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General| Type | Stereo Receiver |
|---|---|
| Frequency Response | 20Hz to 20kHz |
| Inputs | Phono, Aux, Tape |
| Damping Factor | 30 |
| Tuning Range | FM |
| Input Sensitivity | 2.5 mV (Phono) |
| Output | Tape |
| Speaker Load Impedance | 4-16 ohms |
Details for reaching McIntosh customer service for inquiries about the receiver.
Information and terms for obtaining a complimentary two-year factory service contract.
Details McIntosh's guarantee of the instrument's performance and freedom from defects.
Explains the necessity of proper ventilation for extending the life of electronic instruments.
Provides step-by-step instructions for preparing a cabinet for the MAC 1900 installation.
Instructions for connecting tape recorders for both recording and playback/monitoring operations.
Instructions for connecting record players and turntables to the MAC 1900's phono inputs.
Guidance on establishing a correct ground connection to prevent hum and noise.
Details on connecting various FM antenna types and the built-in or external AM antenna.
Information on connecting the Maximum Performance Indicator and utilizing rear AC power outlets.
Instructions for connecting main and remote speaker systems to the MAC 1900.
Procedure for connecting McIntosh speakers when using an environmental equalizer.
Explanation of the volume control's dual function and the balance control for channel adjustment.
Details on using the slide controls for adjusting treble and bass frequencies.
Instructions for connecting and using low-impedance dynamic stereo headphones.
Explanation of each input selector position: Tape 1, Tape 2, AM, FM, Phono 1, and Phono 2.
Explanation of the tuning dial scales for AM, FM, and the logging scale.
Description of the FM MPX, Signal Strength, and Tuning meters.
Overview of the function of various pushbuttons, including Mode Selector, Loudness, and Monitor.
Details on how to use the Mode Selector for different speaker output configurations.
Explanation of the Loudness control and the function of the Tape Monitor switches.
Guidance on operating the LF/HF filters and the FM muting circuit.
Procedures for adjusting stereo phase and balancing channel loudness.
Instructions for playing back stereo and monophonic vinyl records.
How to listen to stereo audio content from tape recorders.
Step-by-step guide for copying audio content between two tape recorders.
Instructions for tuning AM and FM stations and enabling stereo reception.
Detailed technical specifications for the preamplifier and power amplifier sections.
Technical performance data for the AM tuner section.
Technical performance data for the FM tuner section, including sensitivity and selectivity.
Summary of important controls and features such as Bass, Treble, Loudness, and Input selector.
Details regarding the physical size, front panel finish, and weight of the unit.
Graphs illustrating power output versus harmonic and intermodulation distortion.
Charts showing frequency response for filters, loudness, and RIAA equalization.
Graphs detailing FM audio output, noise, and distortion levels versus RF input signal.
Graphs illustrating FM IF characteristics, frequency response, and stereo separation.
Graphs showing AM minimum usable sensitivity and frequency response.
Graph illustrating the AM selectivity characteristic at 1000 kHz.
Overview of the MAC 1900's audio circuitry, including phono, tape, filter, and power amplifiers.
Detailed description of the phono amplifier's transistors, gain, and RIAA compensation.
Explanation of the high-level amplifier stages, mode selector, balance, and loudness controls.
Description of the filter amplifier's role in low and high-frequency noise filtering.
Detailed technical description of the power amplifier, its protection circuits, and output stages.
Information on the various power supplies, their regulation, and filtering capabilities.
Technical overview of the FM tuner's RF and IF sections, including variable capacitor and shielding.
Further details on FM tuner RF circuitry, integrated circuits, and IF filters.
Technical explanation of the FM stereo multiplex detection and decoding circuit.
Detailed description of the AM tuner's RF amplifier, IF transformers, and loopstick antenna.
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