Summit X vs PMC IB2i
The IB2i's sensitivity is 89 dB against the Summit X's 91 dB and its low-frequency extension 25 Hz against 24 Hz. Both share impedance (4Ω) and woofer (10").
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersPowered LoudspeakersDiscontinued
Estimated price (community-sourced)
$6,999
Around — community and catalog average, updates slowly
About the Summit X
The MartinLogan Summit X is a high-end hybrid electrostatic speaker inspired by the CLX model, combining a high-resolution XStat CLS electrostatic transducer for mids and highs with dual 10-inch Controlled Dispersion PoweredForce aluminum cone woofers for deep, smooth bass. It uses a precision Vojtko Voiced crossover at 270Hz with variable phasing for seamless blending. Features include adjustable vertical dispersion via modular feet (12-degree range), 25Hz and 50Hz level controls (±10dB), illuminated controls and ground effects lighting. Ideal for large and medium rooms as stereo or home theater fronts. Discontinued model with state-of-the-art transparency, midrange clarity, and powerful bass.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 91 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 24 Hz - 23 kHz
- Power Handling
- 600W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 600W
Power Specifications
Amplification power output and characteristics
- Power @ 4Ω
- 600W @ 4Ω
- Minimum Impedance
- 4Ω
Speaker Design
Driver configuration and enclosure design
- Driver Type
- XStat CLS electrostatic and aluminum cone woofers
- Driver Size
- 10"
- Driver Count
- 2
- Crossover Frequency
- 270 Hz
Connectivity
Input and output connections
- Analog Outputs
- Custom 5-way binding posts (single wiring)
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 127 × 1549 × 543 mm (W × H × D)
- Weight
- 34 kg (75 lbs)
Key Specifications
Sensitivity: 91 dB
Impedance: 4Ω
Frequency: 24-23000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions