Trying to make box for kicker cvr....

[Based]

Ok I have a CVR 12 my little bro wants to have in his room. It's gonna run off a 120 watt 4 ohm plate amp. Obviously low power for the sub but that's the amp my bro can afford and plus he doesn't need a whole lot of bass.

Since it's low power I want to make the box a little bigger than the 2.25 internal max recommendation for a ported box. I'm going for 3 cubes. I'm thinking 35hz will be a good tuning frequency.

Now, I've been trying to come up with the port for this box but I just can't!!!! I'm using this calculator:

Port Length Calculator

I want 16 inches of port area per cube so 3x16 is 48. Right now i'm working with 6 inches tall 8 inches wide for a square port. To tune that to 35hz in a 3 cube enclosure it needs to be 25.5 inches long... And then when I get the displacement of the port it's over a cube... So I have to make the box like 25x25x12 just for one 12... this doesn't seem right.

Am I missing something or what?

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[Babykinns 10+ year member]

Ok I have a CVR 12 my little bro wants to have in his room. It's gonna run off a 120 watt 4 ohm plate amp. Obviously low power for the sub but that's the amp my bro can afford and plus he doesn't need a whole lot of bass.
Since it's low power I want to make the box a little bigger than the 2.25 internal max recommendation for a ported box. I'm going for 3 cubes. I'm thinking 35hz will be a good tuning frequency.

Now, I've been trying to come up with the port for this box but I just can't!!!! I'm using this calculator:

Port Length Calculator

I want 16 inches of port area per cube so 3x16 is 48. Right now i'm working with 6 inches tall 8 inches wide for a square port. To tune that to 35hz in a 3 cube enclosure it needs to be 25.5 inches long... And then when I get the displacement of the port it's over a cube... So I have to make the box like 25x25x12 just for one 12... this doesn't seem right.

Am I missing something or what?

2.25 cubes should be plenty for that sub on that power

 

[Louisiana_CRX 5,000+ posts]

In a big box the bass will get sloppy ...