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Page 7
Logos User's Manual
Martin-Logan Exclusives
Vapor Deposited FilmVapor Deposited Film
Vapor Deposited FilmVapor Deposited Film
Vapor Deposited Film
The diaphragm material used in all Martin-Logan
speakers employs an extremely sophisticated vapor
deposited conductive polymer membrane. 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 diaphragm 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 IntegrityTransducer Integrity
Transducer IntegrityTransducer Integrity
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 Logos a wide margin
of safe operation. In addition to the electrical
insulation properties, this coating also provides the
Logos with a durable, attractive finish that dampens
the steel to prevent ringing. The finished metal plates
are curved into a 30 degree arc. Placed between
them is our exclusive vapor deposited diaphragm
and spacers. This assembly is then bonded together
with aerospace adhesives whose strength is so great
that it is commonly used as an alternative to welding.
The result of these advanced technologies is a
transducer that is attractive, durable, highly rigid, well
dampened, and neutral.
Mechanical/AcousticalMechanical/Acoustical
Mechanical/AcousticalMechanical/Acoustical
Mechanical/Acoustical
Tone ShapingTone Shaping
Tone ShapingTone Shaping
Tone Shaping
The clear Lexan
®
panels on the back of the Logos stator
are the key elements of an innovative pressure compen-
sation technology. Martin-Logan is able to tone-shape the
diaphragm + or - 6dB without the use of an insertion loss
crossover. The advantage of this system is a high
efficiency driver with wide bandwidth capabilities of
dimensions which are easily integrated into a domestic
environment.
Curvilinear Line SourceCurvilinear Line Source
Curvilinear Line SourceCurvilinear Line Source
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 electrostatics 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 compro-
mise 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 tech-
nology, 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.
Содержание
- User s manual 1
- Contents 2
- Dispersion characteristics 14 2
- Glossary 18 2
- History 4 2
- Home theatre 15 2
- Important 2
- Important contents 2
- Installation options 8 2
- Introduction 3 2
- Logos bracket assembly setup 10 2
- Logos specifications 20 2
- Martin logan exclusives 7 2
- Operation 9 2
- Questions 16 2
- Room acoustics 12 2
- The electrostatic concept 6 2
- Troubleshooting 17 2
- Introduction 3
- History 4
- An electromagnetic transducer an electromagnetic transducer an electromagnetic transducer an electromagnetic transducer an electromagnetic transducer 6
- An electrostatic transducer an electrostatic transducer an electrostatic transducer an electrostatic transducer an electrostatic transducer 6
- The electrostatic concept 6
- Curvilinear line source 7
- Curvilinear line source curvilinear line source curvilinear line source curvilinear line source curvilinear line source 7
- Martin logan exclusives 7
- Mechanical acoustical mechanical acoustical mechanical acoustical mechanical acoustical mechanical acoustical tone shaping tone shaping tone shaping tone shaping tone shaping 7
- Mechanical acoustical tone shaping 7
- Transducer integrity 7
- Transducer integrity transducer integrity transducer integrity transducer integrity transducer integrity 7
- Vapor deposited film 7
- Vapor deposited film vapor deposited film vapor deposited film vapor deposited film vapor deposited film 7
- Installation options 8
- Ac power connection 9
- Ac power connection ac power connection ac power connection ac power connection ac power connection 9
- Operation 9
- Signal connection 9
- Signal connection signal connection signal connection signal connection signal connection 9
- Logos bracket assembly 10
- Logos bracket assembly setup revised 3 99 10
- Logos user s manual page 10 revised 10
- Mounting the logos on the wall or ceiling 10
- Revised contents of accesory kit 10
- Logos user s manual 11
- Page 11 11
- Room acoustics 12
- Terminology 12
- Terminology terminology terminology terminology terminology 12
- Your room 12
- Your room your room your room your room your room 12
- Rules of thumb 13
- Rules of thumb rules of thumb rules of thumb rules of thumb rules of thumb 13
- As you can see from the illustrations your logos speaker projects a controlled dispersion pattern see figure 2 this vertical dispersion profile minimizes interactions with the floor and the ceiling 14
- Controlled horizontal dispersion 14
- Controlled horizontal dispersion controlled horizontal dispersion controlled horizontal dispersion controlled horizontal dispersion controlled horizontal dispersion 14
- Controlled vertical dispersion 14
- Controlled vertical dispersion controlled vertical dispersion controlled vertical dispersion controlled vertical dispersion controlled vertical dispersion 14
- Dispersion characteristics 14
- Your logos launches a 30 degree dispersion pattern when viewed from above this horizontal dispersion field gives you a choice of good seats for the performance while minimizing interaction with side walls see figure 1 14
- Home theatre 15
- Questions 16
- Lack of bass lack of bass lack of bass lack of bass lack of bass 17
- Low frequency 60hz hum low frequency 60hz hum low frequency 60hz hum low frequency 60hz hum low frequency 60hz hum 17
- No output no output no output no output no output 17
- Popping and ticking sounds funny noises popping and ticking sounds funny noises popping and ticking sounds funny noises popping and ticking sounds funny noises popping and ticking sounds funny noises 17
- Troubleshooting 17
- Weak output loss of highs weak output loss of highs weak output loss of highs weak output loss of highs weak output loss of highs 17
- Glossary 18
- Specifications 20
- 5 0 5 0 5 0 5 0 5 0 22
- Back cover 22
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