right now i have two infinity references. they sound great but i think i want a little more. so here is whati have found

2 JL W3v2
2 Crossfires
2 Alpine Type R
or stay with my infinitys

(all 12")

i have a concept 1252 amp which will be powering what i set up. the amp over powers my infinitys as it is now. what do you all think will be better

 

get a kicker solo L5,L7 they will hit very hard i Have a 15" with a 1100 watt phoenix amp it goes very lound. alpine type R hits well to

 

2 JL W3v2

And Xtant amp, you can't go wrong, it will shake your bones loose.

 

your amp puts out 400wrms @4ohms mono so you will want something that you can wire to that impedence.

there are a lot of people in the same boat as you for buying subs. You need something that works in a small box with a good mix of SPL/SQ and works well with minimal power.

these will all work for you:
JL w3s
alpine type rs
infinity perfects
1 adire shiva (only available in 8 ohm DVC)
kicker L5s (i think the L7 would work better with more power)
Elemental Designs e12Kx
Digital Designs 2500 series

if it were me i would go with either the adire sub, ED, or DD for two reasons: being unique (not many people around will have these brands), and it may deter thieves from stealing your setup if they've never heard of it

 

1 adire shiva (only available in 8 ohm DVC)

my vote! Price cant be beat. Whats it like $125?
not the best as far as looks but who cares!
A VERY good sub. wire it for a 4 ohm load.

Also ED has the k line, they have a 12 for $85 if im correct.

 

ya the shiva was on for $125 the last time i checked...i had a single tempest about a year ago and it was excellent. put up a 142.2 @27hz legal with about 400 watts

 

Im making a fiberglass box for my car. Im thinking of a shiva.
1. It doesnt need 1000's of watts to sound good so the two amps i have now can stay. (they are 400 rms(component amp)( and 600 rms bridged, used for sub)

2. Doesnt cost hundreds and sounds very good.

 

600 watts will be plenty for a shiva...just make sure you have a subsonic filter on it so it doesnt bottom out. My tempest finally blew after about 10 months or hard abuse with 400 watts in huge low tuned boxes. It blew as i was playing a 20 hz test tone