BETA-12LTA Serie Standard American Empfohlen als Tieftöner für professionelle Audioanwendungen (kleine, geschlossene Monitorlautsprecher) oder als Tieftöner für PA- und Monitoranwendungen (Bassreflex-Gehäuse). SPECIFICATION Nominal Basket Diameter 12", 304.8 mm Nominal Impedance 16 ohms Power Rating Watts 225 W / Music Program 450 W Resonance 53.8 Hz Usable Frequency Range 48 Hz - 8 kHz Sensitivity 97.7 Magnet Weight 38 oz. Gap Height 0.313", 7.94 mm Voice Coil Diameter 2", 50.8 mm THIELE & Small Parameters Resonant Frequency (fs) 53.8 Hz DC Resistance (Re) 15.44 Coil Inductance (Le) 1.44 mH Mechanical Q (Qms) 7.22 Electromagnetic Q (Qes) 0.70 Total Q (Qts) 0.63 Compliance Equivalent Volume (Vas) 101.7 liters / 3.6 cu. ft. Peak Diaphragm Displacement Volume (Vd) 42.4 cc Mechanical Compliance of Suspension (Cms) 0.247 mm/N BL Product (BL) 16.32 T-M Diaphragm Mass inc. Airload (Mms) 35.5 grams Efficiency Bandwidth (EBP) Product 77.4 Maximum Linear Excursion (Xmax) 0.79 mm Surface Area of Cone (Sd) 538.9 cm² Maximum Mechanical Limit (Xlim) 8.0 mm MOUNTING Information Recommended Enclosure Volume Sealed 14-51 liters/0.5-1.8 cu.ft. Vented 56.6-116 liters/2-4.1 cu.ft. Overall Diameter 12.03", 305.5 mm Baffle Hole Diameter 10.95", 278.1 mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.25", 6.4 mm Mounting Holes B.C.D. 11.59",