Coutout does not fit standard 10' subs
I purchased this frkm another retailer to fit a kicker sub i got from Crutchfield. The box is very nicely constructed. But the cutout for the sub is 9 3/4' and most 10' subs need a 9 1/8' cutout. I ended up having to get an adapter ring to neck down the opening which in turn defeated the purpose of being a down firing box due to the speaker now sitting 1' further out. The box was designed to be a perfect fit for the pioneer shallow subs so keep this in mind before you purchase. If you dont mjnd a little work to make it fit its a great box for a shallow sub. If not look for another box because i would not use the pioneer shallow sub just to use this box it just can not go low enough to sound like a sub should.
Pros: Good build quality
Cons: Designed by pioneer to only fit their non standard sized shallow subs. Has to be modified to fit standard subs due to cutout size.