McIntosh Receivers
A History

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MAC 1500

ELECTRICAL: Stereo. Hybrid (Solid state preamp. Tube power amp and tuner). 30w/ch into 4, 8 0r 16 ohms. Response 20-20kHz (+0.5 -0.5dB). Distortion 0.5%. Noise and hum: power amp -90dB, aux -75dB, phono -60. Damping factor 10. Input impedance: aux 500k, phono 47k, tape head 1meg. Input sensitivity: aux 0.4V, phono 1 (5.6mV), phono 2 (2.8mV) tape head 2.8mV. Tone controls: bass +15 to -18dB @ 50Hz, treble +15 to -18dB @ 10kHz. LF filter 50Hz at 12dB/octave. HF filter 5kHz at 12dB/octave.

FM SECTION: Sensitivity 2.5uV, S/N 65dB, Distortion 0.8% in stereo, Response 20-20kHz, Capture ratio 2.0dB. Image rejection 60dB, Stereo separation 30dB.

FRONT PANEL: Silver. Input selector: aux, fm mono, fm auto, phono 1, phono 2, tape hd. Balance. Slide switches: stereo or mono, tape mon: out or in, Filters: hf in or out, lf in or out, Muting: in or out, Loud: out or in. Headphone jack. Dual concentric bass and treble controls. Volume with power switch. Tuning knob. Tuning meter. Illuminated tuning dial.

BACK PANEL: Barrier strip speaker terminals 4, 8, and 16 ohms. Screw terminals: 300 ohm and 75 ohm antenna. Ground terminal. Inputs: tape mon, aux, ph 1, ph 2, tape hd. Tape out. Muting control. AC outlets: 2 switched, 1 unswitched. fuse.

TUBES: 4-7591 output, 2-6DS4, 3-6AU6, 6SC6, 6EA8, 3-12AU7, 12AX7.

Size: 5-1/2"H, 16"W and 16"D. Weight 40 lb. Sold from 1965-1967. Last retail price $499.00

MAC 1700

ELECTRICAL: Stereo. Hybrid (Solid state preamp and power amp, tube tuner). 40w/ch into 4 or 8 ohms. Response 20-20kHz (+0.5 -0.5dB). Distortion .25%. Noise and hum: power amp -90dB, aux -75dB, phono -76dB below 10 mV. Damping factor 100. Input impedance: aux 250k, phono 47k, tape head 500k. Input sensitivity: aux 0.3V, phono 2.4mV, tape head 2.4mV. Tone controls: bass and treble. +18 to -18dB. Filter: 60Hz at 12dB/octave and 5kHz at 12dB/octave.

FM SECTION: Sensitivity 2.5uV, S/N 65dB, Distortion 0.8% in stereo, Response 20-20kHz, Capture ratio 2.0dB. Image rejection 60dB, Stereo separation 30dB.

FRONT PANEL: Black and silver. Input selector: aux, tape, fm auto, phono 1, phono 2, tape hd. Balance. Slide switches: mode: stereo or mono, filter: out or in, tape mon: out or in, muting: out or in, loud: out or in, speaker: on or off. Headphone jack. Dual concentric bass and treble controls. Volume with power switch. Tuning knob. Tuning meter. Illuminated tuning dial. Indicator lights: fm mpx, aux, tape, fm, ph 1, ph 2, th, tape mon.

BACK PANEL: Barrier strip speaker terminals, Screw terminals: 300 ohm and 75 ohm antenna. Ground terminal. Inputs: tape mon, aux, ph 1, ph 2, tape hd. Tape out 1. Muting control. AC outlets: 2 switched, 1 unswitched. fuse.

TUBES: 2-6DS4, 2-6HS6, 6AU6A, 6CS6, 6EA8, 12AU7.

Size: 5-1/2"H, 16"W and 14-1/2"D. Weight 34 lb. Sold from 1967-1973. Last retail price $599.00

MAC 1900

ELECTRICAL: 55w/ch into 4 or 8 ohms. Response 20-20kHz (+0.5 -0.5dB). Distortion .2%. Noise and hum pwr amp -95dB, aux -90dB, phono -76dB. Damping factor 50. Input impedance: pwr amp 100k, aux 250k, phono 47k. Input sensitivity: pwr 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.

