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11
Quantity Part Number Description
1 033838 Shipping carton only
2 033837 End cap
1 033836 Inside carton only
1 033725 Top pad
1 034576 Bottom pad
1 034592 Filler pad
2 034446 Foam plug
4 017937 Plastic foot
4 400159 #10-32 x 3/4” screw
4 404080 #10 Flat washer
FOAM PLUG
IMPORTANT
See Note
under Packing Instruc�ons
Packing Instructions
In the event it is necessary to repack the equipment for
shipment, the equipment must be packed exactly as
shown below.
Note: It is very important that the four plastic feet are
attached to the bottom of the equipment. This will
ensure the proper equipment location on the bottom
pad. Failure to do this will result in shipping damage.
Use the original shipping carton and interior parts
only if they are all in good serviceable condition.
If a shipping carton or any of the interior part(s) are
needed, please call or write Customer Service Depart-
ment of McIntosh Laboratory.
Specications
Power Output
Minimum sine wave continuous average power output
per channel, all channels operating is:
50 watts into a 8 ohm load
90 watts into a 4 ohm ohm load
Output Load Impedance 8 and 4 ohms
Rated Power Band 20Hz to 20,000Hz
Total Harmonic Distortion
0.05% maximum harmonic distortion at any power
level from 250 milliwatts to rated power, 20Hz to
20,000Hz
Dynamic Headroom
2.1dB, 8 ohm load
3.3dB, 4 ohm load
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
Input Sensitivity (for rated output)
1.6 Volt Unbalanced (8 ohm Loudspeaker)
1.3 Volt Unbalanced (4 ohm Loudspeaker)
Signal To Noise Ratio (A-Weighted)
85dB (95dB below rated output)
Intermodulation Distortion
0.2% maximum, if the instantaneous peak power output
does not exceed twice the rated power output or less per
channel with all channels operating for any combina-
tion of frequencies from 20Hz to 20,000Hz
Wide Band Damping Factor
Greater than 65, at 8 ohms
Greater than 32, at 4 ohms
Input Impedance 26,000 ohms Unbalanced
Voltage Gain 29dB
Power Control Input 5-15VDC, less than 1mA
Power Control Output
12VDC, 50mA maximum total
Power Requirements
100 - 240Volts, 50/60Hz at 10 Amps
Standby: less than 0.5 watt
Overall Dimensions
Width is 17-1/2 inches (44.5cm)
Width with Side Mount Brackets attached is 19 inches
(48.3cm)
Height is 4-5/16 inches (11.0cm) including feet
Depth is 21 inches (53.3cm) including the Front Panel
and Cables
Weight
22 pounds (10 kg) net, 38.4 pounds,
(17.4 kg) in shipping carton
Shipping Carton Dimensions
Width is 26-1/2 inches (67.3cm)
Height is 11-3/4 inches (29.9cm)
Depth is 24-1/4 inches (61.6cm)
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