Can a high-end company make a great $499 speaker?
The MartinLogan Motion 4 answers the question, can a speaker be considered a high-end design if it retails for $499 a pair? Jeff Dorgay at Tone Audio magazine thinks it can!
MartinLogan made a splash with audiophiles in the early 1980s with its electrostatic panel speakers. The clear, 5-foot-tall panels were remarkable for their "see-through" transparency of sound. The company still makes big-panel speakers but has branched out into home theater, and now with the Motion 4, it's making overachieving small speakers.
The Motion 4's tweeter is pretty special; its Folded Motion transducer works by moving air, similar to the way an accordion works. Its low-mass diaphragm "squeezes" air and produces almost 90 percent less back and forth movement than a dome tweeter. The Folded Motion tweeter also has a large surface area; eight times that of a 1-inch dome tweeter. The Folded Motion technology is said to minimize distortion.
The Motion 4 is a small bookshelf design, 5 by 5 inches and just over a foot tall; it has a 4-inch woofer.
Dorgay listened to the Motion 4s with a few different amplifiers: a Naim Uniti receiver, Prima Luna Prologue 1 vacuum-tube integrated amp, and a Denon AVR 3910 receiver. In a small room placed near a corner, the Motion 4s had a surprising amount of bass. MartinLogan concentrated on making a great speaker that only goes down to 75 Hz cleanly, instead of a mediocre speaker that goes down to 50 Hz. Need more low-end oomph? Add a subwoofer to provide deep bass. … Read more