Working. Deep bass. Made in Spain. BEYMA POWER 12N - 12" BASS / MID-BASS SPEAKER NEW IMPROVED BEYMA POWER 12N IS A HIGH POWER 12" SPEAKER THAT HANDLES 500 WATTS AES & 1,000 WATTS PROGRAM FEATURES A RUBBER SURROUND, LARGE 4" VOICE COIL & A HIGH XMAX OF 10.0MM FREQUENCY RANGE FROM 45HZ TO 1.5KHZ DELIVERS A DEEP SMOOTH TIGHT BASS WITH GOOD MID-BASS 42MM PEAK TO PEAK X-DAMAGE WORKS WELL IN 2-WAY CABINETS OR AS A LOW FREQUENCY SPEAKER AVAILABLE IN 4 OHMS ONLY THE BEYMA POWER 12N HAS A 10.0MM XMAX W/ 500 WATTS AES POWER HANDLING! Beyma Power 12N Item Price: $389.95 SEE BOX DESIGNS BELOW WOOFER MODEL POWER 12N Specifications Nominal Basket Diameter 12" / 300mm Impedance 4 ohms AES Power Rating 500 Watts Program Power 1,000 Watts Frequency Response 45Hz - 1.5kHz Sensitivity (1W/1m) 93dB Voice Coil Diameter 4" / 100mm Voice Coil Length 25 mm Air Gap Height 10 mm X Damage (peak to peak) 42 mm BL Factor 20.1 N/A Mounting Information Overall Diameter 12.3" / 312mm Bolt Circle Diameter 11.7" / 298mm Baffle Cutout Diameter- - Front Mount 11" / 280mm No. Of Mounting Holes 8 Overall Depth 5" / 127mm Net Weight 21.4 lb. / 9.7 kg. Shipping Weight 22.9 lb. / 10.4 kg. Materials Basket Die Cast Aluminum Cone Paper Surround Rubber Voice Coil Edgewound Copper Wire Magnet Ferrite Thiele-Small Parameters Resonant Frequency (fs) 48 Hz Impedance (Re) 3.5 ohms Coil Inductance (Le) 1.0 mH Mechanical Q (Qms) 4.6 Electrical Factor (Qes) .37 Total Q (Qts) .34 Comp. Equivelant Vol. (Vas) 1.17 ft3 / 33 Liters Voice Coil Overhang (Xmax) 10.0 mm Moving Mass (Mms) 141 Grams Surface Area of Cone (Sd)m2 0.055 Reference Efficiency 1.0% Displacement Volume (Vd) 550 cm3