MR 85 McIntosh
AM - FM STEREO TUNER The Compendium
FRONT PANEL: Glass with illuminated teal/gold nomenclature. PRESET control. Digital
readout: preset station tuned, frequency display, broadcast band and signal
strength. FM stereo signal light. TUNING control. 7 Push buttons: ENTER (with
indicator), DISPLAY, SPATIAL (with indicator), MONO, TUNER 1 or 2, AM or FM, ‚ SEEK, SEEK
•, AUTOMUTE (with indicator), STANDBY/ON (with indicator), POWER ON or OFF. Additional
AM/FM TM 1 tuner is optional.
BACK PANEL: ANTENNA 1: external AM ANTenna (RAA1) and 75 Ω FM ANTenna coax input.
TUNER 1 OUTPUT LEVEL control. Left & Right TUNER 1 VARIABLE and FIXED OUTPUTS. POWER
CONTROL IN and OUT. Power cord receptacle. DATA IN jacks for TUNER 1 and 2. Left &
Right TUNER 2 VARIABLE and FIXED OUTPUTS. TUNER 2 OUTPUT LEVEL control. Spaces
reserved for optional TM 1 second tuner module: ANTENNA 2: external AM ANTenna
(RAA1) and 75 Ω FM ANTenna coax input.
FM SECTION: Sensitivity: 14dBF or 1.4uV across 75 ohms. Stereo 50dB Quieting
Sensitivity: 35dBF or 15uV across 75 ohms. Response: 20-15kHz (+0 -1dB).
Distortion: 0.45% in stereo. Capture Ratio: 1.2dB. Image Rejection: 75dB.
S/N: 70dB stereo. Alternate Channel Selectivity: 75dB. Separation: 45dB.
Spurious Rejection: 100dB.
AM SECTION: Sensitivity: 20uV. Response: 50-6kHz NRSC. Distortion: 0.5%.
Adjacent Channel Selectivity: 45dB. S/N: 58dB. Image Rejection: 65dB.
Power Requirements: 120V at 20 Watts.
OTHER: Optional TM 1 second tuner can be mounted inside of chassis.
© 2007-2015 VintageMac – Larry Hodson Rev. 114 Page 1 / 2
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