S150T vs MartinLogan Motion FX
The Motion FX's sensitivity is 91 dB against the S150T's 86 dB and its low-frequency extension 70 Hz against 80 Hz. Both share impedance (4Ω) and woofer (5.25").
AI-generated product photo — not official manufacturer imagery.
LoudspeakersCenter Channel SpeakersDiscontinued
Estimated price (community-sourced)
$180
Around — community and catalog average, updates slowly
About the S150T
The M&K Sound S150T Tripole is a surround speaker designed for multi-channel systems, using M&K’s Tripole configuration to blend direct and indirect sound for a more enveloping surround field. It combines a front-firing 5.25-inch fiberglass bass/midrange driver and 1.1-inch soft fabric dome tweeter with two side-firing 3.5-inch paper pulp drivers, making it suitable for accurate, high-output surround reproduction in home theater and professional monitoring setups. The current official product page lists it as part of the 150 Series and describes it as a THX Tripole surround speaker.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 86 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 80 Hz - 20 kHz
- Power Handling
- 200W
- Min. Amplifier Power
- 5W
- Max. Amplifier Power
- 200W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Type
- fiberglass bass/midrange and soft fabric dome tweeter
- Driver Size
- 5.25"
- Driver Count
- 4
- Enclosure Type
- dipole
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 165 × 270 × 150 mm (W × H × D)
- Weight
- 4.8 kg (11 lbs)
- Available Colors
- Black Satin, White Satin
Key Specifications
Sensitivity: 86 dB
Impedance: 4Ω
Frequency: 80-20000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions