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McintoshEngineering skillhasdeveloped
more power, moreperformance, morereliability
with lessheat inthe new Mcintosh MC-240
The MC-240 canbeused asastereo amplifier with40watts ofpower oneach chan-
nel, amonophonic 80watt amplifier, orasabi-amplifier foruse with electronic cross-
over networks. Inputandoutput facilities havebeen provided tomake interconnec-
tions extremely simple.Ineach application theexcellent reservecapacity ofthe MC-
240 produces outstanding realisminmusic-clear lucidhighs-full roundbasswith-
out boom, andclean distinctive middletonesthataredistortion free.Youcanhear
the difference inaMcIntosh. Investment inMcIntosh compliments yourgood judge-
ment. Yourinvestment isprotected bythe McIntosh reputation forRELIABILITY
- PERFORMANCE -QUALITY.
SPECIFICA TIONS
Power Supply:
105-130 volts50/60 cps.Power transformer
is tapped at117 and 125volts.
Power Requirement:
145 watts atno signal output.
270 watts atfull power output.
Power Output:
Stereo ortwin amplifier -40watts output
each channel.
Single channel (mono)-80watts output.
Frequency Range:
-+-
0.1 db20cps to20 KC atfull power
output.
-+-
1.0 db15cps to60 KC atfull power
output.
±
1.5 db10cps to100 KCathalf power
output.
Harmonic Distortion:
less than 0.5
%
atfull rated power output at
any frequency from20cps to20 KC.
Intermodulation Distortion:
less than 0.5
%
atpeak power output of
twice thefull rated power output.
Phase Shift:
less than
-+-
6° from 20cps to20 KC.
Noise andHum Level:
Better than90dbbelow ratedoutput.
Output LoadImp'edances:
Stereo ortwin amplifier-4, 8,16 (25 volts),
125 (70.7 volts), and600ohms.
Single channel {Monol-2, 4,8(25 volts),
16, 32, 62(70.7 voltsl
I
and 300ohms. Damping
Factor:
About 10to1.
Input Level:
Single channel andtwin amplifier-OA volts
for full power output.
Stereo amplifier-2.0 voltsforfull power out-
put.
Input Impedance:
250,000 ohms.
Input Controls:
Gain controls provided forsingle MONO or
TWIN AMPLIFIER inputs.
Balance controlprovided forSTEREO chan-
nels.
Tube Complement:
3 ea. 12AX7
2 ea. 12AU7 2
ea. 12BH7
4 ea. 6l6GC or7027A
Fuse: 3.2ASio-blo
Preamplifier PowerProvisions:
A power receptical isprovided tosupply
25.2 volts CTat1.2 Aand 375Vat 15 MA.
Finish: Chromium andblack.
Size:
16
Va"
x
10 V2"
x
7%".
Weight: 56pounds net.
YOUR FRANCHISED MciNTOSHDEALERPROUDLY RECOMMENDS ANDDISPLAYS
MciNTOSH EQUIPMENT
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