DD Audio Redline 615d D4

- 15″ subwoofer - 2.5″ voice coil wound of Made in USA wire - 2x 4 ohms - power handling 600 W RMS, 1800 W Peak - weight: 9,5 kgs - mounting diameter: 353 mm - mounting depth: 178 mm - x-mech: 60 mm - x-max: +- 13 mm - fs: 26,92 Hz - qts: 0,6797 - vas: 114,4 litraa - recommended ported enclosure: 85-142 liter ( NET ) - recommended sealed enclosure: N/A.