The Sound Town STLF-630 is a 6.5” universal replacement driver for PA/DJ woofers. It is compatible with Sound Town PA speakers and compatible with other brand speakers with a 6.5" woofer. The driver comes with 8-ohm impedance and has a frequency range of 70-5K Hz with a sensitivity of 90dB. It has a built-in pressed steel chassis and has a paper cone with cloth edge. With 80W RMS power handling capability, the STLF-630 delivers superb sound and makes a great replacement woofer for your PA/DJ cabinet.  FEATURES 6.5” Pressed Steel Frame 1.5” Voice Coil and 30-oz Magnet Produces Superb Sound 80W RMS Power Handling Capability SPECIFICATIONS Details Model STLF-630 Resonance 100 Hz Nominal Basket Diameter 6", 152.4 mm Usable Frequency Range 100 Hz - 4 kHz Nominal Impedance* 8 Ω Sensitivity* 89 ± 3 dB Power Rating*  Magnet Weight 30 oz  Program Power 50 W Voice Coil Diameter 1.5", 38.1 mm  Peak Power 100 W   Thiele & Small Parameters Resonant Frequency (fs) 100 Hz Compliance Equivalent Volume (Vas) 4.56 liters/0.16 cu ft DC Resistance (Re) 6.4 Ω Mechanical Compliance of Suspension (Cms) 161.4 mm/N Mechanical Q (Qms) 3.36 BL Product (BL) 6.11 T-M Electromagnetic Q (Qes) 1.5 Diaphragm Mass Inc. Airload (MMs) 13.0 g Total Q (Qts) 1.055 Surface Area of Cone (Sd) 141 cm2 Mounting Information Overall Diameter 6.6", 167.6 mm Mounting Holes Diameter 4-0.2", 4-5.1 mm Depth 3.2", 81.3 mm Net Weight 3.2 lb, 1.45 kg Baffle Hole Diameter 5.6",142.2 mm Shipping Weight 3.9 lb, 1.77 kg Installation Position Diameter 6.2", 157.5 mm   Materials of Contruction Coil Construction Round copper Cone Composition Paper cone Coil Former Aluminum Cone Edge Composition Cloth edge Magnet Composition Ferrite Dust Cap Composition Paper cap Basket Materials Pressed steel   Warranty/Certifications Manufacturer Warranty 1 year   Â