- CARB compliant 3/4-inch MDF construction
- Silver Alpine embossed side logo badge
- Brushed aluminum finished metallic front baffle
- Dual 4Ω Voice Coils Wired in Parallel for a 2Ω Load (Compatible with R2-A75M)
- Threaded Subwoofer Mounting Inserts (for reversible subwoofer orientation)