Black 5.5″ Passive Center Speaker (EA)

Details from MartinLogan

Cinematic sound from a compact center

MartinLogan’s Motion 30i center channel delivers clear, accurate movie dialogue and robust sound effects for a more enjoyable home theater experience. This speaker improves upon the performance of the popular Motion 30 center channel, adding drive-stabilizing dust caps and stiffened motor suspension on its woofers.

A solid mid- and low-frequency foundation

MartinLogan uses aluminum cones for their unique blend of lightness and rigidity. Two 5-1/2″ woofers — spaced for optimum output distribution — blend clear and neutral midrange frequencies with solid, satisfying low end. The rear-firing bass port helps efficiently enhance bass response without adding distortion to this speaker’s clean performance.

Detail and precision from the Folded Motion® tweeter

Between the Motion 30i’s woofers is the source of this speaker’s impressive high-frequency performance — MartinLogan’s acclaimed Folded Motion tweeter. Its pleated diaphragm works similarly to an accordion by “squeezing” air to create sound. Because it requires almost 90% less excursion than the typical 1″ dome tweeter, response time and distortion are drastically reduced. The diaphragm’s increased surface area also provides wide, yet controlled sound dispersion to create a realistic and highly accurate soundstage.

Unique crossover network

Motion Series speakers feature proprietary Vojtko™ crossovers, named after MartinLogan’s chief audio technologist, Joe Vojtko. “A Vojtko crossover isn’t so much a set of design requirements as it is a philosophy,” the company explains. Each speaker’s drivers are carefully selected or designed to operate within an intentional frequency range and specific performance parameters. That allows the crossover networks — built from high-quality capacitors and resistors — to be clean and uncomplicated.

Versatile cabinet design

This center channel speaker is sized to fit inside most standard audio/video cabinets. The speaker’s angled enclosure is a nice touch for versatility. No matter where you place it, you can direct the sound toward your ears. Place it beneath your TV firing up toward your listening position, or mount it high and flip the cabinet upside down to aim sound down into the room.