• JBL-Synthesis–S4700-pair
  • JBL-Synthesis–S4700-hero
  • JBL-Synthesis–S4700-detail
  • JBL-Synthesis–S4700-pair
  • JBL-Synthesis–S4700-hero
  • JBL-Synthesis–S4700-detail

JBL Synthesis S4700 Floorstanding Loudspeaker

Raising the Standard for Ultrahigh-end Luxury Audio

The JBL Synthesis S4700 is a floorstanding 3-way high-performance loudspeaker built upon the same professional-grade technology used in the acclaimed Project K2
S9900, one of the most advanced and sophisticated loudspeakers in the world today.

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 AquaPlas™-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.

Features and Benefits


3-way, Floorstanding Loudspeaker


15-inch pure pulp woofer with dual 3-inch voice coils; Neodymium motor structure and cast aluminium frame.


2-inch Aqua-Plas-coated Titanium diaphragm high-frequency compression driver mated to a 90° x 60° Sonoglass Bi-Radial horn


0.75-inch Titanium diaphragm ultra-high-frequency compression driver mated to a 60° x 30° Sonoglass Bi-Radial horn


Internally-braced, bass-reflex enclosure with a single rear-firing tuned port


Dual binding post inputs for bi-wire or bi-amplified connections


Furniture-grade cherry wood veneer finish


Detailed Specifications:


Description: 3-Way 15″ Floorstanding Loudspeaker


Frequency Response: 38Hz – 40kHz (-6dB)


Recommended Amplifier Power: 300 Watts


Sensitivity: (2.83V @ 1m) 94dB


Nominal Impedance: 6 ohms


Crossover Frequencies: 800Hz, 12kHz


Size:  Height 42.1” x Width 19.7” x Depth 14.6” (106.8cm x 50.0cm x 37.1cm)


Weight: 120 lb (54.5kg)


 Review

Documentation to be added soon . . .