McIntosh | MAC 1900 | MAC 1900 McIntosh

MAC 1900
McIntosh
AM-FM STEREO RECEIVER
The Compendium
FRONT PANEL: Gold and black anodized aluminum panel. Illuminated tuning dial.
Indicator lights: FM MPX, TAPE 1, TAPE 2, AM, FM, PH 1, PH 2, TAPE MON. Meters: TUNING
and SIGNAL STRENGTH. Tuning control. 7 INPUT SELECTOR: TAPE 1, TAPE 2, AM, FM, PH 1,
PH 2. HEADPHONES jack. Pushbutton switches: STEREO, STEREO REVERSE, MONO, L TO
L&R, R TO L&R, L+R TO L, L+R TO R, LOUD, MONITOR: TAPE 1 and TAPE 2, FILTERS: LF and HF,
MUTING, SPEAKERS: MAIN, REMOTE 1, REMOTE 2. Slide type BASS and TREBLE controls with
center detent. BALANCE. VOLUME with on-OFF switch.
EARLY
LATE
BACK PANEL: LEFT and RIGHT output push terminals for MAIN SPEAKERS, REMOTE SPEAKERS
1 and REMOTE SPEAKERS 2. Built-in ferrite AM loopstick. 7
FUSE. Power cord. AC
OUTLETS: 1 UNSWITCHED, 2 SWITCHED. Scope outputs: TP 1 and TP 2. GROUND terminal.
Push terminals for: AM ANTenna, GrouND. 300 Ω FM ANTenna. 75 Ω FM ANTenna coax
input. Jumpers: AMP INPUT and PREAMP OUT. TAPE OUT 1. TAPE OUT 2. INPUTS: TAPE
MON 1, TAPE MON 2, PH 1. Ground screw terminal. PH 2 INPUT.
(Late units had a LOAD
IMPEDANCE switch: 8-16 Ω or 4 Ω between the power cord and unswitched outlet.
Early cover had round holes. Late cover had slots.)
AM SECTION: Sensitivity: 75uV IHF. S/N: 45dB IHF. Distortion: 1%, Response: 203500Hz @ -6Db. Image Rejection: 65dB. Adjacent Channel Selectivity: 30dB.
FM SECTION: Sensitivity: 2.5uV. S/N: 70dB IHF. Distortion: 0.7% in stereo.
Response: 20-15kHz (+1.0 -1.0dB). Capture Ratio: 1.8dB. Selectivity: 55dB
IHF. Spurious Rejection: 90dB IHF. Image Rejection: 80dB IHF. Stereo
Separation: 34dB. SCA Rejection: 50dB.
© 2007-2015
VintageMac – Larry Hodson
Rev. 114
Page 1 / 2
MAC 1900
McIntosh
AM-FM STEREO RECEIVER
The Compendium
SPECIFICATIONS: 55w/ch into 4 or 8 ohms. Response: 20-20kHz (+0.5 –0.5dB).
Distortion: .2%. Noise and Hum: power amp -95dB, aux -90dB, phono -76dB.
Damping Factor: 50. Input Impedance: power amp 100k, aux 250k, phono 47k.
Input Sensitivity: power amp 2.5V, aux 0.25V, phono 2.0mV. Tone Controls:
bass and treble. +16 to -16dB. LF Filter: 50Hz at 12dB/octave. HF Filter: 7kHz at
12dB/octave. Direct coupled. Power Requirements: 120V at 300 Watts.
MAC 1900 - Sold from 1973 - 1979. S/N: 1X001~9X999, AL1001~AL2205 &
AN1020~AN4201 (13,383 UNITS)
Size: 5-1/2"H, 16"W and 15"D. Weight: 33 lb. Last retail price $949.00
© 2007-2015
VintageMac – Larry Hodson
Rev. 114
Page 2 / 2
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