Crown mt-600 Manual Suplementario
Micro-Tech 600 Amplifier Service Manual
6
Specifications
Unless noted otherwise, all specifications are based
on driving an 8 ohm load per channel, both channels
driven, the sensitivity switch in the 26dB position, the
AC supply is 120VAC at 60Hz. Crown specifications
are guaranteed through the warranty period (normally
3 years). Because our testing methods are more strin-
gent than our published specifications, every Crown
amplifier will exceed its published specifications.
on driving an 8 ohm load per channel, both channels
driven, the sensitivity switch in the 26dB position, the
AC supply is 120VAC at 60Hz. Crown specifications
are guaranteed through the warranty period (normally
3 years). Because our testing methods are more strin-
gent than our published specifications, every Crown
amplifier will exceed its published specifications.
POWER
Power
8 Ohm Stereo—235W/Ch
4 Ohm Stereo—325W/Ch
2 Ohm Stereo—400W/Ch
8 Ohm Bridge Mono—655W
4 Ohm Bridge Mono—750W
2 Ohm Parallel Mono—665W
1 Ohm Parallel Mono—700W
4 Ohm Stereo—325W/Ch
2 Ohm Stereo—400W/Ch
8 Ohm Bridge Mono—655W
4 Ohm Bridge Mono—750W
2 Ohm Parallel Mono—665W
1 Ohm Parallel Mono—700W
Load Impedances: Rated for 16, 8, 4, 2, and 1 (parallel
mono only) Ohm operation; safe with all types of loads,
even totally reactive loads.
even totally reactive loads.
AC Mains: 120VAC at 60 Hz with standard three-wire
grounded connector for North American units; 100VAC,
120VAC, 220VAC, and 240VAC at 50 or 60 Hz when
equipped with universal transformers, applicable fan
assembly, and other applicable hardware with coun-
try specific power cord.
120VAC, 220VAC, and 240VAC at 50 or 60 Hz when
equipped with universal transformers, applicable fan
assembly, and other applicable hardware with coun-
try specific power cord.
PERFORMANCE
Frequency Response: ±0.1dB from 20 Hz to 20 kHz at 1
Watt.
Phase Response: ±10° from 10 Hz to 20 kHz at 1 Watt.
Signal to Noise Ratio: A-weighted, better than 105 dB
below full rated output. Better than 100 dB below full
rated output from 20 Hz to 20 kHz.
rated output from 20 Hz to 20 kHz.
Total Harmonic Distortion (THD): <0.05% from 20 Hz to
1 kHz, increasing linearly to 0.1% at 20 kHz at 500W.
I.M. Distortion: <0.05% from less than 164 milliwatts to
520 W at 26 dB gain.
Slew Rate: >13V per microsecond. (Slew rates are
limited to useful levels for ultrasonic/RF protection.)
Damping Factor: >1000 from 10 Hz to 400 Hz.
DC Offset: <10 millivolts.
Input Impedance: Nominally 20K ohms balanced; 10K
ohms unbalanced.
Output Impedance: <10 milliohms in series with <2
microhenries.
Protection Systems: Output Device Emulation Protec-
tion (ODEP) limits drive in the event of dangerous
dynamic thermal conditions without interrupting power.
Current limiting for shorted load protection. DC/LF and
common mode output current Fault circuitry to mute
audio. Delay of 4 seconds from turn on mutes amplifier
to prevent dangerous turn-on transients. A high volt-
age circuit breaker in each main transformer primary
and a low voltage power supply fuse in fan primary.
Slew rate limiting to prevent RF burn out.
dynamic thermal conditions without interrupting power.
Current limiting for shorted load protection. DC/LF and
common mode output current Fault circuitry to mute
audio. Delay of 4 seconds from turn on mutes amplifier
to prevent dangerous turn-on transients. A high volt-
age circuit breaker in each main transformer primary
and a low voltage power supply fuse in fan primary.
Slew rate limiting to prevent RF burn out.
MECHANICAL
Input Connectors: Balanced 1/4 inch phone jacks. Op-
tional XLR inputs with MT-XLR accessory.
Output Connectors: Color-coded 5-way binding posts
on 3/4 inch centers; spaced 3/4 inch apart.
Front Panel Controls: A front panel rocker switch used
to power the amplifier on and off.
Back Panel Controls: A three-position switch which
selects Stereo, Bridge-Mono, or Parallel-Mono mode.
A rotary potentiometer for each channel used to
control output level. A ground lift switch used to isolate
the phone jack input grounds from the chassis (AC)
ground. And a push button circuit breaker for each
channel used to protect the power supplies.
A rotary potentiometer for each channel used to
control output level. A ground lift switch used to isolate
the phone jack input grounds from the chassis (AC)
ground. And a push button circuit breaker for each
channel used to protect the power supplies.
Internal Controls: A three-position switch selects 0.775V,
1.4V, or 26 dB voltage gain input sensitivity.
Indicators: Amber Enable indicator shows on/off status
of low-voltage power supply. An Amber ODEP indica-
tor for each channel shows the reserve energy status.
If no reserve energy is available the indicator will dim
in proportion to ODEP limiting.
tor for each channel shows the reserve energy status.
If no reserve energy is available the indicator will dim
in proportion to ODEP limiting.
Construction: Black splatter-coat steel chassis with
specially designed flow-through ventilation system.
Mounting: Standard EIA 310 front-panel rack mount
with supports for supplemental rear corner mounting.
Dimensions: 19 inches wide, 3.5 inches high, 16 inches
deep behind front mounting surface.
Weight: 36 lbs, 4 oz. Shipping; 41 lbs, 2 oz.