Specifications

FREQUENCY RESPONSE
+ 0, -0.25dB from 20Hz to 20kHz
+ 0. -3.0dB from 10Hz to 100kHz
INPUT SENSITIVITY
2.5 volts
A-WEIGHTED SIGNAL TO NOISE RATIO
Balanced, 90dB (120dB below rated output)
Unbalanced, 85dB (115dB below rated output)
INTERMODULATION DISTORTION, SMPTE
0.005% maximum if instantaneous peak power
output does not exceed twice the output power rating.
Ratings
WIDE BAND DAMPING FACTOR, 8 ohm output
200
INPUT IMPEDANCE
10,000 ohms
POWER GUARD
Clipping is prevented and THD does not exceed 2%
with up to 14dB overdrive at 1 kHz.
POWER REQUIREMENTS
120 volts, 50/60Hz, 12 amps UL/CSA.
How to Connect Amplifier
INPUT
Use a shielded cable to connect the signal from the
preamplifier or signal source to the power amplifier
input. Locate the cable away from speaker leads and
AC power cords. All connections are made on the back
of the MC1000.
OUTPUT
Selection of the proper gauge wire to connect the
loudspeaker preserves the quality of sound reproduction
for which the loudspeaker has been designed. If under-
size wire is used, resistance is added to the amplifi-
er/loudspeaker combination which adversely affects the
performance. Added resistance causes reduction of
damping characteristics, modification of frequency
response and reduction in power output. The output
terminals will accomodate wire gauges 16 through 4.
Use lamp cord or wire with similar type of
insulation to connect the speaker to the amplifier. In
all cases, the leads to and from the speaker should be
twin conductor or twisted together. Select the correct
size wire for the wire length from the chart. It is recom-
mended that the DC resistance of the speaker leads be
less than 2.5% of the speaker impedance. Resistance
of the leads should be computed for the length of wire
both to and from the speaker.
MAXIMUM WIRE LENGTH
- For 2 ohm Load -
Wire
Gauge
12
10
8
6
4
Feet
15
25
40
60
100
Meters
4.6
7.6
12.2
18.3
30.5
- For 4 ohm Load -
Wire
Gauge
14
12
10
8
6
Feet
20
30
50
80
120
Meters
6.1
9.1
15.2
24.4
36.6
- For 8 ohm Load -
Wire
Gauge
16
14
12
10
8
Feet
25
40
60
100
150
Meters
7.6
12.2
36.6
30.5
45.7
Wire lengths above represent the wire resistance
equal to 2.5% of the speaker impedance.
For multiple speaker operations, run separate
leads from the amplifier to the speakers.
CONNECTING A LOUDSPEAKER
Use the terminals that match the rated impedance
of your speaker 2, 4 or 8 ohms.
AC POWER
The amplifier AC power cord is plugged into a
MClNTOSH LABORATORY INC., 2 CHAMBERS STREET, BlNGHAMTON, NEW YORK 13903
MC1000 Product Preview/Page 3