Does anyone have forward facing 12" subs in an F-150 SuperCab with flip forward seats (97-99)? With the subs facing down they're creating so much energy that the bottom of the truck appears to be flexing 1/8" or more when they really hit. Obviously, this is creating enough noise outside the truck that I can hear it inside.

However, I can see the problems associated with trying to create a forward facing enclosure. Airspace and support for the seat above being the obvious two if the box was canted. Although if somesome could design an innovative solution to the problem they could probably make a mint selling the boxes...

MTX500D
2 DiamondAudio M5 12's
.88ft^3 gross airspace/spkr

 

Got a sunroof? Brings new meaning to "down firing"!

Seriously though, I'd imagine you're bumping up against the limitations of physics here. If you are flexing your floorpan with the woofer output you are putting some pretty amazing energy into the the cab. Add the cabin gain to that and I don't think I'd want to be inside when those 12" babies HIT. I'd fear for my eardrums! Then again, I'm an old phart who fondly remember when Jensen Triaxs hit the market.

You might want to look into some of the R&D around 3rd order bandpasses and tuned bass horns. I don't know a whole lot about this area, but Bose got a lot of mileage out of being able to design a long tuned port around a fairly small driver in a modest amount of space. Maybe with some sort of parallel downward wiring drivers with the airspace between linked isobarically, and the backside of the drivers tuned via some sort of extended port which wraps around the back of the cabin and up over top of the seats ... ?

hmm.... how are your fiberglass or carpentry skills?

 

snoopy, I'm mortgaging my ears for now. Hopefully, cochlear implants will be as routine as the breast ones within a few years. I wouldn't be particularly fond of going under the scalpal, but I'd just be paying the piper.

Besides, working on our farm in high school and doing lots of shooting has damaged my hearing more than any stereo I've ever listened to. I'm just finishing the job I started ten or twelve years ago.

 

Hey, it's cool. Enjoy your music as best you can. I rocked I *** off when I was younger. Ringing ears was a sign of a 'good time'. I LOVE music, but these days (late 30s) I realize that I also LOVE to be able to hear. Thank goodness I've only lost a few dB of hearing over the years.

Regarding bass: I fondly remember installing a pair of 8" subwoofers, an ADS powerplate, and some Pyle compression horns in my brother's 81 RX-7 back in 1983. Back then I thought this was great bass. Now everybody wants dual 12" woofers and 500W in their car. All I hear on the street is "thrummmm.. BOOOOMMMM...thrummmm... BOOOMMMMM." Is this music? I dunno. I guess it depends on your style of music. Just remember - if it's your ears - it's all about the music. High dB destroys eardrums regardless of the frequency.

Sorry to sound like such an old timer.

ymmv, of course. Enjoy your music for as long as you can. Long live rock (IMO).