McIntosh MC 22O5, Service Information

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M C 2 2 0 5
P E R F O R M A N C E L I M I T S & R A T I N G S
PERFORMANCE
Mc Intosh audio power rat i ngs are in ac-
cordance w i t h the Federal Trade Commis-
sion R e g u l a t i o n of November 4, 1974 con-
cerning power output c l a i m s for a m p l i -
f i e r s used in home entertainment pro-
ducts.
POWER OUTPUT
STEREO: 200 watts m i n i m u m
s i n e wave continuous aver-
age power output, per chan-
n e l , both channel's o p e r a t i n g
into 1 ohm, 2 ohms, 4 ohms,
or 8 ohms load impedance,
w h i c h i s:
14.1 v o l t s RMS across 1 ohm
20.0 v o l t s RMS across 2 ohms
28.3 v o l t s RMS across 4 ohms
40.0 v o l t s RMS across 8 ohms
MONO: 400 watts m i n i m u m s i n e
wave continuous average power
output into 0.5 ohm, 1 ohm,
2 ohms, or 4 ohms load imped-
ance, w h i c h i s :
14.1 v o l t s RMS across 0.5 ohm
20.0 v o l t s RMS across 1 ohm
28.3 volts RMS across 2 ohms
40.0 volts RMS across 4 ohms
OUTPUT LOAD I M P E D A N C E
STEREO: 1 ohm, 2 ohms, 4 ohms,
and 8 ohms; separate t e r m i n a l s
are p r o v i d e d for each output
MONO: 0.5 ohm, 1 ohm, 2 ohms,
and 4 ohms; obtained by con-
n e c t i n g together the appro-
p r i a t e t e r m i n a l s of both chan-
nel s
RATED POWER BAND
20 Hz to 20,000 Hz
TOTAL H A R M O N I C D I S T O R T I O N
STEREO: 0.1% maximum harmon-
ic d i s t o r t i o n at any power
level from 250 m i l l i w a t t s to
200 watts per channel from
20 Hz to 20,000 Hz, both
channels operat i n g
MONO: 0.1% maximum harmonic
d i s t o r t i o n at any power lev-
el from 250 m i l l i w a t t s to
400 watts from 20 Hz to
20,000 Hz
STEREO: 0.1% maximum if instantaneous
peak power output is 400 watts or less
per channel w i t h both channels opera-
t i n g for any comb i nat ion of frequen-
c i e s , 20 Hz to 20,000 Hz
MONO: 0.1% maximum if instantaneous
peak power output is 800 watts or less
for any combination of frequencies,
20 Hz to 20,000 Hz
FREQUENCY RESPONSE
(at one watt output)
20 Hz to 20,000 Hz, +0 -0.25 dB
10 Hz to 100,000 Hz +0 -3.0 dB
N O I S E AND HUM
95 dB below rated output
R A T I N G S
OUTPUT V O L T A G E S
25 volts for d i s t r i b u t i o n l i n e s
D A M P I N G FACTOR
STEREO: 16 at I ohm o u t p u t , 50 at 2
ohms output, 30 at 4 ohms o u t p u t ,
16 at 8 ohms output
MONO: 16 at 0.5 ohms, 50 at 1 ohm,
30 at 2 ohms, and 16 at 4 ohms
output
INPUT IMPEDANCE
100,000 ohms
INPUT S E N S I T I V I T Y
Switchable: 0.75 v o l t or 2.5 v o l t s -
Level control provided for h i g h e r
i n p u t voltages
POWER R E Q U I R E M E N T S
120 v o l t s 50/60HZ, 70 to 550 watts.
I N T E R M O D U L A T I O N D I S T O R T I O N