McIntosh MC2KW, Руководство по обслуживанию

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PERFORMANCE SPECIFICATIONS
Power Output
2000 watts into an 8, 4 or 2 ohm load is the minimum sine
wave continuous average power output. The output RMS
voltage is:
126.5V across 8 ohms
89.5V across 4 ohms
62.2V across 2 ohms
Output Load Impedance
8, 4 and 2 ohms (with three paors of terminals each for
impedance)
Rated Power Band
20Hz to 20,000Hz
Total Harmonic Distortion
0.005% maximum harmonic distortion at any power level from
250 milliwatts to 2000 watts, 20Hz to 20,000Hz
Dynamic Headroom
2dB
Frequency Response
+0, -0.25dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
Sensitivity
5.0 Volts Balanced Input
2.5 Volts Unbalanced Input
A-Weighted Signal To Noise Ratio
90dB Unbalanced (123dB below rated output)
94dB Balanced (127dB below rated output)
Intermodulation Distortion
0.005% maximum, if instantaneous peak power output does
not exceed 4000 watts, for any combination of frequencies
from 20Hz to 20kHz.
Wide Band Damping Factor
Greater than 40
Input Impedance
10,000 ohms
Power Guard
Less than 2% THD with up to 14dB overdrive
General Specifications
MC2KW Output Module Power Requirements
100 Volts, 50/60Hz at 35 watts
110 Volts, 50/60Hz at 35 watts
120 Volts, 50/60Hz at 35 watts
220 Volts, 50/60Hz at 35 watts
230 Volts, 50/60Hz at 35 watts
240 Volts, 50/60Hz at 35 watts
MC2KW Power Module Power Requirements
1
100 Volts, 50/60Hz at 1440 watts
110 Volts, 50/60Hz at 13.0 amps
120 Volts, 50/60Hz at 12 amps
220 Volts, 50/60Hz at 7.5 amps
230 Volts, 50/60Hz at 6.5 amps
240 Volts, 50/60Hz at 6.5 amps
Note: Refer to the rear panels of the MC2KW Output Module and
MC2KW Power Modules for the correct voltage.
Overall Dimensions
MC2KW Output Module: Width is 17-3/4 inches (45.09cm),
Height us 12-5/16 inches (31.27cm) including feet, Depth is 26-5/
8 inches (62.54cm) including the front panel, handles, knobs and
interconnect cables
2
MC2KW Power Module: Width is 17-3/4 inches (45.09cm),
Height us 12-5/16 inches (31.27cm) including feet, Depth is 26-5/
8 inches (62.54cm) including the front panel, handles and
interconnect cables
2
Weight
MC2KW Output Module is 121 poulds (54.9kg) net, 146 pounds
(66.2kg) in shipping carton
MC2KW Power Module is 158 poulds (71.7kg) net, 183 pounds
(83.0kg) in shipping carton
1
The power requirements listed are for each MC2KW Power
Module, two are required for each MC2KW Power Amplifier
2
Interconnect cables are supplied with the MC2KW Output
Module and both MC2KW Power Modules connect to the
MC2KW Output Module.
2
1
. The heavy notes on the schematic denote the primary
signal path.
2. Unless otherwise noted, all voltages indicated on the
schematics are measured under the following conditions:
a. AC input at 120 volts, 50/60Hz.
b. All voltages are +/-10% with respect to ground. A
high impedance (10 megaohm) voltmeter must be used.
3. Unless otherwise specified:
a. Resistor values are in ohms.
b. Capacitor values are microfarads (uF).
c. Inductor values are in microhenries (uH).
4. On PC board drawings, Square pad indicates:
a. Polarized Capacitors - Positive
b. Diodes - Cathode
c. Others - Pin 1
5. WARNING
Parts marked with the symbol have critical
characteristics. Use only replacement parts recom-
mended by the manufacturer.
6. Soft startup procedure for servicing:
1. Interconnect output module and power modules
2. Connect Output Module to 120VAC
3. Connect Power Modules to variac and set the
output to zero.
4. Turn Output Module power switch to on. (This will
energize the power relays in the Power Modules.)
5. Gradually advance the variac to 120VAC while
monitoring the AC current.
NOTES