4 8 inch subs in a bass tower

I'm in the early planning stages of builing a sub for my basement and wanted to bounce a few ideas arround.

It will be an HT sub 80% of the time. I dont need super bass just some low end for a more realistic feel. My room is 13w x 28d x 8h. I'm plan on building some LRC and some surrounds down the road.(simple MT's)

Looks are important. I've seen some interesting cherry cabinets with silver speakers on the gallery above and want somthing like that(mine will be veneer). I also like the taller speakers and thought that four 8 inch sub woofers would give me the sound and look I am going for. I would also consider 2 subs and 2 PRs.

Somethings I'm concerned about.

Can a plate amp push 4 subs?
Can I get to the low frequencies with this type of set up?
Am I going to pay much more for this set up then I would if I just used a single 10 or 12? (trying to keep this below 400)
I'm not sure what the internals will look like with 4 subs?
do I need to port?
What 8" inch sub is correct for this type of set up?
What type of amp is correct fo this set up?

I haven't seen to many 8" sub designs here so I wanted to post

This is my firt post in the DIY forum. So let me know if I left off any important info.

Yep, thanks, I've been looking for and example
Anglefire has something similar to what i was looking for. and the parts express gave me the idea of actually doing it. I'm just curious of the trad offs. of doing 8's vs a 12 or a 10.

Not sure I would do 2 cabnets but 3 tens sounds a decent trade to 4 eights.

good call. I dont think many plate amps are stable below 4ohm.

are you a UGA dawg???

Warmon, nice link. good learning materials there for newbies like me.

I've tried to model a few of these in WinISB but am not haveing any luck. what size box would I need for the 8's. I want it to be as tall and narrow as possible. Also want it to be ported.
Any links for what the Q's, L's, A's, B's, Etc mean. I've been using a Dayton 8 to model my box since I cant find the Tang Bang as a preload in WinISB. Also, I am not sure which Dayton 8 that means considering PE sell 3 different ones($ ranges from 19 to 91)

What size port would I need for these designs? I think I it want tuned as low as possible to maximize the low end output. I just dont know how you guys do this.

Oh by the way any silver woofer cones out there at a reasonable price? I could settle for painting the mounting brackets.

I've decided to go with a single 12". But want as slim a cabinet as possible. What can I get away with. I can go tall. ( This will allow me to use as a front firing or put on it back to be up firing behind a couch)

I still want as much pressure from the sub as possible as will looking for around 300-500 watts of power from plate amp.

Slight update on the room. The listening space is only 13x15x8 the back of the room is an office stairs and a hallway . I'll try to attach a sketch later.

2 Rythmics

I'm budgeting around $400 for sub+amp+extras considering i'll be upgrading my TV, Speakers, DVD, cabinets, chairs etc during this coming year. So, at this time a single Rythmic servo kit is even a stretch. I would like to add a second but feel that I would have great subs and under matched everything else and blow my budget. By this time next year I should be ready to add a second sub if I feel it's undersized. I just need to make sure that I go with a combo that will be around for a while if I want to build a matching set up next year.

At this point this is still an open discussion. so I'm revisiting all options and am open to all suggestion that are not a cube with a huge driver in the middle or a huge sono tube. those will not get the WAF.