Also, what are your thoughts on this particular box? I like it because I don't have to modify anything and fits perfectly under the seat. Now more than likey if I did a custom enclosure behind the seat, I'll have to move it forward and I'm really not for that.

Some people don't really like premade boxes and some do, which is why I'm wanting opinions on this box. The box is contrusted of MDF wood which is also used for custom boxes. It is also is covered with carpet. I think its very reasonable in price as most car audio shops charge $250 for a custom enclosure.

I called Subthump directly to ask if the 10W3V2s will fit and they stated yes, but I really didn't want to go by what they said as more than likey they just want you to buy the box. So another concern I wanted to confirm was that. Will they fit?

If so, another thing I wanted to bring up is air space. Each chamber on this box has .55 cu. ft. of air space. JL Audio recommends .625 per sub for optimum sound. Now keep in mind, that is just a baseline. The more power you put to the subs, the smaller box you'll need. So...if I'm putting 250 watts to each sub (JL Audio 500/1 amp) then they'll be getting plenty of wattage. So my question with this is, do you think that .55 cu. ft. is enough air space for these speakers and will put out good, clear, loud sound?

Here's the link to the box:

http://www.subthump.com/gmcrew.htm

 

Are you going to enter an SPL competition? Probably not. It will be fine.

 

What a SPL competition? Also, if I put these speakers in knowing before hand that there isn't optimum amount of air space, won't I have a higher risk of blowing the speakers? I've been told with 10W3s that if I put them in an enclosure with not enough air space, that they will make a popping noise.

 

Havent had much experience with the W3 jsut the W6s and W7s