need help with box for hdc315 (copper coils)

[RangerDangerV2 5,000+ posts]

I need some help with a ported box for an hdc 315 with copper coils. All I really would like to know is the size of the port (square) and the volume of the box.

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[pro-rabbit 5,000+ posts]

They have specs on their site for them. One thing I would change is the tuning. I would bring it down lower.

 

[bgowdy 5,000+ posts]

id go about 4.5 cubes on it after port placement

 

[RAM_Designs 5,000+ posts]

If you want loud while still being able to extend reasonably low, do 4-4.5ft^3 and 60-70in^2 of port with a 33-35hz tuning.