Re: Port Questions
The area (h x w) of the port is important. The three things that change tuning are port area, port length, and NET box volume. As you increase the port area the length of the port must also increase to keep the same tuning. I use WinISD to let it calculate this.
If you give details of the box, sub, and amp. I can help you with how big the port needs to be.
HU - Pioneer
Front Stage - Old school MB Quartz run off a JL e2150
Rear Stage - Stock - well one works, LOL
Sub - Tang Band 740C in between the front seats
Sub Amp - A tiny Kenwood. - because it fits under the seat.
Total Spent on everything $50.