Alpine - SBG-1244BP Ready to use Band Pass Subwoofer (4Ohm)
Alpine R-W10D4 Type R 10" Dual 4 OHM Subwoofer with GTR-601 Mono Subwoofer Amplifier 600 watts RMS x 1 at 2 ohms - Creative Audio
Amazon.com: Alpine S-W12D4 Car Audio Type S Dual 4 Ohm 1200 Watt 12" Subwoofers with Sub Install Kit Package : Electronics
ALPINE Status HDA-M80 800 Watt High-Resolution Mono Amplifier Car Audio Amp | Audio Savings
Alpine HDA-M80 Status Series Mono Subwoofer Amplifier, 800 watts RMS a — Automotive Sound and Protection
Car Enclosed Subwoofer 12 "30 Cm Alpine Sbg-1244bp Sound Electronics Columns 89.8db Subwoofers For Cars Acoustics Auto Audio Parts Components Speaker - Subwoofers - AliExpress