Not good with math on boxes

[sicrides6]

4ft 10 in long 25in tall and 24in deep it can go taller but would like to stay below 30 inch tall. Would this be enough for 4 hdc315 to tune around 32

[Joe X]

You need some more, what's the vehicle?

[sicrides6]

1998 chevrolet c1500 extended cab

[diegoclass2010]

your going to have make it taller than 30 around 34 to fit the speakers in the baffle, or you can also zig zag them and it might work