Martin Logan Motion 4i - Bookshelf Speaker - Pair

The Motion 4i is a compact bookshelf speaker featuring a Folded Motion tweeter, a 4in paper cone woofer, and a proprietary Vojtko crossover network in an affordable gloss black package. A rear-firing Cascading Bass Reflex Port delivers surprisingly big bass from a remarkably compact enclosure, with flexible tabletop, on-wall, or upside-down high-wall mounting.

• Folded Motion tweeter with low-mass diaphragm for vanishingly low distortion and fast response
• Rear-firing Cascading Bass Reflex Port for enhanced low-frequency output
• Proprietary Vojtko crossover network using custom air core coil inductors, low DCR steel laminate inductors, and polyester film/low-DF electrolytic capacitors
• Versatile placement: on speaker stands, shelf, or wall-mounted at two angles
• Can mount upside down for high wall placement
• Recessed push-style binding posts, accommodating banana jacks
• Gloss black finish with MartinLogan's signature perforated grille

• Frequency response: 70–23,000Hz ±3dB
• Recommended amplifier power: 20–150 watts per channel
• Horizontal dispersion: 80°
• Vertical dispersion: 80°
• Sensitivity: 90dB/2.83V/meter
• Impedance: 4Ω, compatible with 4, 6, or 8Ω rated amplifiers
• Crossover frequency: 2,900Hz
• High frequency transducer: 1in x 1.4in (2.6cm x 3.6cm) Folded Motion transducer with 5.25in x 1.75in (13.3cm x 4.4cm) diaphragm
• Low frequency transducer: 4in (10.2cm) paper cone with stamped steel basket, non-resonant asymmetrical chamber, rigid structured dust cap, folded bass reflex port
• Components: custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, low DF electrolytic capacitors in parallel, system thermal/current protection
• Inputs: push style with banana jacks
• Weight: 6lb (2.72kg)
• Dimensions: 12.6in x 5.6in x 5.7in (32cm x 14.3cm x 14.5cm)