my box design, and derrick824 brought up the idea of doing the port differently. i had designed the box with a slot port across the bottom of the box, and he said in his experience that a more vertical port in the middle of the box was a full db louder.

I'm hoping to get some input from more people in this section, so what do you think is a better setup, option 1: 5.5" tall x 46" wide slot port across the bottom of the box using the sides and bottom of the box as port walls. or option 2: 17" x 15" port in the middle using the top and bottom of the box as port walls.

here are the 2 different designs

option 1


option 2
__________________

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


WARNING: Due to high sound pressure levels, all passengers are encouraged to remove any and all tight or restrictive clothing such as bras, thongs, etc. before entering this vehicle.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 08-15-2010, 09:10 AM
Ami Creations's Avatar
Loyal Member
 
Activity Longevity
0/20 19/20
Today Posts
0/11 sssss1064
Location: Norcross, GA
Thanks: 2
Thanked 3 Times in 2 Posts
iTrader: (2)
Feedback Score: 2 reviews
Default

That's way to much port area. You need to drop it down to around 160 square inches. Do the vertical port that is 17" tall and 9-3/8" wide. Your port length would need to be 11.15 inches long.
Reply With Quote Quick reply to this message
  #3  
Old 08-15-2010, 09:16 AM
Decaf's Avatar
CACO Supporter
 
Activity Longevity
0/20 18/20
Today Posts
0/11 sssss3460
Location: Illinois
Thanks: 90
Thanked 428 Times in 219 Posts
iTrader: (24)
Feedback Score: 24 reviews
Default

Quote:
Originally Posted by Ami Creations View Post
That's way to much port area. You need to drop it down to around 160 square inches. Do the vertical port that is 17" tall and 9-3/8" wide. Your port length would need to be 11.15 inches long.
?
thats 10sqin per cuft, i thought u knew how to make boxes, lol
no one uses 1/8s to measure, 1/4s should be smallest increment

and aq's are fine with 16-20sqin per cuft


slot ports along the bottom have a tendency to be tuned lower than calculated because if too close to the hatch it extends the "effective" port length

solution is to tune a little higher than u wanted
__________________

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

TeamGG
Team D.O.A.

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 08-15-2010, 09:18 AM
Ami Creations's Avatar
Loyal Member
 
Activity Longevity
0/20 19/20
Today Posts
0/11 sssss1064
Location: Norcross, GA
Thanks: 2
Thanked 3 Times in 2 Posts
iTrader: (2)
Feedback Score: 2 reviews
Default

Quote:
Originally Posted by Decaf View Post
aq's are fine with 16-20sqin per cuft


slot ports along the bottom have a tendency to be tuned lower than calculated because if too close to the hatch it extends the "effective" port length

solution is to tune a little higher than u wanted
When your building enclosures of this size the "rule of thumb" for port are is not the same.
Reply With Quote Quick reply to this message
  #5  
Old 08-15-2010, 09:20 AM
Decaf's Avatar
CACO Supporter
 
Activity Longevity
0/20 18/20
Today Posts
0/11 sssss3460
Location: Illinois
Thanks: 90
Thanked 428 Times in 219 Posts
iTrader: (24)
Feedback Score: 24 reviews
Default

o and my vote goes for port down middle top to bottom, if there is no port bend u can make a port plug and drop ur sqin to 12sqin/cuft and it will drop tuning 5-6hz so u can play any chopped and screwed u want
__________________

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

TeamGG
Team D.O.A.

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
  #6  
Old 08-15-2010, 09:22 AM
Decaf's Avatar
CACO Supporter
 
Activity Longevity
0/20 18/20
Today Posts
0/11 sssss3460
Location: Illinois
Thanks: 90
Thanked 428 Times in 219 Posts
iTrader: (24)
Feedback Score: 24 reviews
Default

Quote:
Originally Posted by Ami Creations View Post
When your building enclosures of this size the "rule of thumb" for port are is not the same.
explain


ive sat in 7 cars using aqs/dds with 16sqin percuft or more this year alone... 5 were walls... and they all sounded great and do really good daily numbers
__________________

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

TeamGG
Team D.O.A.

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
best sub/port placement statonburrell General Car Audio Discussion & Questions 3 07-18-2010 09:30 PM
Need help with port placement. themgators511 Enclosure Discussion & Design Construction Help 6 06-23-2010 04:12 AM
port placement Xtremelegend General Car Audio Discussion & Questions 4 05-05-2010 08:16 PM
port placement mmwwjr Enclosure Discussion & Design Construction Help 7 04-24-2010 06:38 AM
Sub and Port Placement Help undeadxsunshine Enclosure Discussion & Design Construction Help 4 03-27-2010 06:27 PM

» 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 02:19 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.