McIntosh MX 110

CONTROLS
Input Selector: Total 6 positions: AUX, MPX, FM,
PHONO 1, PHONO 2, TAPE HEADS.
Mode Selector: Total 7 positions: LTO L&R, R TO
L&R, STEREO REV., STEREO, MONO, L + R TO L,
L+R TO R.
Tone: Dual treble and bass negative-feedback con¬
trols with slip clutch for independent 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 chan¬
nel. Turn to the left to emphasize the left channel.
Phase: 2 positions: NORMAL or REVERSED:
Changing phase does not increase distortion. 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 com¬
parison of recorded tape with program source after
recording.
Tuning: Flywheel tuning—no backlash.
Muting: 2 positions: IN or OUT for interstation 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 MX 110.
AC Power—Concentric with BALANCE control:
ON-OFF.
AUDIO ELECTRICAL SPECIFICATIONS
FREQUENCY RESPONSE
+ '4-db 20 to 20,000 cycles.
DISTORTION
Less than 0.2% at rated output.
HUM AND NOISE
High-level inputs: 80dg 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.
TAPE HEAD: 3 millivolts at 220K.
TAPE MONITOR: 0.3 volt at 100K.
OUTPUTS
MAIN: 3 volts each channel.
L+R: 3 volts.
TAPE: From FM 0.9 volt.
PHONO is 0.9 volt for 9 millivolts cartridge.
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
IF-3/Limiter 1
1
6CS6
IF-4/Limiter 2
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 MPX 38KC Oscillator
1
12AX7 Phono Preamplifier Left
1
12AX7
Phono Preamplifier Right
1 12AX7
Left and Right 2nd Audio
Amplifier
1
6U8 Left 3rd Audio Amplifier
1 6U8
Right 3rd Audio Amplifier
2
Diodes
Discriminator
1 Diode Muting and Tuning Eye
Detectors
1 Diode
AGC Clamp
4
Diodes Balanced MPX Detectors
2
Diodes
Balanced Det. for Indicator
Light
17