13TW5 DRIVER SPECIFICATIONS:

• Free Air Resonance (Fs): 27.52 Hz
• Electrical "Q" (Qes): 0.511
• Mechanical "Q" (Qms): 11.230
• Total Speaker "Q" (Qts): 0.489
• Equivalent Compliance (Vas): 2.10 cu. ft. / 59.47 liters
• One-Way, Linear Excursion (Xmax)*: 0.383 in. / 9.7 mm
• Reference Efficiency (no): 0.233%
• Efficiency (1W/1m)**: 85.87 dB SPL
• Effective Piston Area (Sd): 98.256 sq. in. / 0.0634 sq. m.
• DC Resistance (Re): 2.793 ohm
• Nominal Impedance (Znom): 3 ohm
• Thermal Power Handling (Pt): 600W
• Driver Displacement: 0.052 cu. ft. / 1.47 liters
• Net Weight: 18.6 lbs. / 8.4 kg

* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.

** Efficiency (1W/1m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is "louder".

*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same. Nominal Diameter: 13.5 in./343mm

Overall Diameter (A): A1: 14.2 in./361mm and A2: 13.0 in./330mmMounting Hole Diameter (B) : 12.5 in./318mmBolt Hole Circle (C): 13.5 in./343mmMagnet Diameter (D): 6.75 in./171mm

Mounting Depth (E): 2.54 in./65mm