At its foundation, the S4700 uses an all-new cast-frame 15-inch woofer (2216Nd) with a powerful dual 3-inch voice coil and neodymium motor structure for outstanding balance with the horn-loaded compression drivers. At its foundation, the S4700 uses an all-new cast-frame 15-inch woofer (2216Nd) with a powerful dual 3-inch voice coil and neodymium motor structure for outstanding balance with the horn-loaded compression drivers. Mid- and high-frequencies are reproduced by a pair of titanium diaphragm compression drivers and a single-piece, SonoGlass® dual horn assembly. The 2-inch Aqua-Plas™-coated titanium diaphragm compression driver (175Nd-3) is mated to a 90° x 60° Bi-Radial® horn and delivers mid- and high-frequencies with lifelike dynamics and startling realism while an ultra-high frequency 0.75-inch titanium diaphragm compression driver (138Nd) with a 60° x 30° Bi-Radial horn recreates critical air and spaciousness. Premium-quality network components and dual binding post inputs ensure audiophile performance in any application. The attractive furniture-grade cherry wood veneer enclosure is internally braced at critical points and is tuned via a rear-firing port. The S4700 is intended for use in high-performance 2-channel audio systems or as an LCR loudspeaker in a JBL Synthesis multi-channel home theater installation. Type: 3-way floorstanding speaker LF: 15" pure pulp + dual 3" voice coils Neodymium motor and cast aluminum frame HF: 2" Aquaplas-coated Titanium diaphragm HF Horn: 90° x 60° Sonoglass Bi-Radial UHF: 0.75" Titanium diaphragm compression UHF Horn: 60° x 30° Sonoglass Bi-Radial Cabinet: Internally-braced Bass-reflex: single rear-firing tuned port Dual binding posts for bi-wire or bi-amp Freq Response: 38Hz – 40kHz (@-6dB) Sensitivity: 94dB (2.83V @1m) Power handling: 300 Watt RMS Crossover Frequencies: 800Hz, 12kHz Nominal Impedance: 6 Ohm Dimensions (HWD): 1068 x 500 x 371mm Weight: 54.5kg (120 lbs)