A few questions on my first ported box build - 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 09-09-2013, 11:10 PM
Brand New Members
 
Activity Longevity
0/20 12/20
Today Posts
0/11 ssssssss1
Location: TN
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Feedback Score: 0 reviews
Default A few questions on my first ported box build

Hey everybody,

I'm going to build a MDF and fiberglass enclosure for an IDMAX V3 D2 I picked up used. The enclosure is going in the trunk of my Mustang convertible and I would like to port it, to get a bit more SPL. I'm currently running a IDQ 12 V3 in a 0.8 cube net sealed box. I like the sound but when my top is down I get a pretty significant reduction in cabin gain.

Anyway, I mocked up a cardboard baffle yesterday and did some measuring. With the fiberglass enclosure conforming to the available space I should be able to net 1.75 cubic feet after allowing for driver displacement and port displacement.

When I model in WinISD, it looks like I can tune to 31 Hz, with a 1.5" X 7.25" X 15.3" slot port. That gives me 2" of clearance from the rear of the port to the inner wall of the enclosure. I plan to get the exact volume by filling with rice or something before finalizing the port length.

Here is where I have questions though. I would expect some audible huff from my port but the enclosure will be in my trunk so I don't really care about that. So, is there any issue with my port height and width other than huffing which I won't be able to hear?

I'm running a RF 3Sixty.3 so I can flatten the response hump out with PEQ but I don't know if there will be audible problems from the somewhat small enclosure size. I have a reasonable understanding of what QTC does to the sound of a sealed box but WinISD doesn't give QTC for ported boxes. Is there something else I should be looking at to see if I'll be over or under damped? Should I consider using some acousta stuff?

FIY, the Image Dynamics web site gives you the wrong PDF if you try to download specs for the IDMAX 12 V3 sub. I found a copy of the right specs and the parameters are below.

Thanks a whole lot in advance for any help.

-Chris

IMP 1 / 4ohms Nominal Impedance
Re .7/ 2.8 Ohms DC Resistance
Fs 20.2 Hz Resonant frequency
Qes .424 Electrical“Q”
Qms 2.05 Mechanical“Q”
Qts .350 Total“Q”
Vas 5.71 cuft (162 liters) Equivalent volume
Xmax 24.6mm Onewaylinear
Sd 545 cm2 ConeArea
Spl 93.2dB/88.1dB 1wt/1mG.P. / S PLi
Pwr 1000 RMS POWER
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
New trunk build, box ideas/questions. MitchtheTwitch4 General Car Audio Discussion & Questions 28 04-28-2013 04:20 PM
Audio Technix Strato 10's ported box build jt_buck Build Logs 8 03-13-2013 10:48 AM
Help on how to build a ported box please xstingstreetx Enclosure Discussion & Design Construction Help 1 06-20-2011 11:07 AM
Box build questions Soundedtrack General Car Audio Discussion & Questions 0 12-30-2010 08:47 PM
ported box airspace questions fosg8freak Enclosure Discussion & Design Construction Help 13 02-17-2010 06:06 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 03:14 PM.


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.