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Monolith III User's Manual

How is it that music can be recreated by
something that you are able to see
through? Electrostatic energy makes
this possible.

Where the world of traditional loud-
speaker technology deals with cones,
domes, diaphrams, and ribbons that
are moved with magnetism, the world
of electrostatic loudspeakers deals with
charged electrons attracting and

diaphragm is what actually moves to
excite the air and create music. The
stator's job is to remain stationary,
hence the word stator, to provide a
reference point for the moving dia-
phragm. 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 simultane-
ously with and against the diaphragm,
consequently moving it back and forth,
producing music. This technique is
known as push-pull operation and is a

The Electrostatic Concept

repelling each other.

To fully understand the electro-
static concept , some back-
ground information will be
helpful. Remember when you
learned, in a science or physics
class back in high school, that
like charges repel each other
and that opposite charges attract
each other? Well, this principle is
the foundation of the electrostatic
concept.

An electrostatic transducer
consists of three pieces: the
stators, the diaphragm and the
spacers. (See 

Figure 8.) The

Stator

An Electrostatic Transducer

An Electrostatic Transducer

An Electrostatic Transducer

An Electrostatic Transducer

An Electrostatic Transducer

Figure 8

Figure 8

Figure 8

Figure 8

Figure 8. Cut away view of an electrostatic transducer.

Notice the simplicity due to minimal parts usage.

Diaphragm

Spacer

Содержание Monolith III

Страница 1: ...The Monolith III Speaker System User s Manual...

Страница 2: ...stration with your speakers you cannot be assured of having received new units If this is the case please contact Martin Logan We know you are anxious to listen to your new speakers So to speed you al...

Страница 3: ...ults The fruit of this labor has brought us the passive IIIp INTERFACE and the superior electronic IIIx CROSSOVER With either of these two devices the transition from the electro static element to the...

Страница 4: ...l of the speaker and then to the wall outlet Extension cords may be used if necessary since the AC power requirement of the Monolith is extremely small Step 3 Signal Connection Step 3 Signal Connectio...

Страница 5: ...olts meter Weight Weight Weight Weight Weight 120 lbs speaker 54 4 kg speaker Size Size Size Size Size HWD 73 75 x 26 75 x 11 75 187 3cm x 67 9cm x 29 8cm Components Components Components Components C...

Страница 6: ...rrowed the field of contestants down to the cone and the electrostat The outcome would dictate the way that future generations would refer to loudspeakers as being either conven tional or exotic Bell...

Страница 7: ...s performance it presented a difficult load that some amplifiers did not like its dispersion was very directional and its power handling was limited to around 70 watts As a result many people continue...

Страница 8: ...ng and operating the speakers Substantially impaired perform ance or severe damage may occur to a Martin Logan speaker if operation is attempted from an incorrect AC power source If your home is not e...

Страница 9: ...one set of wires to the HI HI HI HI HI and HI HI HI HI HI binding posts of the IIIp INTERFACE Then connect a second set of wires to the LO LO LO LO LO and LO LO LO LO LO binding posts Next connect bot...

Страница 10: ...o amplifiers or two mono amplifiers and one stereo amplifier Get the idea here With either form of passive bi amplification your pre amplifier must have dual outputs If your pre amplifier is not so eq...

Страница 11: ...ropriate left and right inputs of both amplifiers See Figure 3a With vertical bi amping vertical bi amping vertical bi amping vertical bi amping vertical bi amping each of the stereo amplifiers is ded...

Страница 12: ...er because all frequency division of the signal is done at line level at very low power millivolts with active components transistors This configuration has several advan tages With the frequency divi...

Страница 13: ...ter all signal connections have been signal connections have been signal connections have been signal connections have been signal connections have been made and you have verified that made and you ha...

Страница 14: ...is labeled frequency and the right control is labeled boost cut See Figure 6 These are a very accurate and precise pair of controls that allow you to adjust your speakers output in the most problemat...

Страница 15: ...ame frequency as that of the worst offender and adjust the boost cut control to its appropriate position either up to cancel a void or down to cancel a peak you should begin to establish a smooth prog...

Страница 16: ...ave a much higher output impedance In addition many cables can change the preamplifiers output characteristics In order to assure a high level of performance with all types of preamps and cables the M...

Страница 17: ...namic cone drive a high Q driver in a large tuned usually ported box is required The trade off with this approach is poor speed acceleration and damping of the woofer driver The superior performance o...

Страница 18: ...s phenomenon Reflective Surfaces Reflective Surfaces Reflective Surfaces Reflective Surfaces Reflective Surfaces The hard surfaces of your room particularly if close to your speaker system will reflec...

Страница 19: ...in Logan electrostatic loudspeakers are known as bipolar radiators This means that they produce sound from both their fronts and their backs Consequently musical information is reflected by the wall b...

Страница 20: ...g with a wide listeningarea Eventhoughtheysufferfrom venetian blind effect angled multiple panel speakers can deliver good imaging but only to specific spots in the listen ing area Ascanbeseen pointso...

Страница 21: ...y with deeper bass and more spacious highs resulting After a few days of listening you can begin to make refine ments and hear the differences of those refinements The Back Wall The Back Wall The Back...

Страница 22: ...imaging is more open and spacious and the bass response tightened that is a superior position Move the speakers back six inches from the initial set up position Again listen to the imaging and bass r...

Страница 23: ...they sound for years to come Do not spray any cleaning solutions on the electrostatic element as this could impair the speakers performance Dust may be removed with a brush attachment on a vacuum cle...

Страница 24: ...e then applied to the stators The resulting electrostatic field created by the opposing high voltage on the stators works simultane ously with and against the diaphragm consequently moving it back and...

Страница 25: ...d damped and close to massless Unfortunately these condi tions are not available in our world today To make these cones and domes move all electromagnetic drivers must use voice coils wound on formers...

Страница 26: ...in imaging and staging performance due to the minutely accurate phase relationship of the full range panel wave launch Critical Zone Critical Zone Critical Zone Critical Zone Critical Zone 250 20kHz...

Страница 27: ...er with the inherent speed and accuracy of an electrostatic panel Since then refinements in the actual driver assemblies crossover compo nents and materials used in the construction of our hybrid spea...

Страница 28: ...o be any interaction Is there likely to be any interaction Is there likely to be any interaction Is there likely to be any interaction Is there likely to be any interaction between the Monoliths and t...

Страница 29: ...y be vacuumed off with a brush attachment connected to your vacuum cleaner or you may blow them off with compressed air DO NOT SPRAY ANY KIND OF CLEANING AGENT ON OR IN CLOSE PROXIMITY TO THEM No Outp...

Страница 30: ...el A numerical expression of the relative loudness of a sound The difference in decibels between two sounds is ten times the common logarithm of the ratio of their power levels DC DC DC DC DC Abbrevia...

Страница 31: ...by which it opposes the flow of electric current resulting in the generation of heat in the conducting material usually expressed in ohms Resistor Resistor Resistor Resistor Resistor A device used in...

Страница 32: ...3 00 2001 delaware street p o box 741 lawrence kansas 66044 phone 913 749 0133 fax 913 749 5320 1989 Martin Logan Ltd All rights reserved...

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