Audio Systems: Best choice for a system, ford f 150, pioneer mosfet


Question
I'm not sure of the exact length of my cab, but the box(es) could easily be 5, 5 1/2 feet long (combined) if the need be. It can stretch the length of the cab behind the seat, theres nothing else back there.
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Okay, first of all, thanks for working with me here, I appreciate it greatly. To answer your questions...
I listen to mostly upbeat hip-hop with the occasional classic and new rock, (no hard rap - can't stand it)
If I had to choose, that very loud "death rattle" is what I would sacrifice. I want a sub(s) for deep, hard hitting, smooth, quality bass, and not necessarily deafening.
Very little room behind the seat to play with, I once had some speakers in a box behind it though. The box's measurements were: 14" tall, 5" deep at the top, and 8" deep at the bottom. That is pretty muck the max, the box could be taller, but would have to be narrower at the top.
I guess I'm willing to pay up to $150 per a good sub but I think $80-$100 is more of my comfort zone
I'm not too concerned with being heard a block away, although I guess it wouldn't hurt anything - I'd rather have it sound good inside more that outside so to speak
My pickup has only one bench seat and I'm planning to put the sub(s) behind it between the seat and the back of the cab
I hope I've helped you help me, and again, Thanks!

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Okay, I am the owner of a 1994 Ford F-150 regular cab. I currently have installed: Pioneer Mosfet 50x4watt head unit, two 6x9 260watt and two 6" 220watt Pioneers in their factory locations. It doesn't have any bass and bottoms out easily. I am not nessecarily looking for extra loud, but more of a steady hard hitting subwoofer(s). I started looking for a subwoofer (or two) for behind the seat and found that there are overwhelming choices. After speaking with a representative of a local audio shop, he had me set on buying 2 Infinity Reference 1050w 10" 4-ohm subwoofers. Now I don't have any idea how different subs sound in comparison with each other and I had intended on buying 2 Punch Stage2 subs but was told by him that they are not a good subwoofer. And to add to all my confusion, I was also told by him that a measure of watts on a sub means nothing, the only thing you need to look at is the RMS wattage. Also, he explained how I should mate an amplifier to th subs in jargon that I barely understood. And thus I am comletely stuck in a maze of audio components with no clue what type of speaker, sub or amp that fits my application. So I ask of you, what is your professional opinion of a good system that I can fit into the very limited space behind my seat that will have solid steady sound, longevity, and won't break the bank.
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great questions! and well written may I add.
Sounds like the guy was probably giving you some good advice but maybe overwhelmed you with detail.  you should match the total RMS wattage of the subs to the amplifier.  And depending on how its wired and such it creats different "loads" on the amp.  this is where it gets more complicated since there's math and stuff and this is extreamly important to match up as well.

Basically the way to do it right is to pick the right subs for what you want.  then match the amp.  I'll match the amp for you once we pick the right subs if you want?

As for the infinitys being better or worse than the fosgates,  Id say they're pretty comparable, just different. a bit of an apples to oranges comparison.

The proper way to do this is to access your needs.  If you answer these questions for me I can match up a system you'll love.

1. what styles of music do you like?

2. if you had to sacrifice quality/loudness/price which one would you sacrifice? in other words, is your goal more quality of sound based, or more quantity of sound based? and if you need both, you're going to have to pay more to have your cake and eat it too.

3. how much room do you have or are willing to give up (measurments would be GREAT!)

4. your budget (min/comfortable/max)

5. also what do you consider enough bass that you want to add?  do you just want the bass to fill in where the existing speakers aren't doing the job, or do you want to be heard a block away?  or somewhere in between?  etc.

6. location of the subs (trunk, under rear seat, behind front seat, etc.)

See, believe it or not, the box the subs are in has a TON to do with how they'll sound, more than what brand the sub is.  so if I know your application and prefrence and space, we'll see what box is appropriate, then we'll find a sub that performs well in that box and for your needs, then the amp will simply just match that (it'll fall into place at that point)

I also would bet that if you have "no bass" as your message says, with 4 6x9s and 2 6" speakers that some of them are "out of phase" or wired backwards.  if you installed them yourself and didnt pay attention to getting all posatives to posatives and negatives to negatives on every speaker, then the bass will be very poor.
you should check that before getting anything.  if you dont know how let me know and I'll work with you to get that right.
So answer these 6 or 7 questions (sorry) and I'll help you build a GREAT system.
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Ok great!  thanks for answering all my questions.  So basically this is what you answers spell:

Small sealed box.
Quality over quantity.
and a price range that's perfectly acceptable

so,  You gave me the height and 2 depths which is great but the max length would complete the equasion here.   if you could provide me the max length then I could calc the volume and pick you out the perfect stuff for the space.

Let me know.  

Answer
yeah, the longer the better to make up more space in that box.
so if you can build the box 5.5 feet long that's 66" long on the outside,
minus the thickness of the wood 66" - 1.5" (.75 each side) = 64.5" internal lenght
so if your max height is 14" tall that would be 12.5" internal height. so:

64.5" X 12.5" = 806 sq inches.

now if it was angled, with 5" top and 8" bottom, then again, we subtract off the thickness of wood and get 3.5" top and 6.5" bottom.  averaged together is 5" so:

806 sq inches X 5" = 4030 cubic inches internal space. which is 2.33 cubic feet.

You know what subs sound BEAUTIFUL in 1 cubic foot each? these guys:

http://www.mainstreet-audio.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=

they are designed for quality sound and work great in this size box (2 of them) they are $200 a pop but they're worth it.  I'v used them before and loved their sound.

when you cut the holes for these subs in the box, cut them so the sub would be at the bottom of the box, not in the center, the extra depth will help.
what do you think?