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Title: Harmony Audio 12" Dual Subwoofer Enclosure & HA-A400.1 Amplifier Kit  
Category: Automotive Audio  
Brand: Harmony Audio  
Description: A complete dual‑12" subwoofer enclosure and 800W class‑D amplifier set for 2007‑2013 Chevy Silverado Crew Cab trucks.  
Details: Features sealed enclosures with 0.85 cu ft air space, 5" mounting depth, and an integrated HA-A400.1 mono amp with remote bass control and RCA adapter for easy

Price is $