Well, you fellas gave me a LOT of material to work with which I vastly appreciate. I spent half the nite researching all your suggestions. After gathering info specific to my parameters and scouring the interwebs for reviews and opinions, I believe my best choice will be the RE SE12-D4.
Thanks for all your replies. I'm stoked to get my hands on one and hook it up.
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I'm including my notes in case anyone else can benefit from them as well:
Phoenix Gold RSDC 124 12" Dual
Power Handling: 600W/1200W [RMS/Peak]
Sealed Enclosure: 0.72 - 1.17
Cost: ~$130 [
eBay]
RE Audio SE Series SE12-D4 12" Dual 4ohm Subwoofer [sE12-D4]
Power Handling: 600W/1200W [RMS/Peak]
Sealed Enclosure: 0.75 - 1.0 [optimal]
Cost: $165 on
eBay
Notes: watch the gains
http://www.reaudio.com/
ALPINE SWX-1243D 12" TYPE X
Power Handling: 500W - 1000W RMS / 3000W Peak
Sealed Enclosure: 0.65 - 1.25
Cost: $219 on
eBay
RD [Revolution Design] Audio Sonance Series SO12D4
Power Handling: 700W
Sealed Enclosure: ?
Cost: ~ $250
Notes: possibly made by Atomic Speakers?
http://www.rdaudio.net/
SI [stereo Integrity] Mag D2 - only available in Dual 2ohm
Power Handling: 600W - 1000W RMS
Sealed Enclosure: 1.0 [optimal]
Cost: ~ $250
Notes: 4-6 weeks delivery time
http://www.stereointegrity.com/
SoundSplinter RL-p 12" Dual 4ohm
Power Handling: 500W - 1000W RMS
Sealed Enclosure: 0.95 - 2.0 [1.35 optimal]
Cost: ~ $300
Notes: out of production / sold out / hard to find
http://www.soundsplinter.com/
FI SSD and Q Series 12" - only available in Dual 2ohm
Notes: order w/ copper coils
http://www.ficaraudio.com
T3 Audio TS Series
Power Handling: 600 Watts RMS / 1200 PEAK
Sealed Enclosure: 1.3
Cost: ~ $300
http://www.t3audio.com/
Audiopulse EPD412 EPIC 12" DVC Subwoofer 4 Ohm [suggestion was TC-9]
Power Handling: 600W
Sealed Enclosure: 0.5 - 1.2
Cost: $255 at
partsexpress.com
Notes: TC Sounds went bankrupt, existing stock sold to
Parts Express = TC-9 no longer available only AP "Epic" [Audio Pulse is the "evolution" of the TC Sounds product line]
http://www.audiopulse.com/