http://cgi.ebay.com/2-ALPHASONIK-PSW915-15-5000W-RMS-CAR-SUBWOOFERS-SUBS_W0QQitemZ390103119758QQcmdZViewItemQQptZCar_Subwoofers_Enclosures?hash=item5ad3f5378e&_trksid=p3286.c0.m14#ht_3950wt_996
http://cgi.ebay.com/DUAL-15-PORTED-VENTED-3-4-MDF-CAR-AUDIO-SUBWOOFER-BOX_W0QQitemZ360167241442QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item53dba3f6e2#ht_3151wt_893
Alphasonik is a bit of a flea market brand... their power ratings are inflated a bit.... not the best quality. I did have a lower end alphasonik years ago though, and it did do the trick.
The problem is, will you have enough amp power to supply them all that wattage? And if so, can you afford the high output alternator you will need since stock units cant really handle over 1500 or so watts?
That box is WAY too small for those subs... 1.5 cubic feet is more for 10's, your 15's will need AT LEAST 3 cubes ported, for EACH sub.
12 INCH PORTED SUB BOX VENTED SUBWOOFER ENCLOSURE LOUD!, TRUCK 12" PORTED SUBWOOFER ENCLOSURE VENTED SUB BOX, 10 INCH VENTED SUBWOOFER ENCLOSURE PORTED SUB BOX NEW, 15 INCH LOUD VENTED SUBWOOFER BOX PORTED SUB ENCLOSURE, Dual 10" Ported/Vented Car Subwoofer/Sub Woofer Enclosure/Box (2.4 Cubic ft.), 12" Dual Vented Ported Subwoofer Enclosure BLACK 12 Inch Sub Box FREE Tweeters, 12" Dual Vented Ported Subwoofer Enclosure GRAY 12 Inch Sub Box FREE Tweeters, JL AUDIO SLOT PORTED BASSWEDGE ENCLOSURE LOADED W/ 2 12W0V3 12" CAR SUBWOOFERS, 15" SINGLE PORTED VENTED 3/4" MDF CAR SUBWOOFER SUB BOX ENCLOSURE, 10" SINGLE PORTED VENTED 3/4" MDF CAR AUDIO SUBWOOFER SUB BOX ENCLOSURE, 12 INCH VENTED SUB BOX PORTED SUBWOOFER 43" PORT LOUD!, Atrend E15SV Single Car Audio 15" Vented/Ported Subwoofer Box Sub Enclosure, Atrend E10SV Single 10" Vented / Ported Car Audio Subwoofer Enclosure Sub Box, ALPHASONIK SINGLE 12" BASS SERIES 400W RMS LOADED CAR SUBWOOFER PORTED ENCLOSURE, ALPHASONIK PB112LE 400W RMS SINGLE 12" LOADED CAR SUBWOOFER VENTED ENCLOSURE BOX, Atrend Dual E12DSV 12" MDF Vented / Ported Subwoofer Enclosure MDF Sub Box, 10" Dual Ported / Vented Flat Pack Bass Subwoofer Enclosure / Box, 10" Vented 2 HOLE Sub Enclosure BLACK Carpet 3/4" Ported Subwoofer Box 10 Inch, Fierce Audio - 10" Dual Ported / Vented Flat Pack Bass Subwoofer Enclosure , 12" ALPINE TYPE R PORTED GREY GRAY SUBWOOFER SUB ENCLOSURE VENTED WOOFER BOX, 10" Dual Vented Sub Enclosure Carpet 3/4 Ported Subwoofer Box 10 Inch Gry Carpet, DUAL 12 INCH VENTED SUBWOOFER PORTED CAR SUB BOX 1" MDF, SINGLE 15 INCH VENTED SUBWOOFER PORTED SUB BOX 1" MDF!, PAINTABLE CUSTOM 15" VENTED SUBWOOFER PORTED SUB BOX, ROCKFORD FOSGATE DUAL 500W MAX 12" P1S4-12 CAR SUBWOOFER LOADED PORTED ENCLOSURE, ROCKFORD FOSGATE P1-2X12 PUNCH P1 DUAL 12" CAR SUBWOOFER LOADED VENTED ENCLOSURE, RHINO LINED DUAL 15" VENTED SUBWOOFER PORTED SUB BOX, BAZOOKA BT SERIES 8" 150W MAX NON AMPLIFIED CAR SUBWOOFER BASS TUBE ENCLOSURE, BAZOOKA BT8014 8" 150W MAX NON AMPLIFIED CAR SUBWOOFER PORTED BLACK BASS TUBE, JL AUDIO 8W7AE/8W7 SUBWOOFER ENCLOSURE/SUB BOX SINGLE PORTED/VENTED NEW, JL AUDIO DUAL 10" 10W3V3-4 1000W RMS CAR SUBWOOFER LOADED PORTED WEDGE ENCLOSURE, JL AUDIO 10W7AE/10W7 SUBWOOFER ENCLOSURE/SUB BOX SINGLE PORTED/VENTED NEW, JL AUDIO 12W7AE/12W7 SUBWOOFER ENCLOSURE/SUB BOX SINGLE PORTED/VENTED NEW, JL AUDIO 13W7AE/13W7 SUBWOOFER ENCLOSURE/SUB BOX SINGLE PORTED/VENTED NEW, 12" Single Ported Sub Box 12 Inch Vented Subwoofer Enclosure 3/4" MDF BXNV121-GR, SINGLE 10 INCH VENTED SUBWOOFER PORTED SUB BOX 1" MDF!, 10" Inch Dual Vented Sub Box GRAY Ported Subwoofer Enclosure FREE Tweeters, SINGLE 12 INCH VENTED SUBWOOFER PORTED SUB BOX 1" MDF!, ALPHASONIK BASS SERIES DUAL VENTED ENCLOSURE W/ BUILT IN DUAL 12" CAR SUBWOOFERS, ALPHASONIK PB212LE DUAL 12" 800W RMS CAR SUBWOOFER LOADED PORTED BLACK ENCLOSURE, MTX AUDIO ROADTHUNDER 8" SUBWOOFER VENTED TUBE W/ BUILT IN 120W RMS AMPLIFIER, 10" Vented 2 HOLE Sub Enclosure BLACK Carpet 3/4" Ported Subwoofer Box 10 Inch, 15" Single Vented Ported Subwoofer Enclosure GRAY Sub woofer Box FREE Tweeters, BAZOOKA BT6024DVC 300W MAX PASSIVE 6" DUAL 4 OHM PORTED CAR SUBWOOFER BASS TUBE, DUAL 12 INCH VENTED SUB BOX PORTED SUBWOOFER 40" PORT!, DUAL 15 SUBWOOFER VENTED PORTED ENCLOSURE SUB BOX U NEW, DUAL 12 SUBWOOFER CAR VENTED PORTED ENCLOSURE SUB BOX, SINGLE 15" SUBWOOFER VENTED PORTED ENCLOSURE SUB BOX, SINGLE 12" SUBWOOFER VENTED PORTED ENCLOSURE SUB BOX U, Lexus IS250 - Ported / Vented - Sub Enclosure Subwoofer Box - Tuned @ 32hz,
