ECW120 12" Encore Comp Sub + ECD1500.1 Class D Amplifier + Wiring Kit Encore 12" 3000W High Excursion Subwoofer + Encore Amplifier The VM Audio Encore 10" high excursion subwoofer was designed by our professional team of engineers for exactly this type of consumer. Paired perfectly with this amplifier, this ten inch competition subwoofer will blow you away. Features like the linear flex spider ensure the clarity of the low frequency notes while the dynamic high magnitude cone increases the precision of this incredible subwoofer. Every aspect of the Encore series 10" subwoofer was built to preserve the integrity of the low frequencies in your music while still giving you the power you want to crank up the volume.