Crown Micro-Tech MT-1200 - User Manual

MICRO-TECH SERIES
T
he Crown
®
Micro-Tech
®
600, 1200 and
2400 are the original industry standards
for touring amplifi ers. Micro-Tech am-
plifi ers are known around the world as the
benchmark for high-density, ultra-pure power
in a compact package. In addition, each model
gives you Crown’s legendary ODEP
®
protection
to keep the show going long after other ampli-
fi ers would fail.
Micro-Tech amplifi ers use proven technol-
ogy and a miniaturized design to deliver
terrifi c value for their size, weight and price.
Crown’s patented ODEP protection circuitry
and Grounded Bridge
™
output stages combine
to provide performance and reliability that
surpass traditional designs. Micro-Tech ampli-
fi ers also have an independent high-voltage
power supply for each channel. This approach
results in extremely low crosstalk and makes
it possible to use each channel as a separate
amplifi er.
Plus, your investment in a Micro-Tech ampli-
fi er is backed by Crown’s unequaled Three-
Year, No-Fault, Fully Transferable Warranty that
covers everything.
For more details about the Crown Micro-Tech
Series, contact the Crown Technical Support
Group at 800-342-6939 or 574-294-8200.
Also, visit the Crown Audio website at www.
crownaudio.com.
Specifi cations
The following applies to 120 VAC, 60 Hz units in Stereo mode
with both channels driven into 8 ohm loads and an input
sensitivity of 26 dB unless otherwise specifi ed. Specifi cations
for units supplied outside the USA may vary slightly at differ-
ent AC voltages and frequencies.
Power
Output Power: See power charts below.
Load Impedance: Safe with all types of loads.
Rated for 2 to 16 ohms in Stereo mode, 4 to
16 ohms in Bridge-Mono mode, and 1 to 4
ohms in Parallel-Mono mode.
Voltage Gain (at maximum level setting):
MT-600: 20:1 ±6% or 26 dB ±0.5 dB at 26
dB gain setting. 55:1 ±6% or 35 dB ±0.5 dB
at 0.775 volt sensitivity; 31:1 ±6% or 30 dB
±0.5 dB at 1.4 volt sensitivity.
MT-1200: 20:1 ±6% or 26 dB ±0.5 dB at 26
dB gain setting. 64:1 ±6% or 36 dB ±0.5 dB
at 0.775 volt sensitivity; 34:1 ±6% or 31 dB
±0.5 dB at 1.4 volt sensitivity.
MT-2400: 20:1 ±6% or 26 dB ±0.5 dB at 26
dB gain setting. 83:1 ±6% or 38 dB ±0.5 dB
at 0.775 volt sensitivity; 46:1 ±6% or 33 dB
±0.5 dB at 1.4 volt sensitivity.
Required AC Mains: 100, 120, 220 and
240VAC (±10%), 50 and 60 Hz units are avail-
able.
AC Line Current:
AC mains current, frequency and voltage
requirements are provided on the unit’s back
panel.
At Idle: All amps draw no more than
90 watts.
AC Line Connector: All units are shipped with
an appropriate plug and cord for the required
AC voltage.
Performance
Frequency Response: ±0.1 dB from 20 Hz to
20 kHz at 1 watt.
Phase Response: ±10 degrees from 20 Hz to
20 kHz at 1 watt.
Signal to Noise Ratio:
A-Weighted:
Better than 105 dB below full bandwidth
power.
20 Hz to 20 kHz:
Better than 100 dB below full bandwidth
power.
Total Harmonic Distortion (THD): Less than
0.5% at full bandwidth power from 20 Hz to 1
kHz increasing linearly to 0.1% at 20 kHz.
Intermodulation Distortion (IMD): (60 Hz and
7 kHz at 4:1) Less than 0.05% from 163 mil-
liwatts to full bandwidth power.
Damping Factor: Better than 1,000 from 10 Hz
to 400 Hz.
Common Mode Rejection (CMR): At rated full
bandwidth power, better than 70 dB from 20
Hz to 1 kHz falling linearly to better than 50 dB
at 20 kHz.
DC Output Offset (shorted input): < ±10 mV.
Features
• Crown’s Grounded Bridge™ design delivers
large voltage swings without using easily
stressed output-transistor confi gurations
like conventional amplifi ers; the results are
lower distortion and superior reliability
• Patented ODEP
®
(Output Device Emulation
Protection) circuitry compensates for over-
heating and overload to keep the amplifi er
working when others would fail
• High damping factor provides superior
motion control over low-frequency drivers
for clean, accurate low end
• Full protection against shorted outputs,
open circuits, DC, mismatched loads, gen-
eral overheating, high-frequency overloads
and internal faults
• 1/4-inch and balanced XLR input connec-
tors
• Ground lift switch to isolate chassis and
phone jack audio grounds
• Internal three-position input sensitivity
switch provides settings of 0.775 and 1.4
volts for standard 1 kHz power, and 26 dB
voltage gain
• Three-Year, No-Fault, Fully Transferable
Warranty completely protects your invest-
ment and guarantees its specifi cations
MT-600
MT-1200
MT-2400
8 ohm Stereo (per channel)
1 kHz
Power
225W
325W
400W
655W
750W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
MT 600
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
*
8 ohm Stereo (per channel)
1 kHz
Power
520W
800W
1,050W
1,585W
2,070W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
MT 2400
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
*
8-ohm Stereo (per channel)
1 kHz
Power
310W
480W
675W
970W
1,300W
4-ohm Bridge-Mono
8-ohm Bridge-Mono
2-ohm Stereo (per channel)
4-ohm Stereo (per channel)
MT 1200
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
*

