Alpine Halo R2-Series Dual 10" Voice Coil 4-Ohm Loaded Subwoofer Enclosure Black R2-SB10V - Best Buy
2) Alpine W12S4 12" 1500 Watt Car Audio Subwoofers + Sealed Sub Box Enclosure - Rockville Audio
Amazon.com: Alpine Bundle Compatible with Universal Vehicles S-W12D4 Single 12" Loaded Sub Box Enclosure : Electronics
Brand new alpine subs sound extremely quiet. The amp is very small but was powering similar watts subs much louder at the same output level. I'm breaking them in but I feel