Electrostatic Center-Channel Loudspeaker: The MarintLogan EM-ESL C is
a high-performance electrostatic center-channel loudspeaker delivers a
full-range performance, by combining an electrostatic panel with a Folded Motion
Tweeter, bolstered by a CenterForce bass system. With the exceptional mid-range
dynamics of an electrostatic panel, the remarkable details delivered by a Folded
Motion Tweeter, and the addition of a newly-designed CenterForce dual woofer
system, you can match the acoustic signature of MartinLogan's ElectroMotion
Series of speakers to build a truly astounding home theater system.
Electrostaic Midrange Panel: By adding a compact electrostatic panel
to a center channel speaker, MartinLogan engineers have succeeded in expanding
the performance dynamics of the most important speaker in your home theater
system. Your center channel speaker needs to be able to reproduce the finest
high frequency details with an expansive midrange to reproduce every whisper of
dialog. The EM-ESL C has a shallow height CLS (Curvilinear Line Source) XStat
electrostatic panel wrapped around the front of the speaker enclosure. The
gentle horizontal curve of the panel enhances the output of its deceptively
compact 114-square-inch radiating area, extending mid-range dispersion patterns
and blending the performance seamlessly with your front-stage ElectroMotion
Folded Motion Tweeter: Just behind the electrostatic panel, in a
specially designed housing, sits MartinLogan's exclusive Folded Motion Tweeter.
The low-mass diaphragm of the Folded Motion Tweeter minimizes distortion, and
its short excursion length reinforces its lightning fast high frequency
response. The 1 x 1.4-inch Folded Motion Tweeter in the EM-ESL C has a total
diaphragm area of 9.2-inches, with the ability to reproduce precise details; one
of the most important jobs of a center channel speaker.
CenterForce Duall Woofer System: Instead of taking up space by
positioning the woofers on each side of the electrostatic panel, MartinLogan
designed a central slot inside the cabinet for the woofers. So, the dual woofers
reside in a well-braced enclosure located behind the tweeter and electrostatic
panel.This new CenterForce design allows the speaker to be more compact, and
encourages the woofers to produce a generous amount of well-blended deep bass.
The CenterForce system in the EM-ESL C features two custom-designed 5.25-inch
aluminum cone woofers. Rigid and yet lightweight, this material reduces flexure
while minimizing response time. Their efficient construction optimizes
suspension and magnetic flux field, further reducing potential sources of
distortion. The result is accurate, musical bass
Binding Post Speaker Terminals: The MarintLogan EM-ESL C features
binding posts that will accept bare wire (16- to 8-gauge), pin-connectors,
spade-connectors, and banana plugs (single only).
Low-Voltage DC Power Supply: The ElectroMotion ESL C speaker
uses an external low-voltage power supply to energize its electrostatic panel.
The included power supply firmly inserts into the "DC Power In" receptacle on
the rear-panel of the speaker and then to an AC wall outlet. The ElectroMotion
ESL C speaker features a signal sensing circuit which will switch the
ElectroMotion ESL C off after a few minutes of no music signal, and requires
less than two seconds to recharge the panels when a music signal is present.
- Input: AC 100-240V~50/60Hz,
- Output: DC 15V, 0.4A
Electrostatic Technology (How it Works): Where traditional
loudspeaker technology incorporate cones, domes, diaphragms, and ribbons that
are moved with magnetism, electrostatic loudspeakers employ charged electrons
attracting and repelling each other. An electrostatic transducer consists of
three pieces; stators, the diaphragm, and spacers. The diaphragm is what
actually moves to excite the air and create music. The stator's job is to remain
stationary and to provide a reference point for the moving diaphragm. The
spacers provide the diaphragm with a fixed distance in which to move between the
stators. As your amplifier sends music signals to an electrostatic speaker,
these signals are changed into two high-voltage signals that are equal in
strength but opposite in polarity. These high voltage signals are then applied
to the stators. The resulting electrostatic field, created by the opposing high
voltage on the stators, works simultaneously with and against the diaphragm,
consequently moving it back and forth, producing music. This technique is known
as push-pull operation and is a major contributor to the sonic purity of the
electrostatic concept due to its exceptional linearity and low distortion.
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