Building a sub box for 2 12's (for you box experts)

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humblebeast07

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So guys im starting to spec out a box to put in 2 12" LI's with a IA20.1 and I think ive decided on box specs...48x16x16, 14.5x4.25 slot port, 4.79cuft chamber, tuned to 33.64hz, port velocity is 92ftps @32hz, and subs up and port back......

To let you guys know what im looking to achieve.

1. Listener of decaf and rap mostly but also all other genres
2. So I want to hit the lows (30) and be musical
3. But want to hit mid 30's with authority
4. I had 2 12 cvx's a few years ago in a galant and hit a 139.8db(dont know the freq., but hoping to get to 143db+ with this setup

Let me know if you think the cuft and tuning sound like I can achieve what im looking for, or any suggestions

Other option is lower tune 31.8hz and 4.77cuft.....what would the benifits of one over the other.
 

YukonXL04

The Riverboat
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You should easily be louder than that. My buddy had a grand am with 2 audiopipe 12's on a audiopipe 1500.1 and did 146. You have more power and better subs lol.
 
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