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The Martin Logan Sequel mkII is a high-performance two-way floor-standing loudspeaker that combines a 48" by 10" curvilinear electrostatic panel for midrange and treble frequencies with a 10" high-excursion, high-rigidity cone woofer housed in a sealed cabinet for bass. It features a crossover frequency at 250 Hz with second-order 12 dB/octave slopes, delivering a frequency response from 28 Hz to 24 kHz ±2 dB. The speaker has a horizontal dispersion of 30° and a vertical dispersion of 48" line source, providing precise imaging and soundstage. Sensitivity is rated at 89 dB/2.83 V/m with a nominal impedance of 6 ohms (minimum 2 ohms), suitable for amplifiers rated between 20 and 400 watts per channel. The Sequel mkII includes a bass control switch that can boost bass by +2 dB from 40 to 160 Hz. The cabinet is constructed from high-density hardwood powderboard with a suede paint finish, and trim pieces are hand-finished hardwoods available in rosewood, gloss black, walnut, light and dark oak. Weighing 110 lbs each and measuring 72" H × 14" W × 13" D, these speakers were They are known for their pure, natural sound and durability, with custom-wound audio transformers, polypropylene bypass capacitors, and 100% oxygen-free copper coils in the crossover network. The speakers require external amplification and have no built-in amplifier. They are bi-wire capable with 5-way binding posts for input connections. The Sequel mkII is no longer in production but remains respected for its sound quality and design.
Driver and acoustic performance characteristics
Driver configuration and enclosure design
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Components that show up alongside the Sequel mkII in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The ElectroMotion ESL's sensitivity is 91 dB against the Sequel mkII's 89 dB and its high-frequency extension 22 kHz against 24 kHz. Both share impedance (6Ω) and ways (2).
The Script's sensitivity is 88 dB against the Sequel mkII's 89 dB and its high-frequency extension 20 kHz against 24 kHz. Both share impedance (6Ω) and ways (2).
The HPS-938W's sensitivity is 90 dB against the Sequel mkII's 89 dB, its low-frequency extension 30 Hz against 28 Hz, and its high-frequency extension 22 kHz against 24 kHz. Both share impedance (6Ω).
The twenty.24's sensitivity is 90 dB against the Sequel mkII's 89 dB and its impedance 8Ω against 6Ω. Both share low-frequency extension (28 Hz) and ways (2).
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