Alpine SPS-406 Speaker, 45 W RMS, 140 W PMPO, 2-way, 2 Pack - Walmart.com
Alpine 150W 2Way 4"x6" 4x6 SXE Car Door Shelf Speakers | eBay
Alpine SPS-406 4 x 6" Type S 2-Way Coaxial Car Speakers
Alpine SPS-4629P 4"x6" 2-way Plate Speakers at Crutchfield
Amazon.com: Alpine Type R Bundle R-S69.2 6x9 Car Audio Type R Series Speakers 600W Coaxial Pair with Harmony Audio Sound Dampening Speaker Kit : Electronics