The second sub box fabricated in the 1990's out of 1" Medium Density Fiberboard that came from a black television stand . Two separate sealed chambers about 1 cubic foot each. The inside seams are sealed with fiberglass cloth and resin. Added 1 1/4 pounds of fiberglass insulation on each side. Boston Pro Series 12" subs weigh 25 pounds a piece. Had to replace the surrounds a couple of years ago. Labor of love. That sub box is one of two sub woofer systems in the truck. It sits between the two seats and plays 40-80 Htz.
Mid Range and Tweeter Pods. They are asymmetrical and aimed at the drivers ears. They are angled to match the windshield pillar as to not to obscure any visibility. Boston Pro Series 5 1/4" and 1" Neo Tweeters Generation one. Not quite finished yet. Have to move the tweeters up one inch and the mids up as close to the tweeters as possible. They are set on axis at ear level. Then they will be covered in the same black matching carpet. Can also see the mid-bases in the installed.
Started with Alpine W910 and then tried Pioneer P99RS. Can see photos of both installed. Didn't care for the SQ of either one. Ended up with old school Alpine
9835 for now. Sorry for the sideways pics.
I'm surprised you didn't like the p99, it didn't seem to have a sonic signature that I could find..the alpine screen headunits do though.
The Pioneer to me sounded too digital. Too harsh. Grating on my nerves.
The Alpine touch screen had nice features. But it did so many things, like navigation, back up camera, video, phone, etc that I found the sound quality lacking. It sounded good, but not of the quality of the Alpine Head units of the late 1990's early 2000's.