McIntosh MC1.2KW Service Manual

PERFORMANCE SPECIFICATIONS
2
1. The heavy lines 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 rated voltage marked on rear panel.
b. All voltages are +/-10% with respect to ground. A
high impedance (10 megaohm) voltmeter must be used.
3. Unlessotherwisespecied:
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.
NOTES
Power Output
Minimum sine wave continuous average power output
is:
1,200 watts into 2 ohm load
1,200 watts into 4 ohm load
1,200 watts into 8 ohm load
Output Load Impedance
2, 4 or 8 ohms
Rated Power Band
20Hz to 20,000Hz
Total Harmonic Distortion
0.005% maximum harmonic distortion at any power level
from 250 milliwatts to rated power, 20Hz to 20,000Hz
Dynamic Headroom
2dB
Frequency Response
+0, -0.25dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
Input Sensitivity (for rated output)
2.5 Volt Unbalanced
5 Volt Balanced
Signal To Noise Ratio (A-Weighted)
120dB below rated output, Unbalanced
124dB below rated output, Balanced
Intermodulation Distortion
0.005% maximum, if the instantaneous peak power output
does not exceed twice the rated power output for any combi-
nation of frequencies from 20Hz to 20,000Hz.
Wide Band Damping Factor
Greater than 40
Input Impedance
10,000 ohms
Power Guard
Less than 2% THD with up to 14dB overdrive at 1,000Hz
Power Requirements
100 Volts, 50/60Hz at 15 Amps
110 Volts, 50/60Hz at 12.5 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
Standby: 0.5 watts
Note: Refer to the rear panel of the MC1.2KW for the
correct voltage.
Overall Dimensions
Width is 17-3/4 inches (45.09cm)
Height is 12-5/16 inches (31.27cm) including feet
Depth is 22 inches (55.88cm) including the Front Panel
and Cables
Weight
147 pounds (66.7 kg) net, 172 pounds (78.0 kg) in ship-
ping carton
Shipping Carton Dimensions
Width is 31 inches (78.74cm)
Depth is 28 inches (71.12cm)
Height is 17-1/4 inches (43.82cm)

McIntosh MC1.2KW Specifications

General

Damping factor	100
Amplifier class	-
Frequency range	10 - 100000 Hz
Output impedance	8 Ω
Audio output channels	1.0 channels
Peak power per channel	1200 W
Signal-to-Noise Ratio (SNR)	124 dB
Total Harmonic Distortion (THD)	0.005 %
Speakers connectivity type	Binding post
Purpose	Performance/stage
Product color	Black, Silver
Connectivity technology	Wired
LED indicators	Yes

Weight and Dimensions

Depth	558.8 mm
Width	450.9 mm
Height	312.7 mm
Weight	66700 g