I am designing a sub enclosure to go under the back seat of a truck for a friend. I need the help of you guys more familiar with car sub design. There are two variables which I need advice. Subwoofer driver choice and Box internal volume and alignment type. The maximum volume is already determined by the rear seat height and is 2.25ft^3.
- The enclosure maximum internal volume is 2.25ft^3.
- He wants to spend approx $100-125 for each driver assuming two drivers in this enclosure so figure $250 budget for driver(s)
- He wants to use a Kenwood KAC-9104D he already has.
- His listening preference is Rock, Metal, Classic Rock. Think ACDC, Metallica, Nickelback, shutup i know this music is not very popular these days.
- Mounting depth is shallow at only 6"
Now he like the Kenwood XR-W10F
and I modeled a sealed enclosure in the volume he has. This driver likes a bigger box for flat response. It has a high Q bump at 50-60Hz, but since he likes rock music I thought he migh actually like that bump for the kick drum. I also modeled ported but it didn't yield any significant output and introduced more issues with excursion so I thought better to stick sealed.
I am pretty saavy with HT subwoofers but as far as Car audio i'm a little green. I don't know as much about small cabin gain in a car, and not sure how much extension is really needed in a car sub either so ADVICE IS GREATLY NEEDED. His amp choice works with those subs when wired to 8ohms. I assume the amp is capable of 250WRMS @ 8ohms based on its specs and excursion is under control with 125W/driver in that sealed volume.
He hasn't bought the subs yet, I just wanted to make sure nothing stands out as "just plain wrong" with this design before we move forward and see if another driver choice might work better.