Summary

Features

Specifications

Power

Details output power ratings for different load impedances and modes.

Load Impedance

Specifies safe load types and impedance ranges for Stereo, Bridge-Mono, and Parallel-Mono modes.

Voltage Gain

Defines voltage gain settings for different sensitivity levels and modes.

Required AC Mains

Lists available AC voltage and frequency requirements for units.

AC Line Current

Information regarding AC mains current, frequency, and voltage requirements.

AC Line Connector

Details on the AC plug and cord provided with the units.

Performance

Covers key performance indicators like frequency response and distortion.

Signal to Noise Ratio

Specifies signal-to-noise ratios for A-Weighted and full bandwidth.

Total Harmonic Distortion

Details total harmonic distortion across frequency ranges.

Intermodulation Distortion

Provides intermodulation distortion figures for 60 Hz and 7 kHz at 4:1.

Damping Factor

Specifies the damping factor for low-frequency control.

Common Mode Rejection

Details common mode rejection performance across frequencies.

DC Output Offset

States the DC output offset for shorted inputs.

Controls and Connectors

Level Control

Back panel rotary potentiometer to adjust output level for each channel.

Power Switch

Front panel rocker switch for turning the amplifier on and off.

Stereo;Mono Mode Switch

Back panel switch for selecting Stereo, Bridge-Mono, or Parallel-Mono modes.

Input Sensitivity Switch

Internal switch for selecting 0.775V, 1.4V, or 26 dB input sensitivity.

Ground Lift Switch

Back panel switch to isolate phone jack grounds from AC ground.

Reset Button

Back panel pushbutton to reset the circuit breaker for each channel.

Indicators

Front panel indicators for Enable status and ODEP thermal-dynamic reserve.

Input;Output Connectors

Balanced 1/4-inch and XLR inputs; color-coded binding post outputs.

Protection and Construction

Protection Features

Covers protection against load issues, overheating, and transients.

Turn-On Delay

Four-second turn-on delay prevents transients; occurs at AC waveform zero crossing.

Construction Details

Describes steel chassis, Lexan overlay, and flow-through ventilation.

Cooling System

Internal heat sinks with forced-air cooling for efficient heat dissipation.

Dimensions and Weight

Provides EIA rack mount dimensions and net/shipping weights.

Warranty Information

Three-Year, No-Fault Warranty

Covers repairs/replacement for original specs for three years, transferable.

Contact Information

Provides contact details for warranty inquiries and support.

Crown Micro-Tech MT-1200 Specifications

General

Brand	Crown
Model	Micro-Tech MT-1200
Category	Amplifier
Language	English