AM SECTION: sensitivity 75uV IHF, S/N 45dB IHF, Distortion 1%, Response 20-3500Hz @ -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.

FRONT PANEL: Black and silver. Input selector: tape 1, tape 2, am, fm, ph 1, ph 2. Headphone jack. Pushbutton switches: stereo, s rev, 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 power switch. Tuning knob. Meters: tuning and signal strength. Illuminated tuning dial. Indicator lights: fm mpx, tape 1, tape 2, am, fm, ph 1, ph 2, tape mon.

BACK PANEL: Push terminals: main speakers, remote speakers 1, remote speakers 2, am ant, gnd, 300 ohm fm. 75 ohm coaxial fm connector. Ground terminal. Inputs: tape mon 1, tape mon 2, ph 1, ph 2. Tape out 1. Tape out 2. Jumper: power amp in and preamp out. Scope outputs: tp 1 and tp 2. Built-in ferrite loopstick. AC outlets: 2 switched, 1 unswitched. fuse.

Size: 5-1/2"H, 16"W and 15"D. Weight 33 lb. Sold from 1973-1978. Last retail price $949.00

Stereotech 1200

ELECTRICAL: 50w/ch into 8 ohms. Response 20-20kHz (+1.0 -1.0dB). Distortion .2%. Noise and hum -95dB pwr amp, -89dB aux, -70dB phono. Damping factor 48. Input impedance: pwr amp 40k, aux 100k, phono 47k. Input sensitivity: pwr amp 1.2V, aux 0.35V, phono 3.0mV. Tone controls: bass and treble. +16 to -16dB.

AM SECTION: sensitivity 75uV IHF, S/N 50dB IHF, Distortion 1%, Response 20-3000Hz flat, Image rejection 60dB.

FM SECTION: Sensitivity 2.5uV, S/N 70dB IHF, Distortion 0.7% in stereo, Response 20-15kHz (+2.0 -2.0dB), Selectivity 55dB IHF, Spurious rejection 90dB IHF, Image rejection 70dB IHF, Stereo separation 35dB, SCA rejection 60dB.

FRONT PANEL: Glass panel top half. Input selector: aux 1, aux 2, am, fm, ph 1, ph 2. Pushbutton switches: mode: in or out, tape 1: monitor or normal, tape 2: monitor or normal, muting: on or off, lf: in or out, hf: in or out, comp: loud or flat, spkr 1: off or on, spkr 2: off or on. Headphone jack. Dual concentric bass and treble controls. Balance. Volume with power switch. Tuning knob. Meters: tuning and signal strength. Illuminated tuning dial. afl light. fm mpx light.

BACK PANEL: Push terminals: speaker 1 and 2, am, 300 ohm fm. 75 ohm coaxial fm connector. Ground screw terminal. Inputs: ph 1, ph 2, aux 1, aux 2. Recorder: tape 1 in and out, tape 2 in and out. Jumper: power amp in and preamp out. Built-in ferrite loopstick. AC outlets: 1 switched, 1 unswitched. fuse.

Size: 5-5/32"H, 17-1/2"W and 15-7/8"D. Weight 33 lb. Sold from 1973-1976. Last retail price $599.00

MAC 4100

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

MAC 4200

ELECTRICAL: 100w/ch. Response 20-20kHz (+0 -0.5dB). Distortion .02%. Noise and hum: pwr amp -100dB, aux -95dB, phono -90dB. Damping factor 40 or greater. Input impedance: pwr amp 22k, aux 35k, phono 47k and 47pF. 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 50dB IHF, Distortion 1%, Response 3500Hz @ -6dB, Adjacent channel selectivity 30dB IHF, Image rejection 60dB.

FM SECTION: Sensitivity 2uV (11.2 dBF) IHF, S/N 70dB IHF, Distortion 0.12% in stereo, Response 20-15kHz (+0 -1dB), Capture ratio 1.5dB, Alternate channel rejection 65dB, Spurious rejection 100dB IHF, Image rejection 80dB IHF, Stereo separation 55dB, SCA rejection 65dB.

