XStat™ Transducer
XStat™ transducers incorporate a myriad of technology and
design innovations including CLS™, MicroPerf, Generation
2 Diaphragms, ClearSpars™, and Vacuum Bonding.
CLS™ (Curvilinear Line Source)
Since the beginning of audio, achieving smooth dispersion
has been a problem for all designers. Large panel transduc-
ers present unique challenge because the larger the panel,
the more directional the dispersion pattern becomes.
Wide range electrostats have long been one of the most
problematic transducers because they attain their full
range capabilities via a large surface area. It looked as if
they were in direct conflict to smooth dispersion and
almost every attempt to correct this resulted in either poor
dispersion or a serious compromise in sound quality.
After extensive research, MartinLogan engineers discovered
an elegantly simple solution to achieve a smooth pattern of
dispersion without degrading sound quality. By curving the
horizontal plane of the electrostatic transducer, a controlled
horizontal dispersion pattern could be achieved, yet the
purity of the almost massless electrostatic diaphragm
remained uncompromised. After creating this technology,
MartinLogan developed the production capability to bring
it out of the laboratory and into the market place. You will
find this proprietary MartinLogan technology used in all
of our electrostatic products. It is one of the many reasons
behind our reputation for high quality sound with prac-
tical usability. This is also why you see the unique “see
through” cylindrical shape of MartinLogan products.
Generation 2 Diaphragm
Spire’s diaphragm employs an extremely sophisticated
conductive coating applied to the polymer surface at an
atomic level using a plasma bonding process. A proprietary
compound is driven into the surface of the polymer film
in an oxygen free argon chamber. This process allows
extremely uniform surface resistivity characteristics, an
optically transparent surface, and a nearly massless dia-
phragm. This uniform surface resistivity controls the
electrostatic charge on the diaphragm surface and regulates
its migration. As a result, no discharging or “arcing” can occur.
Sleek. Compact. MicroPerf stator technology, featured in
all XStat™ transducers, reveals more open playable area
in each panel, offering increased performance from even
more compact stat panels. It is significant to note that the
XStat™ transducer in the radical new Spire loudspeaker
supports the bandwidth and dynamics associated with
traditional electrostatic panels nearly twice its size.
Vacuum Bonding
To achieve the power, precision, and strength of the
XStat™ transducer, two insulated high-purity carbon steel
stators along with a proprietary plasma bonded diaphragm
and ClearSpar™ spacers are fused into a curved geometry
with an aerospace adhesive whose strength exceeds that
of welding. Our proprietary Vacuum Bonding process
guarantees uniform diaphragm tensioning and extremely
precise construction tolerances, resulting in unequivocal
precision, linearity and efficiency.
AirFrame™ Technology
Ultra-rigid extruded aerospace grade aluminum alloy
AirFrame™ technology rigidifies and secures the XStat™ elec-
trostatic panel to the woofer cabinet while at the same time
providing sonic and electrical isolation. Advanced AirFrame™
technology maximizes the electrostatic panels playable sur-
face area and dipole dispersion pattern while minimizing
potentially acoustically destructive intermodulated distortion
caused by spurious vibrations and resonance. The result?
Ultimate imaging capability, low-level detail resolution,
improved efficiency and overall accuracy.
PoweredForce™ Bass Technology
Through integrated engineering of advanced amplification
and transducer designs, PoweredForce™ bass tech-
nology results in usable bass extension down to 29Hz,
immense bass dynamics and precision beyond the reach
of traditional massive box systems—all from an enclo-
sure not much larger than a case of wine! Additionally,
low-frequency equalization capabilities, integrated into
PoweredForce™ technology, allow precision calibration
for optimal room integration.
MartinLogan Exclusives 19
martInlogan exClusIves
MicroPerf Stator
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