MartinLogan Monolith III, User Manual

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Page5 Monolith III User's Manual
Monolith III Specifications
The
MONOLITH III
hybrid speaker
system consists of a broad-range
single element electrostatic transducer
integrated with a quick-response
woofer. This approach takes maximum
advantage of the positive aspects that
both technologies have to offer.
Dispersion is a controlled 30 degrees.
This was achieved by curving the
electrostatic transducer element itself,
an elegantly simple solution.
Impedance Impedance Impedance Impedance Impedance
High-pass: High-pass: High-pass: High-pass: High-pass:
Nominal: 4 ohms, below 10kHz
Minimum: 1 ohm @ 20kHz
Low-pass: Low-pass:
Low-pass: Low-pass:
Low-pass:
Nominal: 4 ohms
Minimum: 4 ohms
Power Handling Power Handling
Power Handling Power Handling Power Handling
250 watts per channel
Recommended Amplifier Power Recommended Amplifier Power Recommended Amplifier Power Recommended Amplifier Power Recommended Amplifier Power
80 - 250 watts per channel
MONOLITH III SPEAKER
System Frequency Response System Frequency Response System Frequency Response System Frequency Response System Frequency Response
28-24,000 Hz +/-2dB
Electrostatic Frequency Response Electrostatic Frequency Response Electrostatic Frequency Response Electrostatic Frequency Response Electrostatic Frequency Response
95-24,000 Hz +/- 2dB
Woofer Frequency Response Woofer Frequency Response
Woofer Frequency Response Woofer Frequency Response Woofer Frequency Response
28-2,000 Hz +/- 2dB
Dispersion Dispersion Dispersion Dispersion Dispersion
Horizontal: 30 Degrees
Vertical: 4' Line Source
Sensitivity Sensitivity Sensitivity Sensitivity Sensitivity
89dB/2.83 Volts/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 Components
Glass-epoxy boards,
custom-wound audio transformers,
30-amp gold plated binding posts,
regulated HV power supply
IIIx CROSSOVER
Crossover Frequency Crossover Frequency
Crossover Frequency Crossover Frequency
Crossover Frequency
125 Hz: @12dB/octave low-pass
@18dB/octave high-pass
Input Impedance Input Impedance
Input Impedance Input Impedance Input Impedance
47,000 ohms
Output Impedance Output Impedance Output Impedance Output Impedance Output Impedance
100 ohms
Distortion Distortion
Distortion Distortion
Distortion
0.003% THD @ 1kHz @ 1Vrms
Signal to Noise Signal to Noise Signal to Noise Signal to Noise Signal to Noise
Greater than -95dB
IIIp INTERFACE
Crossover Frequency Crossover Frequency
Crossover Frequency Crossover Frequency
Crossover Frequency
125 Hz @ 12dB/octave
Impedance Impedance Impedance Impedance Impedance
Nominal: 4 ohms, below 10kHz
Minimum: 1 ohms @ 20kHz
Components Components Components Components Components
Glass-epoxy boards,
polypropylene capacitors,
100% OFC coils,
wirewound resistors,
30-amp gold plated binding posts,
non-ferrous enclosure
Circuit Topology Circuit Topology Circuit Topology Circuit Topology Circuit Topology
Audio circuits are fully complimen-
tary, class-A current-biased J-FET
buffers that isolate passive filter
networks.
Power supply employs a toroidal
transformer , discrete voltage and
self-tracking current regulation.
40-volt peak to peak swing allows
for 30dB of dynamic headroom.
Components Components
Components Components
Components
Glass-epoxy boards, metal film
resistors, polypropylene capacitors,
hand picked J-FETs,
TIFFANY
input/output connectors