When you
need high power at very low distortion in a small, compact light weight,
reliable power amplifier then you need the MC 502 McIntosh.
The values
to look for when looking for a power amplifier are:
Quality
construction.
Reliability.
Design
excellence.
Mechanical
strength
Electrical
versatility
Convenience
of operation
Stability
and superipr performance.
The McIntosh
MC 502 power amplifier is probably the most compact source of very low
distortion stereophonic power in existence. It is truly unique. More than any
other amplifier it provides very low distortion stereo power, more
sophisticated yet practical protection, and more bandwidth in a amazingly small
yet eliable package. For example; the MC 502 weighs only 27 pounds yet it can
deliver 75 watts per channel into 2,7 to 4 ohms loudspeakers, sine wave,
continuous average power at less than 0,02% distortion, harmonic or
intermodulation from 20 Hz to 20 kHz.
There are
three protection circuits which contribute to the reliability, long life, and
excellent performance of the MC 502. the first control circuit is the Sentry
Monitor which senses and confines current and voltage conditions to the safe
operating characteristics of the output stage power transistors. Power Guard is
the second control circuit, and eliminates amplifier output clipping.
Amplifiers are capable of delivering large quantities of power when they are
driven to clipping. Clipping is caused when the amplifier is asked to produce
more power output than it can deliver with low distortion. A clipped amplifier
can have more than 40% harmonic distortion. The extra energy content of the
clipped signal will damage most loudspeakers. This new McIntosh advancement
helps protect your speakers from this kind of damage. Power Guard does not
limit the dynamic range or the power output of the power amplifier. The third
control circuit is the speaker protection and turn on delay arrangement.
The Sentry Monitor, Power Guard, and speaker
protector circuits were developed by McIntosh engineers and are each covered by
U.S. patents assigned to McIntosh Laboratory.
The cubical
content of the amplifier chassis is less than 513 cubic inches and yet at full
continuous sine wave output the entire structure is cool, a really effective
example of thermal engineering. It is this kind of thermal transfer designing
that makes possible the fabulous reliability of McIntosh engineering talent and
achievement.
Of all the
good equipment manufactured today, only McIntosh amplifiers offer lowest
distortion, high reserve power, long life, trouble free performance and highest
value. For more than 20 years mcIntosh has been recognized as the leader.
Continuous mahor investment in engineering and development provides you with
conservative use of the newest and best in solid state physic and space age
technology.
Specifications
MC 502
Power Output
(minimum sine wave continuous average power output per channel from 20 to
20,000 Hz, both channels operating)
Stereo: 75 watts into 2,7 to 4 Ω ; 50 watts into 8 Ω
Which is :
14,2
volts RMS across 2,7 Ω
17,3
volts RMS cross 4 Ω
20,0
volts RMS across 8 Ω
Mono
(Bridged): 150 watts into an 8 Ω
Which
is : 34,6 volts RMS across 8 Ω
Output Load
Impedance
Stereo
: 2,7 Ω to 8 Ω
Mono: 8 Ω
9obtained by connecting across the output terminals of both channels)
Total
Harmonic Distortion
Stereo
: 0,02% ( max. at any power level from
250 milliwatts to rated power per channel from 20 - 20,000 Hz, both channel
operating)
Mono : 0,02% (
max. at any power level from 250 milliwatts to rated power per channel
from 20 - 20,000 Hz)
Intermodulation
Distortion
Stereo
: 0,02% (max. at any power level from
250 milliwatts to rated power per channel both channels operating for any
combination of frequencies, 20 - 20,000 Hz)
Mono : 0,02% (max. at any power level from 250
milliwatts to rated power for any combination of frequencies, 20 - 20,000 Hz)
Frequency
Response:
20 Hz -
20,000 Hz +0, -0,25 dB at rated power
10 Hz -
100,000 Hz +0, -3 dB at rated power
Hum and
Noise: 95 dB below rated output
Ratings
Output Voltages: 25 volts for
distribution lines
Damping
Factor: Greater than 50
Input
Impedance: 75,000 Ω
Input
Sensitivity/Impedance
Switchable: 0,75 volt or 2,5 volt/ level control provided
for higher input voltges
Power
Requirement: 120 Volts, 50/60 Hz ; 0,2
to 4 amperas 920 to400 watts)
Dimensions :
Front Panel
(W x H) : 406 x 92 mm (16" x
3-5/8")
Chassis (W x
H x D): 375 x 60 x 368 mm (14-3/4"
x 2-3/8" x 14-1/2")
Finish: Front panel is anodized gold and black with
special gold/teal nomenclature illumination. Chassis is black.
Weight: 12,2 kg (27 pounds) net