Soundstream Tarantula T7.154 15″ Subwoofer 900 Watt

  15″ Dual 4 Ohm Tarantula Series Subwoofer Power Handling: RMS: 900 watts Non pressed paper pulp cone Polyether foam surround 2.5″ dual 4 ohm 4 layer voice coil Vented 12mm t-yoke and frame Sensitivity: 89.1dB High temperature tollerance adhesives resist thermal failure Aluminum dust cap fins dissipate heat and strengthen the cone Dual poly-cotton suspension dampens violent accelerations SPECIFICATIONST7.154 Fs (hz) 29.22 Qms 0.522 Vas (ft^3) 3.649 Cms (mm/n) 0.106 Mms (g) 284.8 Xmax 15 Xmech 22.5 Dia (in.) 12.79 Sd (in^2) 128.6 Vd (ft^3) 0.066 Qes 0.65 Re (ohms) 7.22 Z (ohms) 8 BL 24.05 Pe (watts) 900 Qts 0.58 No 0.382 1w/1m SPL 87.77 VC DIA (IN)  2.5 VC (Ohms) DVC4 M-vd (ft^3) 0.27 Cut-out 14.000 Depth 7.75 Recommended Enclosures High Tuning  Sm Sealed 1.50 Qtc 1.079 F3 44.14 Med Sealed 2.00 Qtc 0.961 F3 41.11 Lg Sealed 2.50 Qtc 0.887 F3 39.56 Low Tuning  Sm Vented 3.00 port (2)3×10 Fb 33.96 F3 32.12 Med Vented 4.00 port (2)4×15.75 Fb 32.08 F3 28.88 Lg Vented 5.00 port (2)4×13 Fb 30.23 F3 26.33