FRONT PANEL: Black front panel. Tape 2: in and out jacks. Input selector with indicator lights: tv/au 1, cd/au 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, mute, speakers: 1, 2 and 3, power, stations: preset 1, 2, 3, 4, 5, 6, enter, manual, scan up, scan down. Controls: equalizer frequency: 30, 150, 500, 1500 and 10k. loudness: flat to max, balance. volume. Headphone jacks 1 and 2. Digital readout, led tuning/strength column, 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 , cd, tape 1 in and out, tape 2 in and out. Scope: vert and hor. Ground binding post. Remote scan jack. Power amp in. 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.

Size: 5-1/4"H, 17-9/16"W and 14"D. Weight 40 lb. Sold from 1985-1987. Last retail price $2890.00

MAC 4275

ELECTRICAL: 100w/ch into 4 ohms, 75w/ch into 8 ohms. Response 20-20kHz (+0 -0.5dB). Distortion .03%. S/N: pwr amp -100dBA, aux -95dBA, phono -90dBA. Damping factor 50 or greater. Input impedance: pwr amp 18k, aux 20k, mm phono 47k, mc phono 100 ohms. Input sensitivity: pwr amp 1.5V, aux 0.25V (8.0V max), mm phono 2.5mV (80mV max), mc phono 0.12mV (4.1mV max). Program equalizer: 30, 750, and 10,000Hz boost or cut 12dB. Sentry Monitor. Power Guard.

AM SECTION: sensitivity 25uV, S/N 50dB, Distortion 1%, Response 30-3500Hz (+0 -6dB), Adjacent channel selectivity 50dB, Image rejection 50dB, IF rejection 55dB.

FM SECTION: Sensitivity 1uV across 75 ohms (11.25 dBF), S/N 75dB, Distortion 0.2% in stereo, Response 20-15kHz (+0.5 -0.5dB), Capture ratio 1.5dB, Alternate channel selectivity 60dB, Spurious response 95dB, Image response 90dB IHF, Stereo separation 45dB, AM suppression 60dB, SCA rejection 65dB.

FRONT PANEL: Black front panel. Pushbutton switches: power, speakers 1 and 2, spkr comp, mono (with indicator light), loud, station presets 1, 2, 3, 4, 5, enter, am, fm, scan up, scan down. Headphone jack. Controls: equalizer frequency 30, 750 and 10k, balance, volume, tuning. Record selector: aux, cd, ph, tuner, t 1, t 2. Listen selector: aux, cd, ph, tuner, t 1, t 2. Digital readout, led signal strength column, fm mpx light. led power level columns in 10dB increments from 0.03w to 100w and Power Guard lights. Handles.

BACK PANEL: Screw terminals: speaker 1 and 2. Push terminals am antenna and gnd. 75-ohm fm cable input. Inputs: aux, cd, tape 1, tape 2, power amp, phono mm, phono mc, cartridge type switch: mc or mm, Ground binding post. Outputs: tape 1, tape2, preamp. External processor: to and from. 15 pin remote control receptacle. AC outlets: 3 switched, 1 unswitched. Fuse.

Size 5-1/4"H, 18-1/4"W and 15-1/2"D. Weight 25 lb. Sold from 1988-1991. Last retail price $2099.00

MAC 4280

ELECTRICAL: 100w/ch into 4 ohms, 75w/ch into 8 ohms. Response 20-20kHz (+0 -0.5dB). Distortion .03%. S/N: pwr amp -100dBA, aux -95dBA, phono -90dBA. Damping factor 50 or greater. Input impedance: pwr amp 18k, aux 20k, mm phono 47k, mc phono 100 ohms. Input sensitivity: pwr amp 1.5V, aux 0.25V (8.0V max), mm phono 2.5mV (80mV max), mc phono 0.12mV (4.1mV max). Program equalizer: 30, 750, and 10,000Hz boost or cut 12dB. Sentry Monitor. Power Guard.

AM SECTION: sensitivity 25uV, S/N 50dB, Distortion 1%, Response 30-3500Hz (+0 -6dB), Adjacent channel selectivity 50dB, Image rejection 50dB, IF rejection 55dB.

