McIntosh MX 110

Controls
Input Selector: Total 6 positions: AUX,
MPX, FM, PHONO 1, PHONO 2, TAPE
HEADS.
Mode Selector: Total 7 positions: L TO L&R,
R TO L&R, STEREO REV., STEREO, MONO,
L+R TO L, L+R TO R.
Tone: Dual treble and bass negative-feed-
back controls with slip clutch for independ-
ent adjustment of each channel. Bass
Boost: 15db at 50 cycles. Bass Cut: 18db
at 50 cycles. Treble Boost: 15db at 10,000
cycles. Treble Cut: 15db at 10,000 cycles.
Balance: Turn to right to emphasize the
right channel. Turn to the left to emphasize
the left channel.
Phase: 2 positions: NORMAL or REVERSED:
Changing phase does not increase distor-
ELECTRICAL
Frequency Response
±½db 20 to 20,000 cycles.
Distortion
Less than 0.2% at rated output.
Hum and Noise
High-level inputs: 80db below rated output.
Low-level inputs: less than 3 microvolts at
input terminals.
Input Sensitivity
AUX: 0.3 volt at 200K.
PHONO 1:3 millivolts at 47K.
PHONO 2: 3 millivolts at 47K.
tion. H.F. Cutoff Filter: 2 positions: Flat, or
5KC cutoff. (20db per octave.) L.F. Cutoff
Filter: 2 positions: Flat, or 50 cycles cutoff.
(20db per octave.)
Loudness: Fletcher Munson compensation.
Tape Monitor: 2 positions: IN and OUT. For
comparison of recorded tape with program
source after recording.
Tuning: Flywheel tuning—no backlash.
Muting: 2 positions: IN or OUT for intersta-
tion noise suppression.
Level Set: Three left and three right controls.
2 for AUX, 2 for PHONO 1, and 2 for
PHONO 2. These controls are located back
of the front panel on the top of the MX110.
AC Power—Concentric with BALANCE con-
trol: ON-OFF.
SPECIFICATIONS
TAPE HEAD: 3 millivolts at 220K.
TAPE MONITOR: 0.3 volt at 100K.
Outputs
MAIN: 3 volts 2 in parallel each channel.
L+R: 3 volts.
TAPE: From FM at 100% modulation 0.9
volt from PHONO when cartridge output
is 9.0 millivolts—0.9 volt; with rated input
—0.3 volt.
POWER REQUIREMENTS: 105-125 volts AC
50/60 cycles; 75 watts.
FUSE: 1 amp. Slo-Blo.
TUBE COMPLEMENT
1 6DS4 R.F. -1 amplifier (nuvistor)
1 12AT7 R.F.-2 mixer
1 6AB4 Oscillator
1 6AU6 IF-1
1 6AU6 IF-2
1 6AU6 lF-3/Limiter 1
1 6CS6 IF-4/Limiter2
1 12AT7 Muting/L+R Amplifier
1 6HU6/EM87 Tuning Indicator
1 6D10 FM AUDIO/Left and Right
1st Audio Amplifier
1 6U8 MPX Amplifier and 19KC
Separator/Indicator control
1 12AU7
1 12AX7
1 12AX7
1 12AX7
1 6U8
1 6U8
2 Diodes
1 Diode
1 Diode
4 Diodes
2 Diodes
MPX 38KC Oscillator
Phono Preamplifier Left
Phono Preamplifier Right
Left and Right 2nd Audio
Amplifier
Left 3rd Audio Amplifier
Right 3rd Audio Amplifier
Discriminator
Muting and Tuning Eye
Detectors
AGC Clamp
Balanced MPX Detectors
Balanced Det. for Indicator
Light
4