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5-in LF cone; 0.5-in HF dome tweeter, horn-loaded.

SMS4 Two-Way Surface-Mounted Loudspeaker

PRODUCT INFORMATION

Careful acoustic design and the use of advanced materials contribute to the exceptional music fidelity and speech intelligibility exhibited by the EAW Commercial SMS4 (black) and SMS4W (white) two-way speaker systems.

The low-frequency driver’s carbon fiber diaphragm remains extremely rigid at high power levels, producing a more linear response and lower distortion. The cone is fitted with a durable foam surround and treated to resist moisture. The high-frequency section features a constant directivity horn with a built-in mechanical phase equalizer. The horn is driven by a Ferrofluid® cooled, 0.5″ mylar dome tweeter.

The system is nominally crossed over at 4 kHz by a 12 dB/octave network, which uses markedly lower (than conventional) inductance values in series with the woofer. This design reduces sound delays associated with high inductance values and provides excellent low frequency transient response. The high-pass section is corrected for optimum performance of the CD horn and is protected with a circuit based on a low-value/low-mass filament resistor that smoothly limits the power sent to the tweeter driver.

All components are housed in a vented enclosure formed from semi-expanded polystyrene foam that is extremely strong, lightweight and weather resistant. Threaded metal sockets are molded into the cabinet to facilitate quick, safe deployment of the SMS4, as a single unit or in arrays, using specially designed accessory mounting hardware.

The SMS4 is a part of EAW Commercial’s SMS Series Surface Mount Speakers, which includes two-way constant directivity, compact speakers in easily installed enclosures.

Six year warranty.

  •  5 inch high-efficiency carbon fiber woofer
  • 0.5 inch mylar dome tweeter loaded by a 110º x 100º constant directivity horn
  • Built-in multi-tap constant voltage transformer for 25V, 50V, 70V, and 100V distributed systems
  • Bypass mode for low-impedance operation into 4 ohms
  • Built-in low-inductance passive crossover
  • Lightweight, UV/weather resistant, high density polystyrene, trapezoidal shaped enclosure for multiple applications and minimum visual intrusion
  • Integrated mounting points for use with optional mounting hardware
  • Articulated wall-mount support bracket included

CONFIGURATION

Subsystem:

Transducer:  LF 1x 5-in cone; HF 1x .5-in. dome

Loading:  HF: Horn Loaded

Amplifier Channels: Single-amp LF/HF

External Signal Processing: High Pass Filter

PERFORMANCE

Operating Range (-10 dB, Hz)

Full Range: 60 – 23k

Axial Sensitivity (1W @ 1m, dB SPL)

Full Range: 87

Power Handling/Impedance (Watts @ Ohms)

Full Range: 60 @ 4

Calculated Maximum Output Peak (dB SPL)

Full Range: 114

Calculated Maximum Output Long Term (dB SPL)

Full Range: 108

Transformer Taps (Watts)

1, 5, 10, 20, 30

Nominal Coverage (degrees)

Horizontal: 100

Vertical: 110

ORDERING DATA

Versions

SMS4 Black 0010005

SMS4 White 0010006

Dimensions (inches/millimeters)

Height: 10.62/270

Width: 7.36/187

Depth: 6.77/172

Weights (pounds/kilograms)

Net: 8.0/3.6