Alrighty, so I've got a few question. I'm building a ported box in my G35 Coupe and I'm using a round port instead of a slotted port. I'm planning on using these ports. I've been using this calculator to do it. Right now I've got a 2.0 cuft box, I plan on using 2 ports, and I'm tuning it to 29hz. After clicking calculate, it gives me the vent length of 9.13 inches. Does this mean I'll cut both of the cylinders to that length? Or where exactly does that measurement start and end? Also, any tips on doing a flared port box? Slotted was easy, but I wasn't sure if this is any more complicated. Also, what panel of the box should I have the ports for the best results? If it matters, it's an Fi Q 12 being powered by an AQ1200D.

I'm a pretty big noob to car audio these days, would there be any suggestions rather than doing what I'm doing?

Go here and it will give you the information your looking for.

I would go with port and sub rear firing. Port to drivers side.

Edited June 1, 201213 yr by 98GMC