FM SECTION: Sensitivity 1uV across 75 ohms (11.25 dBF), S/N 75dB, Distortion 0.1% in stereo, Response 20-15kHz (+0.5 -0.5dB), Capture ratio 1.5dB, Alternate channel selectivity 60dB, Spurious response 95dB, Image response 90dB IHF, Stereo separation 45dB, AM suppression 60dB, SCA rejection 65dB.

FRONT PANEL: Black front panel. Pushbutton switches: power, speakers 1 and 2, mono, mute (with indicator light, loud, station presets 1, 2, 3, 4, 5, enter, am, fm, scan up, scan down. Headphone jack. Controls: equalizer frequency 30, 750 and 10k, balance, volume, tuning. Record selector: aux, cd, ph, tuner, t 1, t 2. Listen selector with indicator lights: aux, cd, ph, tuner, t 1, t 2. Digital readout, led signal strength column, fm mpx light. led power level columns in 10dB increments from 0.03w to 100w and Power Guard lights. Handles.

BACK PANEL: Screw terminals: speaker 1 and 2. Push terminals: am antenna and gnd. 75-ohm fm cable input. Inputs: aux, cd, tape 1, tape 2, power amp, phono mm, phono mc, cartridge type switch: mc or mm, Ground binding post. Outputs: tape 1, tape2, preamp. External processor: to and from. Remote CD connector. Area sensor connector. AC outlets: 3 switched, 1 unswitched. Fuse. Has hand remote HR4280.

Size 5-1/4"H, 18-1/4"W and 15-1/2"D. Weight 29 lb. Sold from 1988-1990. Last retail price $1798.00

MAC 4300V

ELECTRICAL: 100w/ch into 4 or 8 ohms. Response 20-20kHz (+0 -0.5dB). Distortion .02%. S/N: pwr amp -100dBA, aux -90dBA, phono -80dBA. Damping factor 40 or greater. Input impedance: pwr amp 22k, aux 30k, phono 47k and 47pF. Input sensitivity: pwr amp 1.5V, aux 0.25V (9.0V max), phono 2.5mV (90mV max). Program equalizer: 30, 150, 500, 1500 and 10,000Hz boost or cut 12dB. Sentry Monitor. Power Guard.

AM SECTION: sensitivity 35uV, S/N 50dB, Distortion 0.5%, Response 20-4000Hz (+0 -6dB), Adjacent channel selectivity 40dB, Image rejection 65dB, IF rejection 65dB.

FM SECTION: Sensitivity 1.2uV across 75 ohms (13 dBF), S/N 70dB, Distortion 0.08% in stereo, Response 20-15kHz (+0.0 -1.0dB), Capture ratio 1.5dB, Alternate channel selectivity 55dB, Spurious response 100dB, Image response 80dB IHF, Stereo separation 50dB, SCA rejection 65dB.

FRONT PANEL: Black front panel. Pushbutton switches: Program input: cd, fm, am, tv/au, laser, phono. Monitor: vcr/t1, vcr2/t2. Tape copy: t1 to t2, t2 to t1. Speakers: 1, 2, 3. Lockout, mono. Power. Station preset 1, 2, 3,,4, 5, 6, enter, manual, scan up, scan down. Volume up. Volume down. Controls: equalizer frequency: 30, 150, 500, 1500, 10k, loudness: flat to max, balance, tuning. Headphone jack. Digital readout, led signal strength column, fm mpx light. led power level columns in 10dB increments from 0.03w to 100w and Power Guard lights. Display lights for monitor, copy, speakers, lockout, mono. Handles.

BACK PANEL: Screw terminals: speaker 1, 2 and 3. Push terminals: am antenna and gnd. 75-ohm fm cable input. Inputs: phono, laser, tv/au, cd, vcr 1/tape 1, vcr 2/tape 2, power amp. Ground binding post. Outputs: vcr 1/tape 1, vcr 2/tape2, preamp. 15 pin video selector connector. CD control connector. Remote volume connector. Area sensor connectors 1 and 2. AC outlets: 4 switched, 1 unswitched. Fuse. Has hand remote HR4300.

Size 5-1/4"H, 18-9/16"W and 14"D. Weight 34.5 lb. Sold from 1988-1993. Last retail price $2995.00

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