Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Help
Enclosure Design & Construction
Wall tune help
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Jeffdachef" data-source="post: 8443513" data-attributes="member: 650438"><p>you got some numbers all wrong buddy.</p><p></p><p>If its that exact same dimensions and its 1.5 inch thick all around then the port height has to be 39-3=36 not 37.75</p><p></p><p>HDC3 18s are .26 cubic feet of displacement so its 1.04 for subwoofer displacement not .92</p><p></p><p>What you have there is 5.25 cubic feet per sub and they wont be liking that.</p><p></p><p>You'll also need to figure out common port walls aka how many walls of the box will act as a port wall, it'll help regain some airspace back.</p><p></p><p>You might have to consider thinking about going bigger with the dimensions or Going with an aeroport or octoport setup instead. You really do not have the airspace right now to run 4 18s properly. Especially if you plan on sticking with slot port.</p></blockquote><p></p>
[QUOTE="Jeffdachef, post: 8443513, member: 650438"] you got some numbers all wrong buddy. If its that exact same dimensions and its 1.5 inch thick all around then the port height has to be 39-3=36 not 37.75 HDC3 18s are .26 cubic feet of displacement so its 1.04 for subwoofer displacement not .92 What you have there is 5.25 cubic feet per sub and they wont be liking that. You'll also need to figure out common port walls aka how many walls of the box will act as a port wall, it'll help regain some airspace back. You might have to consider thinking about going bigger with the dimensions or Going with an aeroport or octoport setup instead. You really do not have the airspace right now to run 4 18s properly. Especially if you plan on sticking with slot port. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Help
Enclosure Design & Construction
Wall tune help
Top
Menu
What's new
Forum list
