Passive Monitor

SE MF-4S

Floorstanding Passive Monitoring System | 

The SE MF-4S adapts the SE MF-4 into a floorstanding format for home, hi-fi, and dedicated listening spaces. It uses the same 12-inch LIT woofer as the SE MF-4 — derived from the SE MF-2.1’s 15-inch LIT technology — optimized here for shorter listening distances and residential listening geometry. Paired with a precisely time-aligned 1-inch compression driver, the SE MF-4S delivers studio-grade coherence, resolution, and dynamic control in a form suited to living rooms and dedicated listening environments. Extending to 28 Hz (-6 dB), it is designed for high-end listening and critical monitoring at 1.5–2.5 meter listening distances.

Key Features

  • Passive analog floorstanding mastering studio monitor
  • Floorstanding format optimized for residential and hi-fi listening spaces
  • Large-format performance at listening distances of 1.5–2.5 meters
  • Extended low-frequency response to 28 Hz (–6 dB)
  • 12-inch LIT woofer derived from the SE MF-2.1
  • Low-loss motor design for precise low-frequency control
  • 1-inch compression driver with constant directivity horn
  • Physical time alignment for coherent source behavior
  • Controlled 80° × 60° dispersion for stable room interaction
  • Low-distortion reproduction with high sensitivity and natural dynamics

Price per pair

$39,995.00
USD Pricing applicable to the U.S. market.
Shipping and taxes calculated at checkout.
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Technical Specifications

Drivers 1” compression driver, metal alloy diaphragm, neodymium magnet circuit, constant directivity horn; 12” LIT woofer, coated paper cone, neodymium magnet circuit
Sensitivity 91 dB / 1 W / 1m
Impedance 8 Ω nominal, 4 Ω minimal
Power 100 W RMS
Frequency range 28 Hz – 22 kHz (-6 dB)
Crossover frequency 1200 Hz
Distortion THD < 0.5 % (91 dB / 1m / 100 Hz – 22 kHz)
Dispersion 80° horizontal, 60° vertical
Weight 50 kg / 110 lbs
Dimensions H 1150 mm × W 380 mm × D 560 mm
Finish Nextel anthracite standard, different colors on demand
In the SE MF-4S, the floorstanding architecture is used to place the acoustic center and radiation geometry in a relationship better suited to seated listening in residential spaces. The custom Strauss-developed 12-inch LIT woofer operates with low mechanical loss, while the compression driver and horn system are integrated to maintain stable vertical focus, controlled room interaction, and continuous tonal balance through the listening position. This allows the MF-4S to preserve transient fidelity, spatial stability, and midrange coherence in real living environments.
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