INCLUDES: 4x 10W650A-4 10" PRO AUDIO WOOFER FEATURES: High fidelity meets high output — PRV Audio ALTO Series Woofers. Audio experts and professional musicians know that tone can make or break a performance, in the studio or on the stage. That’s why PRV Audio’s Alto Series woofers were carefully crafted and voiced to create a natural, smooth sound while remaining dynamic. To get the right sound, a special composite cone is built with non-pressed paper (visible on the backside) for the reduced break-up and smooth sound. A unique, woven-cloth dust cap helps to achieve high sensitivity by reducing moving mass while helping to cool the voice coil. You’ll find that Alto Series woofers work remarkably well vented and sealed cabinets, as woofers in two-way speakers or midrange speakers in three-way systems, and even shine when used as the bass guitar and guitar speakers. Upgrade to the PRV Audio ALTO Series… You’ll thank us later! Highlights Nominal Impedance: 4 Ohms Rated AES Power Handling (RMS): 325 Watts Program Power: 650 Watts Sensitivity (1W/1m): 97 dB Voice Coil Diameter: 2.5″ Technical Details GENERAL SPECIFICATIONS Nominal Diameter 10″ (254 mm) Nominal impedance 4 Ohms Rated AES Power Handling (RMS) 325 Watts Program Power 650 Watts Sensitivity 2.00V at 1m 97 dB Recommended Hi Pass Crossover** **For Full Power Handling 150 Hz** **12db Per Octave Crossover Frequency Response at -10dB 75 – 5,500 Hz Voice Coil Diameter 2.5″ (65.5 mm) Voice Coil Wire CCAW Voice Coil Winding Depth 13.0 mm Former Material Kapton Magnetic Gap Depth 10.00 mm Frame Material Stamped Steel THIELE-SMALL PARAMETERS Equivalent Volume Vas 41.23 l Excursion (mathematical)*** Xmax 4.00 mm Free Air Resonance Fs 66.88 Hz Mechanical Factor Qms 16.07 Electrical Factor Qes 0.40 Total Factor Qts 0.39 Cone Area Sd 415 cm² Mechanical Mass Mms 33.09 g Bl Factor Bl 11.23 Tm Dc Resistance Re 3.7 Ohms Inductance Le 0.57 mH at 1 kHz Mechanical Mass Without Air Mmd 28.30 g Mechanical Compliance Cms 0.171 mm/N EXTRA INFO Overall Diameter 10.10” (257 mm) Front Mount Baffle Cutout 9.25” ( 235 mm) Mounting Depth 4.3” (110 mm) Overall Depth 4.72” (120 mm) Net Weight 10.49 Lbs (4.75 kg) Shipping Weight 12.01 Lbs (5.45 kg) Carton Dimensions W x L x H 12.2” x 12.2” x 7.28” (310 x 310 x 185 mm)