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 Discussion
Amplifiers
Been a while...
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="THATpurpleKUSH" data-source="post: 8606748" data-attributes="member: 615398"><p>I don't think you need to go quite that big, I would scale it back to 4.75-5cf. That range will help with efficiency and the low power. If the box is too large you can reach mechanical limits on less than rms power and damage the sub.</p><p></p><p>I use the calculators on the12v: <a href="https://www.the12volt.com/caraudio/boxcalcs.asp" target="_blank">https://www.the12volt.com/caraudio/boxcalcs.asp</a></p><p></p><p>According to that calc 12" long will put you closer to 29hz with 5.49cf</p><p></p><p>The tune of the port is a function of the area and length in relation to the volume of the box. The larger the port area (bigger opening) the longer the port needs to be to maintain the same tune freq. For example 4cf @30hz needs 6x16.77 port or 8x31.77 port.</p></blockquote><p></p>
[QUOTE="THATpurpleKUSH, post: 8606748, member: 615398"] I don't think you need to go quite that big, I would scale it back to 4.75-5cf. That range will help with efficiency and the low power. If the box is too large you can reach mechanical limits on less than rms power and damage the sub. I use the calculators on the12v: [URL="https://www.the12volt.com/caraudio/boxcalcs.asp"]https://www.the12volt.com/caraudio/boxcalcs.asp[/URL] According to that calc 12" long will put you closer to 29hz with 5.49cf The tune of the port is a function of the area and length in relation to the volume of the box. The larger the port area (bigger opening) the longer the port needs to be to maintain the same tune freq. For example 4cf @30hz needs 6x16.77 port or 8x31.77 port. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Amplifiers
Been a while...
Top
Menu
What's new
Forum list
