I used to be into car audio in the mid 90s. When I was big into car audio and working at a shop doing installs and sales, a little Autotek amp that was tiny was a big deal, Svaard came out of nowhere and was the first real "no name" brand that came out of nowhere and took on the scene that I can remember, and I think that has continued since?
I've loosely followed stuff since, but have only done aftermarket head units and drop in speaker replacements if anything, in my wife and my cars over the past couple of decades. I have a killer home theater setup that I kind of nailed. I was enjoying it recently, and it reminded me of how I used to always have that level of audio in my car.
So, my last really unique install was an 8" sub that replaced the armrest in the back seat of my car at the time. That solo 8 in a tiny box did great, but I never threw a lot of power at it, and I think the box was always too small (even though I specifically found a sub that could work in a tiny box). I knew a guy who had a car with subs that fired at your back, behind the seat that always hit so hard, and provided that kick I really love. So, fast forward to today, I drive a 2011 WRX sedan. I've decided I want to build a box that basically turns the rear footwell into a big box. It doesn't all have to be a chamber, but it will be topped with a piece that fits up against the rear seat surface. How would you all approach this? Design the box to fit the space, then worry about finalizing the interior space via some other means? How would that look? is there a modern solution to this? I did this as a teen, so while I have experience in it, I guarantee you I didn't do stuff great back then. How would you all port something like this? I'll upload some designs at some point, but to get this started, the base would be roughly 18"x8", so I'm wondering if porting from the side of the box would work since that's my longest side? The speakers would be facing the seat back, and I was thinking the ports facing inwards towards the centerline of the car. I'd probably cover this area and connect the two side across the hump in the middle, but port into the open air below that. Hopefully this makes sense.
What do you all think about this design? I'll probably hide the amp under a seat or somewhere on the box where it's not seen if that works out. Realistically I won't be starting this for a while, I think I have a blown head gasket, so, priorities. This will definitely be budget, and flash means nothing to me as I will be trying to make it pretty stealth as far as the final look (carpet the box to blend in with the seats, etc. I've done some 8" sub research, and it really just seems to depend on how much money and wattage you want to spend. Right now, I have no subs in my car, so, lets be realistic. I'm thinking like $500-700 for subs and amp is what I'd like to spend, not counting wood, carpet, wiring, etc. So, any ideas you all have for subs and amp, or even different size subs, etc. I've heard about some 6.5" subs that get low apparently?