woofer box for two AB XFL1544 - 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 11-30-2014, 10:40 AM
New CACO Member
 
Activity Longevity
0/20 9/20
Today Posts
0/11 sssssss16
Location: Texas
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default woofer box for two AB XFL1544

I was needing help after researching around on what I should do with the port size on my box. Internal measure are 41x18x17, around 6cubic feet. I have 4 round ports 4" in diameter. I want a good hz but have been debating. I have only 18" in height so I was wondering if four 4x15 ports would be ok and what that would be tuned to. I have not done round ports before. That gives 3" between the bottom of the port and the bottom of the box. Is there a noticeable difference in sound between 4x15 and 4x14?

They'll be receiving 1500-1800 watts together. The subs are facing the rear, the ports are facing upwards. Need a little direction.
thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 11-30-2014, 11:26 AM
iamsonic's Avatar
SUPER FAST SHIPPING
 
Activity Longevity
1/20 19/20
Today Posts
0/11 ssss31245
Location: Waterloo Iowa
Thanks: 2,540
Thanked 2,472 Times in 1,730 Posts
iTrader: (185)
Feedback Score: 185 reviews
Default

there's no noticeable difference. 14 vs 13"

33hz is the go-to frequency.. (best bet)
Reply With Quote Quick reply to this message
  #3  
Old 11-30-2014, 11:41 AM
New CACO Member
 
Activity Longevity
0/20 9/20
Today Posts
0/11 sssssss16
Location: Texas
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by iamsonic View Post
there's no noticeable difference. 14 vs 13"

33hz is the go-to frequency.. (best bet)

So would 4x30 (two 4x15) be enough port space in 3 cubes for 33hz? Or is that a few Hz higher. I have 18" to play and 15" is almost pushing it, so if i need to gain more port i have to put a 90 degree or a 180 to bend at least one port per sub back upwards. This will be my largest setup, my last setup was two 12s on 1200 watts at 42hz with a box i did not build myself. So i'm trying to learn and gain as much info as I can. Since the box is already built, I have ports left to play with. Thanks for any help sonic
Reply With Quote Quick reply to this message
 
  #4  
Old 11-30-2014, 11:55 AM
iamsonic's Avatar
SUPER FAST SHIPPING
 
Activity Longevity
1/20 19/20
Today Posts
0/11 ssss31245
Location: Waterloo Iowa
Thanks: 2,540
Thanked 2,472 Times in 1,730 Posts
iTrader: (185)
Feedback Score: 185 reviews
Default

4 3" will need to be 21.5 to 22" long
Reply With Quote Quick reply to this message
  #5  
Old 11-30-2014, 12:31 PM
New CACO Member
 
Activity Longevity
0/20 9/20
Today Posts
0/11 sssssss16
Location: Texas
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default



I have four 4" circles cut out. Need the length of what to cut my pvc pipe to.

Last edited by iamsonic; 11-30-2014 at 04:41 PM.
Reply With Quote Quick reply to this message
  #6  
Old 11-30-2014, 01:19 PM
iamsonic's Avatar
SUPER FAST SHIPPING
 
Activity Longevity
1/20 19/20
Today Posts
0/11 ssss31245
Location: Waterloo Iowa
Thanks: 2,540
Thanked 2,472 Times in 1,730 Posts
iTrader: (185)
Feedback Score: 185 reviews
Default

make the ports 2" shy of the bottom.

the tuning will be around 38-40 hz..


honestly,
my suggestion at this point is to stop what you're doing and just buy this;
Q-Power QBOMB15V 15-Inch Dual Vented Subwoofer Box Enclosure : VMInnovations.com
Reply With Quote Quick reply to this message
The Following User Says Thank You to iamsonic For This Useful Post:
tez4life (11-30-2014)
  #7  
Old 11-30-2014, 03:31 PM
New CACO Member
 
Activity Longevity
0/20 9/20
Today Posts
0/11 sssssss16
Location: Texas
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default

I would of bought that box if I would of joined here a few weeks ago, I built this out of 1" MDF, all I have to do is cut the ports and throw the subs in and see how i sounds. That box is 4.6 cu ft and mine is 6.0 cu ft. I measured my trunk and went as large as I could. It's in a crown vic as wide as I could make it. I could of went with more height. I have a 5ft piece of PVC that I can equally cut into 15" lengths. It's hard to find a prebuilt box to drop into the crown vics lower trunk space.
Reply With Quote Quick reply to this message
  #8  
Old 11-30-2014, 04:21 PM
Elite Member
 
Activity Longevity
0/20 19/20
Today Posts
0/11 sssss2148
Location: Mobile Al
Thanks: 231
Thanked 59 Times in 57 Posts
iTrader: (26)
Feedback Score: 26 reviews
Default

What year Vic? I had a 2004 for 6 years, had a dual 15" box built for me by a semi local guy for a pair of DC subs, it was subs up, port back, 6 cubic feet net (after slot port displacement) tuned to 32hz with about 70 square inches of port....box was externally 40"x 20" x 20" and dropped in without any issues, and still had plenty of room.

Just wondering why your length and depth are so low? I know the crown Vics (pre 1998) had slightly smaller trunks though. Really with those subs you want more box volume, and port area if you can, like 7 cubic feet net for the pair.

Id fire subs and port up, have 3 friends that all had Crown Vics that did that and all were happy with the output. Trunk lid going to rattle but a little deadening and spray foam helps.

Products Menu That will help you figure out how long to make your ports to get your tuning right.
Reply With Quote Quick reply to this message
  #9  
Old 11-30-2014, 04:23 PM
Elite Member
 
Activity Longevity
0/20 19/20
Today Posts
0/11 sssss2148
Location: Mobile Al
Thanks: 231
Thanked 59 Times in 57 Posts
iTrader: (26)
Feedback Score: 26 reviews
Default

(4) 4" round ports in 6 net would have to be 16.5" long for 35hz and 18.8" long for 33hz....for them to be 15" long, that would put you at a tune of 37hz....
Reply With Quote Quick reply to this message
  #10  
Old 11-30-2014, 04:37 PM
New CACO Member
 
Activity Longevity
0/20 9/20
Today Posts
0/11 sssssss16
Location: Texas
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default

Mine also is a 2004 LX. Externally my box measure 42x19x19. I built the box for mofos at first then decided to go with the XFL 15s which I'm glad about.
My box has the subs facing the rear and the ports facing upwards, but I can face subs up and have the port forward or back with room for it to breathe still. Since you all had good results I might have to give that a try.
Did you just deaden the trunk lid or did you do the whole trunk. On my 02 I had if you pull back the carpet toward the rear sides you can see the ground from inside the trunk. The trunk rattled a good amount with the 12s I had in there in 4.5 cubes.
I think I'm going to get two 180 degree bends and extended two ports an extra 6-8 inches for lower tune. Need to make my final decision. Plan on completing and installing next week. New deck, speakers, amp for mids and highs, amp for woofers and new subs.
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
Box for 8" woofer.... West1 General Car Audio Discussion & Questions 2 11-24-2012 07:24 PM
XFL1544 Basket (old style) big_grasshopper Wanting to Buy (WTB) 0 10-11-2012 05:16 PM
woofer tester and bass box lite usampsman Wiring, Electrical & Other Installation Equipment 8 10-03-2012 08:48 PM
(2) american bass xfl1544 psychoacoustics 15" Subwoofers 60 07-24-2011 10:49 PM
Box suggestion dc/fi woofer 808runner Enclosure Discussion & Design Construction Help 1 04-16-2011 06:46 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 03:23 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.