Jl 12w3v3 Box

What do you feel is lacking in their performance? Also, post up the specs on the enclosure you built. Like the HxWxD of the enclosure, HxW of the port and how ling it is. Also what wood and thickness was used.

Also be sure to double-check all your speaker wiring.

You may have one woofer wired out of phase, and causing cancellation.

That is a very skinny and tiny port. Also the material is not a wise choice. I would look at a new design and mdf.

That enclosure is only 1.4 cf net tuned near 36hz with two 12s in it....no wonder you don't like it!!!....thats not big enough for one 12 must less two......build a new box twice that size and you will like it a lot better!!!!!

...built to spec? Sounds like you built a box for 1 woofer and put 2 in it...

Also, use MDF (at least 3/4") - plywood is too flimsy, leaky, and lacking in density for a good enclosure.

That enclosure is only 1.4 cf net tuned near 36hz with two 12s in it....no wonder you don't like it!!!....thats not big enough for one 12 must less two......build a new box twice that size and you will like it a lot better!!!!!

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Two separate ports then?

And why so wide?? What kind of vehicle is this in? (nearly 5ft wide box??)

How are the woofers and port(s) oriented?

MDF would definitely help with the overall sound quality (again because of the greater wood density and being more air tight) - though the dimensions your working with still sound a bit wonky, as for the distortion, could be several factors - but to clarify, the amp gain is not a volume knob. Blindly setting it to half does not mean the amp is gonna do half power. It needs to be set uniquely for your headunit. It's a multiplier that controls how much input voltage it takes for the amp to produce full power.

It's an 84 VW Vanagon 59" wide in back. Built the box to the detentions in the booklet that came with the subs. It sounds pretty good maybe just need to go with the MDF. There are two ports 1 for each chamber. Ports are on the ends facing foreword same as the subs. They are being powered by a brz 1700w Hifonics amp ran at 2 ohm. So they should be getting about 1200w for the 2 of them. The problem is when I play above 1/2 the bass seams to get distorted. Gain on the amp is below half way. Thanks!

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