Powerful compact bookshelf speaker with a Folded Motion™ tweeter and Folded Motion Cascading Bass-Reflex Port for deeper bass response. Voice-matched with MartinLogan ESL speakers.

Looking for excellent sound without taking up much shelf or floor space? The MartinLogan Motion® 4i offers a powerful combo of musical performance and compact design. Use a pair as part of a stereo music system, or grab as many as you need for a MartinLogan surround sound system.

One of the reasons the Motion 4i sounds so good is its Folded Motion™ tweeter. This unique, accordion-style design is quick, accurate, and very smooth. You'll enjoy clear, natural sound throughout its frequency range. 

Since this speaker is relatively small, you may want to pair it with a powered subwoofer for deeper bass — especially for home theater applications.

MartinLogan recommends mounting the Motion 4i "right side up" at ear level, but upside down if it's above ear level. This lets it disperse sound down towards you for optimal sonic performance. It even includes the wall-mount bracket, so you can attach it to your wall for awesome sound that's out of the way.

Frequency Response

70–25,000 Hz ± 3 dB

Recommended Amplifier Power

20–150 watts

Vertical Dispersion

80° x 80°

Sensitivity

90 dB @ 2.83 volts/ meter

Impedance

4 Ohms. Compatible with 4, 6,
or 8 Ohm rated amplifiers.

Crossover Frequency

2,900 Hz

High Frequency Driver

1” x 1.4” (2.6cm x 3.6cm)
Folded Motion Transducer with
5.25” x 1.75” (13.3cm x
4.4cm) diaphragm.

Low Frequency Driver

4” (10.2cm) paper cone with
stamped steel basket. Nonresonant
asymmetrical chamber
format. Rigid structured dust cap
to reduce cone break-up modes

Cabinet

Folded bass-reflex port

Components

Custom air core coil and low
DCR steel laminate inductors.
Polyester film capacitors in series
and low DF electrolytic capacitors
in parallel. Overall system
thermal/current protection.

Binding Post Inputs

Push style with banana jacks

Weight

6 lbs. (2.72 kg

Dimensions (H x W x D)

12.6” x 5.6” x 5.25”
(32cm x 14.2cm x 13.3cm)

 

This product can be professionally installed, in our service area, at a rate of $125 per hour. Call for an appointment.

Martin Logan Motion4 (Set of 2)

SKU: 839MO4IB
$299.00Price
Color: Black
  • For more information on this product, please visit the manufacturer website below.

    martinlogan.com

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