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McIntosh Laboratory, Inc. 2 Chambers Street, Binghamton, New York 13903-2699
Tel (607) 723-3512 - US Toll-Free (800) 538-6576 - Fax: (607) 724-0549- www.mcintoshlabs.com
For the Consumers Protection: In order to ensure the highest level of customer satisfaction, new McIntosh
products may only be purchased over-the-counter or delivered and installed by an Authorized McIntosh Dealer.
McIntosh products that are purchased over the Internet, by phone or mail order are presumed to be used and
do not qualify for any McIntosh Warranty. McIntosh does not warrant, in any way, products that are purchased
from anyone who is not an Authorized Dealer or products that have had their serial number altered or defaced.
C46
Audio Control
Center
Silent Electromagnetic Switching
McIntosh Silent Electromagnetic
Switches, located literally at the
input panel, eliminate the need for
audio signals to travel through any
internal wiring where it would be
subject to noise pickup. The state-
of-the-art switches consist of
ruthenium contacts-the finest
conducting material known-
which are sealed within a glass
tube containing an inert oxygen-
free gas that eliminates all
possibility of contamination and
results in a distortion-free switch
that never needs cleaning. The
glass tube is enclosed within a
multi-layer copper coil, which
provides the means to actuate
the switch and also provides
additional shielding.
The entire assembly is finally
encased in a shock-absorbent
plastic housing for protection.
VRV (Variable Rate Volume)
Digitally Controlled Attenuator
The output attenuator controls
volume over 214 steps of .5dB
each with accuracy within .1dB.
The volume vs. rotation rate varies
as preamplifier gain varies and
attenuation changes occur at the
zero crossings of the audio
signal to prevent audible artifacts
during adjustment.
FREQUENCY RESPONSE
20Hz to 20kHz, +0 / -0.25dB
TOTAL HARMONIC DISTORTION
0.002% max. from
20Hz to 20kHz
A-WEIGHTED SIGNAL-TO-NOISE RATIO
Phono: 86dB
High Level: 97dB
RATED OUTPUT VOLTAGE
5 Vrms at balanced outputs
2.5 Vrms at unbalanced outputs
INPUT IMPEDANCE
Phono, MM: 47K ohms, 65pf
High Level: 47K ohms (balanced)
22K ohms (unbalanced)
OUTPUT IMPEDANCE
240 ohms (unbalanced)
480 ohms (balanced)
VOLTAGE GAIN
Phono to Tape Out: 40dB
High Level to Tape Out: 0dB
High Level to Main Output: 15dB
MAXIMUM VOLTAGE OUTPUT
10.0 Vrms unbalanced, 20 Vrms
balanced
SENSITIVITY
Phono: 4.5mV for rated output
High Level: 450mV, 900
balanced for rated output
Balanced: 900mV for rated
output
POWER REQUIREMENTS
120V 50/60Hz, 50 wattsDIMENSIONS (H X W X D)
5 3/8" (13.65 cm) x 17 1/2" (44.45
cm) x 19" (48.26 cm)
Panel clearance required in front of
mounting panel is 1 3/4 inches (4.5
cm) for connections
WEIGHT
26 lbs. (11.79kg) net
40.41 lbs. (18.33kg) boxed
12.02.C46.20k.JCP 35005100
C46
Remote
Control
