The MartinLogan Motion 8i is a compact, high-performance speaker designed to deliver exceptional clarity and versatility in both stereo and home theater systems. Inspired by MartinLogan's legendary electrostatic loudspeakers, it features the company's signature Folded Motion® Tweeter paired with dual 4-inch woofers to produce detailed highs, articulate vocals, and impressive dynamics from an ultra-compact enclosure. Its sealed cabinet design ensures tight, controlled bass and flexible placement options, making it ideal for bookshelves, media consoles, or wall-mounted installations.
The Folded Motion® Tweeter uses an ultra-light folded diaphragm that moves air more efficiently than a conventional dome tweeter, resulting in faster transient response, lower distortion, and greater detail. Combined with MartinLogan's proprietary Vojtko™ crossover network, the Motion 8i delivers a seamless transition between drivers, creating a balanced soundstage with excellent imaging and natural tonal accuracy across a wide listening area.
Its slim profile allows the Motion 8i to be mounted horizontally as a center channel or vertically as a left or right speaker, making it one of the most versatile models in the Motion Series. Recessed binding posts, on-wall mounting capability, and compact dimensions allow it to integrate easily into virtually any entertainment space without compromising performance.
Whether used as a dedicated center speaker, a compact stereo pair, or as part of a complete surround sound system, the Motion 8i delivers the speed, precision, and musicality that define MartinLogan's Motion Series. Its combination of elegant design, flexible installation, and audiophile-grade performance makes it an excellent choice for listeners seeking premium sound in a space-saving form factor.
- Component type: Compact on-wall / bookshelf speaker
- Configuration: 2.5-way sealed speaker
- High-frequency driver: 1 × 1" × 1.4" Folded Motion® Tweeter with 5.25" × 1.75" diaphragm
- Low-frequency drivers: Dual 4-inch paper cone woofers with stamped steel baskets
- Frequency response: 70 Hz – 23 kHz (±3 dB)
- Sensitivity: 89 dB (2.83V/1m)
- Impedance: 4 ohms (compatible with 4, 6, or 8-ohm amplifiers)
- Recommended amplifier power: 20–180 W per channel
- Crossover frequency: 3,000 Hz
- Horizontal dispersion: 80°
- Vertical dispersion: 80°
- Inputs: Recessed push-style binding posts with banana plug compatibility
- Enclosure: Sealed cabinet
- Dimensions (H × W × D): 5.6 × 22.25 × 5.2 in (14.2 × 56 × 13.2 cm)
- Weight: 8.5 lb (3.85 kg)
- Design features: Folded Motion® Tweeter, proprietary Vojtko™ crossover network, horizontal or vertical placement, tabletop or on-wall installation, gloss black finish
