This is a beautiful example MAC 4100 receiver in very good condition both cosmetically and operationally. This receiver has a very usable five band program equalizer. It can drive (3) pairs of speakers; either one at a time or all three together by just pushing a button.
Includes owners manual.
ELECTRICAL: 100w/ch into 4 ohms and 75w/ch into 8 ohms. Response 20-20kHz (+0 -0.5dB). Distortion .05%. Noise and hum: pwr amp -95dB, aux -90dB, phono -80dB. Damping factor 30 or greater. Input impedance: pwr amp 22k, aux 100k, phono 47k and 87pF. Input sensitivity: pwr amp 2.5V, aux 0.25V, phono 2.0mV. Program equalizer: 30, 150, 500, 1500 and 10,000Hz boost or cut 12dB. Sentry Monitor. Power Guard.
AM SECTION: sensitivity 75uV IHF, S/N 45dB IHF, Distortion 1%, Response 3500Hz @ -6dB, Adjacent channel selectivity 30dB IHF, Image rejection 65dB.
FM SECTION: Sensitivity 2uV (11.2 dBF) IHF, S/N 70dB IHF, Distortion 0.38% in stereo, Response 20-15kHz (+0 -1dB), Capture ratio 1.8dB, Selectivity 75dB IHF, Spurious rejection 90dB IHF, Image rejection 80dB IHF, Stereo separation 45dB, SCA rejection 60dB.
FRONT PANEL: Silver front panel. Tape 2: in and out jacks. Input selector with indicator lights: aux 2, aux 1, am, fm, ph 1, ph 2. Push switches: monitor tape 1 and tape 2, tape copy t1 to t2 and t2 to t1, mono, fm mute, speakers 1, 2 and 3, power. Controls: equalizer frequency: 30, 150, 500, 1500 and 10k. loudness: flat to max, balance. volume. tuning. Headphone jacks 1 and 2. Illuminated tuning dial. Meters: tuning and signal strength. afl light. fm mpx light. Led power level columns in 10dB increments from 0.1w to 100w and Power Guard lights. Handles.
BACK PANEL: Push terminals: speaker 1, 2 and 3, am, gnd, fm. Inputs: ph 1, ph 2, aux 1, aux 2. Recorder: tape 1 in and out, tape 2 in and out. Scope: tp 1 (vert) and tp 2 (hor). Ground binding post. Jumper: power amp in and preamp out. Built-in ferrite loopstick. 75-ohm fm cable input. AC outlets: 2 switched, 1 unswitched, 2 switched (turntable auto-on). Auto-manual switch. Turntable outlet fuse. Main fuse. [Serial numbers BY3000 and later have an FM preselector switch on the back panel: in or out]
Size: 5-1/4"H, 17-9/16"W and 13-1/2"D. Weight 42 lb. Sold from 1978-1985. Last retail price $1999.00