Our newest and largest coned driver, the RL-p18 is downright astounding for home theater use, particularly in large-low-tuned vented enclosures or infinite baffle alignments. Taking into account the solid stats on the Premium Series home page, the RL-p18's beefed up 215 ounce magnet structure, dual 8.5" spiders and upgraded tall NBR rubber surround make way for absolutely insane low-frequency SPL capability!
Dual 4 OhmMeasurements
Qts: 0.493 Mounting Depth: 26 cm Qes: 0.554 Total Depth: 26.5 cm Qms: 4.500 Outside Diameter: 46.7 cm Fs: 21.5 Hz Weight: 41 lbs Re: 6.26 Ohm Magnet Width: 18.8 cm Ls: 4.341 mH Mounting Cutout: 43.2 cm Rp: 10.27 Displacement: 0.2 cu ft Vas: 276 L Mms: 373 g Cms: 137.7 u Bl: 24.25 T*m SPL: 89.25 dB Sd: 0.1188 m^2 Xmax: 27.4 mm
500 - 1000 watts RMS range
Acceptable: 4.0 cu ft - infinity net volume sealed 4.25 - 20.0 cu ft net volume vented, Fb = 14 - 31 Hz Optimal Home: 7.0 cu ft net volume sealed 12.8 cu ft net volume vented, Fb = 18 Hz 18 cu ft net volume vented, Fb = 14 Hz Infinite Baffle Optimal Car: 4.0 cu ft net volume sealed 5.0 cu ft net volume vented, Fb = 27 Hz