U1-PX vs MartinLogan CLX 25th Anniversary
The CLX 25th Anniversary's impedance is 6Ω against the U1-PX's 8Ω, its high-frequency extension 23 kHz against 20 kHz, and its low-frequency extension 56 Hz against 26 Hz. Both share sensitivity (90 dB).
AI-generated product photo — not official manufacturer imagery.
U1-PX
Sound LabLoudspeakersFloorstanding Speakers
Estimated price (community-sourced)
$32,700
Around — community and catalog average, updates slowly
About the U1-PX
The Sound Lab U1-PX (also written U-1PX) is a very large full-range electrostatic loudspeaker from Sound Lab’s Ultimate series. It uses Sound Lab’s PX (Professional Extension) stator technology, intended to improve panel rigidity, performance, and reliability. The speaker is a seven-foot-class, dipole planar design with a 45-degree full-spectrum horizontal dispersion pattern, adjustable high-frequency, mid-frequency, bass-level, and DC-bias controls, and a nominal 8-ohm impedance. Available documentation identifies it as an established Sound Lab model; current Sound Lab materials list related and newer Ultimate products, but do not clearly identify the U1-PX as a current standard-production model.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 90 dB SPL @ 1W/1m
- Impedance
- 8Ω
- Frequency Response
- 26 Hz - 20 kHz
- Power Handling
- 600W
- Min. Amplifier Power
- 50W
- Max. Amplifier Power
- 600W
Speaker Design
Driver configuration and enclosure design
- Driver Type
- electrostatic
Key Specifications
Sensitivity: 90 dB
Impedance: 8Ω
Frequency: 26-20000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions