Vapor Deposited Film
The diaphragm material used in all Martin-Logan speakers employs an extremely sophisticated vapor deposited conduc- tive polymer surface. A proprietary conductive compound is vaporized then electrostatically driven into the surface of the polymer film in a vacuum chamber. This process allows an optically transparent membrane, adds no mass to the dia- phragm and is extremely uniform in its surface resistivity characteristics. 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.
Transducer Integrity
All Martin-Logan transducers begin with two pieces of high grade, cold rolled steel. These steel pieces are then custom perforated and insulated with an exotic composite coating.
This proprietary coating insulates the stator to 3 times its actual needed working voltage and gives the Quest a wide margin of safe operation. In addition to the electrical insulation properties, this coating also provides the Quest with a durable, attractive finish that dampens the steel to prevent ringing. The finished metal plates are then sandwiched with our exclusive vapor deposited diaphragm and spacers into a curved geometry and bonded together with aerospace adhesives whose strength exceeds that of welding.
The result of these advanced technologies is a transducer that is attractive, durable, highly rigid, well dampened, and neutral.
Curvilinear Line Source
Since the beginning of Audio, achieving smooth full range dispersion has long been a problem for all loudspeaker designers. Large panel transducers present even more of a challenge because the larger the panel, the more directional the dispersion pattern becomes.
Full range electrostats have always been one of the most complex 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, Martin-Logan 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, we developed the production capability to bring this technology out of the laboratory and into the market place.
You will find this proprietary Martin-Logan technology used in all of our products. It is one of the many reasons behind our reputation for high quality sound with practical usability. This is also why you see the unique "see through" cylindrical shape of all Martin-Logan products.
