Are your l5's ported? Do you like the " hit " factor of those subs? I can't believe you broke the box. Where did it break? thats awesome in a bad way, and ya that would look fricken awesome to have 3 10's in that car wouldn't it. I just need to find out if I can get away with a ported box that is slightly smaller than specs and would it pound harder than a sealed at specs? Tough question I know but I am giong to spend about 500 on subs and 100 on building the box and not to mention the time to make the box ( although it will be fun ) and I want to get this right as it will be my last set of subs for a long time and I wan't to be happy with it.

4 L5 10's sealed.

You can use the smaller box...just add 1 pound of polyfill per cubic foot and you'll get a virtual volume of about 20-25% larger. The portd box will hit a lot harder and get much louder, but to be honest a sealed application will get more than loud enough and does require significantly less space.

I forgot about polyfill. I heard though that is doesn't work for a ported box and to only use on sealed boxes. Is that true? I think that might be my answer. So 3 10" l5's in a 3.25 ported box with poly. Thanks.

Well you must not spend much time on the internet. Personally ive been through 3 L5s, 2 L7s, running rms power and they all the bed, change to DD, Alpine and never had another coil issue ever. Plus working for a place that sold Alpine and Kicker there was 4 kickers coming back with cooked coils for every 1 Alpine. Never had been impressed with Kicker subs.

Well I definitley want my subs to last a long time. What ever I decide, I will do it soon and post the build project. Thanks everyone for your input. It definitley helped my alot!

Maybe you should build the box better next time :dunno:

Ya how can I build a box that won't break? I mean I know I should use 3/4 mdf and possibly 1 inch for the face but what about screws and glue? ie spacing for screws and length and amount and type of glue.

I heard glue is stronger than screws and you can take them out after it's done and it won't break.

read this:

http://www.audiojunkies.com/blog/1348/ultimate-polyfill-subwoofer-enclosure-resource

I've used it many times over the last 25 years in ported enclosures with similar results to the article.