The MAC4100 is a solid-state receiver with a rich, tubelike sound. The only issue collectors seem to have with this model is the aethetics. For us, it's just spot-on. This piece is all you need to get started with a pair of sensitive speakers.
- Production
- 1978-85
- Serial No.
- BY7969
- Orig. MSRP
- $1999
- Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
- Factory Specs
Type Solid State Receiver
Tuning range AM/FM
Power output 75 watts per channel into 8Ω (stereo)
Frequency response 20Hz to 20kHz
Total harmonic distortion 0.05%
Damping factor 30
Input sensitivity 2mV (MM), 250mV (line)
Signal to noise ratio 80dB (MM), 90dB (line)
Output 250mV (line)
Speaker load impedance 4Ω to 8Ω
Semiconductors 31 x IC, 45 x transistors, 62 x diodes, 1 x SCR
Finish satin silver front panel, walnut grained vinyl cabinet
Dimensions 18.6"W x 6.5"H x 15.5"D
Weight 42 lbs.
- Documentation
McIntosh MAC4100 Owner's Manual
McIntosh MAC4100 Service Manual
McIntosh MAC4100 Brochure
- The History of McIntosh
- Founded in 1949, McIntosh is known for offering distinguished home audio systems that deliver the ultimate experience in music and film. Offering products for two-channel stereo sound systems and multi-channel home theaters with surround sound, McIntosh continues to define the ultimate home audio entertainment...
[ Read More ]
- Liner Notes
The phono amplifier in the MAC4100 uses a new high technology integrated circuit operational amplifier. Its differential input stage has been optimized for low noise and low distortion performance. Electronic input selector switching uses field effect analogue switches. The mechanical input selector simply switches small amounts of DC which turn the FET analogue switches off or on. This design eliminates degradation of frequency response and also eliminates noise pickup from long signal paths necessary with conventional mechanical switching. It means, as well, that switch clicks and pops have been eliminated. The equalizer amplifier is constructed with ion implanted junction field effect operational amplifiers. These new devices amplify signals with a 6 dB better signal to noise ratio than their bipolar counterparts. Amplifiers are capable of delivering large quantities of power when they are driven to clipping. Clipping is caused when the amplifier is asked to produce more power output than it can deliver with low distortion. The MAC4100 has a built-in waveform comparator that compares the wave shape of the input signal with the output signal. If the disparity between the two signals exceeds 0.5% a front panel signal illuminates in red at the top of the power output indicators, with any further increase in distortion the Power Guard circuit will operate.
- Stock No.
- 8022592356573
The MAC4100 is a solid-state receiver with a rich, tubelike sound. The only issue collectors seem to have with this model is the aethetics. For us, it's just spot-on. This piece is all you need to get started with a pair of sensitive speakers.
Production
1978-85
Serial No.
BY7969
Orig. MSRP
$1999
Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
Factory Specs
Type Solid State Receiver
Tuning range AM/FM
Power output 75 watts per channel into 8Ω (stereo)
Frequency response 20Hz to 20kHz
Total harmonic distortion 0.05%
Damping factor 30
Input sensitivity 2mV (MM), 250mV (line)
Signal to noise ratio 80dB (MM), 90dB (line)
Output 250mV (line)
Speaker load impedance 4Ω to 8Ω
Semiconductors 31 x IC, 45 x transistors, 62 x diodes, 1 x SCR
Finish satin silver front panel, walnut grained vinyl cabinet
Dimensions 18.6"W x 6.5"H x 15.5"D
Weight 42 lbs.
Documentation
McIntosh MAC4100 Owner's Manual
McIntosh MAC4100 Service Manual
McIntosh MAC4100 Brochure
The History of McIntosh
Founded in 1949, McIntosh is known for offering distinguished home audio systems that deliver the ultimate experience in music and film. Offering products for two-channel stereo sound systems and multi-channel home theaters with surround sound, McIntosh continues to define the ultimate home audio entertainment...
[ Read More ]
Liner Notes
The phono amplifier in the MAC4100 uses a new high technology integrated circuit operational amplifier. Its differential input stage has been optimized for low noise and low distortion performance. Electronic input selector switching uses field effect analogue switches. The mechanical input selector simply switches small amounts of DC which turn the FET analogue switches off or on. This design eliminates degradation of frequency response and also eliminates noise pickup from long signal paths necessary with conventional mechanical switching. It means, as well, that switch clicks and pops have been eliminated. The equalizer amplifier is constructed with ion implanted junction field effect operational amplifiers. These new devices amplify signals with a 6 dB better signal to noise ratio than their bipolar counterparts. Amplifiers are capable of delivering large quantities of power when they are driven to clipping. Clipping is caused when the amplifier is asked to produce more power output than it can deliver with low distortion. The MAC4100 has a built-in waveform comparator that compares the wave shape of the input signal with the output signal. If the disparity between the two signals exceeds 0.5% a front panel signal illuminates in red at the top of the power output indicators, with any further increase in distortion the Power Guard circuit will operate.
Stock No.
8022592356573