The Sound Town STLF-18120DR is a 18" universal replacement woofer for PA/DJ speakers; it is compatible with the Sound Town PA subwoofers and subwoofers of other brands which need a 18" low-frequency driver. The woofer comes with 8-ohm impedance and has a frequency range of 35 Hz - 2 kHz. It is built in a cast aluminum chassis and has a paper cone with cloth edge. With 500W RMS, 1000W peak power handling capability, the STLF-18120DR delivers massive and deep bass and makes a great replacement woofer for your 18-inch PA subwoofers. FEATURES 18" cast aluminum frame 500W RMS, 1000W peak power handling at 8-ohm 35 Hz - 2 kHz frequency response 4" voice coil and one 120 oz magnet produce super sound SPECIFICATIONS Details Model STLF-18120DR Resonance 35Hz Nominal Basket Diameter 18" Frequency Response 35Hz - 2kHz Nominal Impedance 8Ω Sensitivity 98±3dB Power Rating 500W RMS Magnet Weight 120oz Peak Power 1000W Peak Voice Coil Diameter 4" VC Thiele & Small Parameters Resonant Frequency (fs) 35Hz Compliance Equivalent Volume (Vas) 230.73 liters DC Resistance (Re) 7.0Ω Mechanical Compliance of Suspension (Cms) 97.945 mm/N Mechanical Q (Qms) 1.726 BL Product (BL) 27.32 Tm Electromagnetic Q (Qes) 0.472 Diaphragm Mass Inc. Airload (MMs) 247.92 g Total Q (Qts) 0.371 Surface Area of Cone (Sd) 1288 cm2 Mounting Information Efficiency Bandwidth 68 Baffle Hole Diameter 16.85", 428mm Sealed 87.06 liters / 3.07 cu.ft. Installation Position Diameter 17.6", 442mm Vented 163.64 liters / 5.78 cu.ft. Mounting Holes Diameter 8-0.244", 6.2mm Overall Diameter 18.2", 462mm Net Weight 25.1lbs, 11.25kg Depth 8.13", 206.6mm Materials of Construction 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 Die Cast Aluminum Dimension & Weight Product Width (in.) ∅18.2" Package Width (in.) 21.9" Product Height (in.) --" Package Height (in.) 21.9" Product Depth (in.) 8.1" Package Depth (in.) 12.2" Product Weight (lb.) 25.1 lbs Package Weight (lb.) 33.0 lbs Warranty/Certifications Manufacturer Warranty 1 year
