Motion SLM X3 vs Paradigm Millenia LP Trio
The Millenia LP Trio's sensitivity is 92 dB against the Motion SLM X3's 93 dB, its impedance 8Ω against 4Ω, its low-frequency extension 125 Hz against 120 Hz, and its woofer 4.5" against 4".
AI-generated product photo — not official manufacturer imagery.
LoudspeakersSoundbars
Estimated price (community-sourced)
$1,300
Around — community and catalog average, updates slowly
About the Motion SLM X3
The MartinLogan Motion SLM X3 is a passive, ultra-slim 3-channel on-wall loudspeaker/soundbar intended to deliver left, center, and right channels from one enclosure, particularly beneath or above thin flat-panel televisions. It requires three channels of external amplification; it has no built-in amplifier, HDMI/optical/analog source inputs, wireless capability, streaming, or DSP decoding. Its driver complement comprises three Folded Motion high-frequency transducers and six 4-inch paper/fiber-cone woofers. The sealed, wall-mount-oriented design is only 2 inches (5.1 cm) deep and uses low-profile push-style speaker terminals. Manufacturer literature specifies a 4-ohm nominal load, 93 dB sensitivity, 20–140 W-per-channel recommended amplification, 3 kHz crossover, and 80° horizontal/vertical dispersion. A subwoofer is advisable for deep bass, as rated response begins at 120 Hz. Note: MartinLogan sources differ on upper frequency-response notation: the current product page lists 120–25,000 Hz (±3 dB), while the product manual and historical reviews list 120–23,000 Hz (±3 dB).
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 93 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 120 Hz - 25 kHz
- Power Handling
- 140W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 140W
Power Specifications
Amplification power output and characteristics
- Power @ 4Ω
- 140W @ 4Ω
- Minimum Impedance
- 4Ω
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Type
- Folded Motion
- Driver Size
- 4"
- Driver Count
- 6
- Enclosure Type
- sealed
- Crossover Frequency
- 3.0 kHz
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 122 × 16.2 × 5.1 mm (W × H × D)
- Weight
- 5.9 kg (13 lbs)
- Available Colors
- glossy black
Never published
- Digital Audio — the maker never published this. Checked 15 sources on 8 Sept 2026
Key Specifications
Sensitivity: 93 dB
Impedance: 4Ω
Frequency: 120-25000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions