RLJ676

Alright, I have a MTX Thunder 2150 and MTX 7000 12 in sealed pre-fab as a temporary setup in my 08 extended cab Sierra. Signal is off stock Bose HU rear driver speaker on a LOC. Needless to say I want a bit more oomph along w/ a my passenger seat back. Also, I believe I'm getting a full signal there but if someone knows otherwise please let me know. So I am willing to give up my rear center seat space, and am looking to do a small box behind the center console rather than downfiring under a seat. I am thinking a FI SSD 10 combined w/ a used MMATS, or possibly a new American Bass amp around 1000 to 1250 rms (and yes, I'll consider a used Sundown). Want to keep it US made but that is a bitch on the amp. Using the Torres calc I have come up w/ a box that should yield .96 cubes after displacements, tuned to 33.5. This is a 14.5 wide, by 9.5 deep by 19 high box, with the top widened out by .75 on each side to fit a 10 firing up. It has an 3 in aero port 15.5 in long, w/ 10.5 external. This will come out the back of the box and fire back towards under the seat. Now my concern is the 3 in aero port not being enough area, as it comes to 7.36 per foot which is a bit low. However, I mostly listen to rock on the radio at moderate volume, and just want the ability to get nuts when I wanna show up a friends system or surprise someone. So will it be ok?

So I ended up w/ a SSD on Fi's recommendation for my box and power, just ordered today w/ free cooling, flatwind and leads. I also got a SAX 1200D on a great deal refurbed, might still get a MMATS depending on how this hits my stock electrical w/ big 3, but my alternator is fairly large in a full size truck.

I am putting bigger sub stage in my 08 EC sierra. These trucks have terrible floorboards under the rear seat, so the "only way" (short of custom fiberglass, etc) to get any space/depth was to build a box behind the console/in front of seat. It is sub up and external 4 in port going under the seat. It yeals a gross of 1.1 cubes, and can be tuned as low as 30. So, I am going back and forth between a Fi SSD and BL. It looks like this fits better in the BL's range of box size. I am going to run 1200 watts (stock electrical, wanna leave some room for midrange amp). So will the BL be both louder (higher efficiency) and perform better as the box is on the higher side of it's scale? The SSD would get the cooling option. I'd look at the Icon, but can't find anything for box specs. How would it do in this box relative to the SSD/BL? I listen to 90 % rock, but the goal here is to be able to get "loud" on rap to shock my not-really-car-audio-informed buddies haha (and get my bass fix) and adding some kick to my rock. Here are some pics of the rough box. Going in this:

Thanks!

Will you be posting here for us non facebook types haha? Thanks.

Unfortunately... yeah. Hell of a deal though, even I was shocked at 50% off a Door Pack. How about 40% off and I pay you now (or Fri not at 2:30)........? Midnight I can handle haha.

Since I'm in the Eastern time zone I only have to be up at 2:30......? Yikes.

The port is actually right at the rear passenger door. What is ideal distance, as I still have flexibility. I figure the sub is quite close to your head, and not to much further from the ceiling than in lots of sub up SUV setups. Certainly closer to a boundary than console enclosures at leg level. I can only go on my past experience. I have a 93 mustang cobra, hatch obviously. I've tried firing subs forward from as far back as possible and as well as on top of the rear seats (folded down) up, forward and to the sides. I was surprised at the lack of output. When I turned the box (sub and port facing the same way) pointing toward the back of the car, instant permagrin. You'll continue to hear people say "it's all in the install", " try it and see what works best for you" and "test, test, test". There's a very good reason for this. This could make you happy and that is what matters most. If you have a ported sub (in your home theater) try putting it in the center of the room, then place it with the port firing into a corner. You will experience a big difference in output. If you're loading the port off the boundary of the truck, it could work, I don't know and haven't tried it. Post back with your results so we can learn from you trial. Good luck! Right on. My home sub is corner loaded haha. But yeah, the port will be right in the corner so I hope that helps. The sub up may be less than optimal, but the truck just doesn't allow many options so it'll just have to do I guess.

How about a DC LVL 4, they list ported box size as 1 cube, right about where I'm at.

What size (relative to recommended) and tuning? I would expect the Icon to outperform the SSD, but the question is volume for me.

The port is actually right at the rear passenger door. What is ideal distance, as I still have flexibility. I figure the sub is quite close to your head, and not to much further from the ceiling than in lots of sub up SUV setups. Certainly closer to a boundary than console enclosures at leg level.

Thanks Shogen. Me neither......had to get creative and this is what I came up with. I think I'm capturing everything though to make it work. Most run sub down into the floor under the seats, but that is a tiny space, hard as hell to port, and limits sub depth and excursion which limits the power. I've read in reg cabs and other trucks that sub up port passenger works pretty well.....so we'll see. My reference points are few though. I have a MTX Thunder 7000 in a pre-fab sealed on 400 watts (of CL for $100 for that and 2 other amps) which is not nearly enough, had a vette w/ a SDC 2.5 10 on 900 watts (tuned too high) and a buddy w/ a sealed RF 12. None really have the output I'm looking for, so hopefully this bests them all. At a minimum I want it to be as good as the 2 Eclipse Al 10's on a PPI amp in an Integra I had 16 years ago, it was pretty solid, nobody believed it was 10's.

Is that for a ported box? Haha, hoping for someone that has experience w/ one or the other in a ported box this size. All you read is that the box is everything, so I'd like to pick the more optimal for my application. I'm pretty space constrained, so that's the box I can do. (or did) Fi makes it pretty confusing, they list 2 different box size ranges, one on tech page and one on regular sub page. Tech Page Sub Page SSD .9-1.5 .6-1.2 BL .5-1.2 .7-1.5 So which one really needs the bigger box? Would the 4 in aero port work better w/ one or the other?

Pics of the rough box. Still have to cut holes, paint/flare the port and carpet.

Under the seats in these EC's is pretty crappy, the floor ramps up in several spots quite a bit and there doesn't seem to be much space. Most it seems anyone can get out of one is .6 or so before displacement, and w/ shallow depth. Plus, why buy a cool sub to hide under a seat haha. Might be able to get something under there, I'll take a look at the pics and see what looks best. Here's some pics for now, mine won't be much better as my camera is terrible. http://trucks.about.com/od/2007chevysilverado/ig/2007-Chevy-Silverado-Photos/Two-Views-Silverado-Rear-Seats.htm The space under the seat is about 5 in high at front, back to 3 high 10 in deep or so. The floor also raises an inch under the seat, so on the box it's open between 1 and 6 in high. Well I just went ahead and built the box as I'm impatient like that (so Rick I haven't seen anything from you so you obviously don't need to check the pic I sent), ended up at .94 after displacement of a BL (biggest case, and where I'm leaning now) and I grabbed some 4 in thinwall pvc, fits just under the seat and running external w/ a 90 degree bend I have room to tune as low as 30. I'll just flare the ends myself on a bowling ball. Now I just need to figure out how to clean the edges and wrap it really well. My only concern is that the 90 is a sharp turn on the inside corner, so it isn't "perfect" but it should work.

Under the seats in these EC's is pretty crappy, the floor ramps up in several spots quite a bit and there doesn't seem to be much space. Most it seems anyone can get out of one is .6 or so before displacement, and w/ shallow depth. Plus, why buy a cool sub to hide under a seat haha. Might be able to get something under there, I'll take a look at the pics and see what looks best. Here's some pics for now, mine won't be much better as my camera is terrible. http://trucks.about.com/od/2007chevysilverado/ig/2007-Chevy-Silverado-Photos/Two-Views-Silverado-Rear-Seats.htm The space under the seat is about 5 in high at front, back to 3 high 10 in deep or so. The floor also raises an inch under the seat, so on the box it's open between 1 and 6 in high.

So in .6 cubes and not the depth to mount it? I was kidding about not putting it under there to look at it, but thanks.

Under the seats in these EC's is pretty crappy, the floor ramps up in several spots quite a bit and there doesn't seem to be much space. Most it seems anyone can get out of one is .6 or so before displacement, and w/ shallow depth. Plus, why buy a cool sub to hide under a seat haha.

That's what I was describing I can get some pics in the light tomorrow. As i described above is actually pretty straight forward, just a lot of external port.

Hi I'm assuming that this is the Rick that I have been speaking with via email. As I said to do a box in that space with the proper amount of port area will be difficult. A 3 inch port will not work well at all. Yep, that's me haha. It won't be easy no, but it's possible......might just have to do a stupid long 4 in aero. I assume that'd be enough area? Would need a 29 in all external 4 in which would end up at 32.8 hz and .98 after displacements (I will gain about .05 by expanding out the top to fit the 10). The port could come out about 10 in and then 90 degree for 19. What do you think? If you have any other ideas let me know of course.

How about AQ SDC's? Some used ones would be in budget, or 10's just over new. They get loud. Obviously their SQ could be improved upon, but doesn't sound like a big concern.