Norman Audio

MartinLogan Motion 4

$800.00 $480.00

New Year Promotion, while stock lasts.
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.

Availability: In stock

“If we are going to get more people excited about the world of HiFi, this is definitely what we need a lot more of. I am very happy to award MartinLogan one of our Exceptional Value Awards for 2010…the Motion 4’s are worthy of the MartinLogan name on the box. ” — Jeff Dorgay, Tone Audio

“I was impressed by just how comfortable these speakers were playing at high volumes, and in fact often sounded better at these levels. If you want a home theater and music system to rock on a budget, these are speakers to seriously check out. Their high efficiency and low impedance help them maximize output from receivers, allowing one to have the volume and dynamics found in truly great home theaters and music systems at a budget price.” — Dr. Ken Taraszka, Home Theater Review

“Folks, the Motions are the real deal. It doesn’t take a special speaker to do movies, but it does take a special speaker to belly up to the musical bar and turn a CD into a genuine musical experience.” — Kevin East, SoundStage!

Audiophile performance without an audiophile price
Inspired by the clarity and detail of our ultra-high-end electrostatic loudspeakers, Motion 4 features an exquisite Folded Motion tweeter, powerful bass, and folded reflex port technology in a compact and affordable package. Key to Motion 4’s performance is the lightning fast response of the tweeter’s light-weight diaphragm combined with a large surface area (8-times that of a typical one-inch dome tweeter) which together achieve a smooth, refined sound with stunning dynamic range and jaw-dropping clarity—certain to inspire envy in audiophiles and non-audiophiles alike.


Stereo speaker or home theater front/sur-round ideal for large, medium, and small rooms.
Inspired by MartinLogan’s ultra-high-end electrostatic loudspeakers, the Motion Series was created by our dedicated in-house engineering team to provide stunningly compelling sound for your ultimate-performance audio system.

Key Features:

  • Folded Motion™ tweeter
  • 4-inch woofer. Paper cone doped for stability and damping. Rigid dust cap.
  • Folded bass reflex port
  • Precision Vojtko™ crossover with custom air core coil and low DCR steel laminate inductors, and polyester film and low DF electrolytic capacitors
  • Bookshelf or on-wall installation
  • Convenient push-style binding posts easily adapt to accept banana plugs


Frequency Response

70–25,000 Hz ± 3 dB

Recommended Amplifier Power

20–150 watts

Vertical Dispersion

80° x 80°


90 dB @ 2.83 volts/ meter


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


Folded bass-reflex port


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


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)


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