McIntosh MR65A
The McIntosh MR65A tuner delivers exceptional FM/AM reception with the clarity and reliability that defined McIntosh's approach to radio tuner design. This tuners exemplifies the engineering philosophy and audio quality that made McIntosh a respected name in the high-fidelity industry.
Specifications
| Specification | Value |
| Tuning Range | 87.5-108 MHz (FM), 530-1710 kHz (AM) |
| Sensitivity | 1.8μV (FM), 50μV (AM) |
| Signal-to-Noise Ratio | 75dB (FM), 50dB (AM) |
| Total Harmonic Distortion | 0.3% (FM), 1.0% (AM) |
| Capture Ratio | 1.5dB |
| Selectivity | 70dB |
| Stereo Separation | 40dB |
| Output Level | 500mV |
| Dimensions | 17" × 5" × 12" |
| Weight | 18 lbs |
Historical Context
During the 1970s, FM broadcasting reached new heights of quality, and the MR65A was designed to extract the maximum performance from broadcast signals. It became a reference for tuner performance in its price class.
During its production years from 1972-1982, this model competed with other premium audio components of the era and helped establish McIntosh's reputation for quality and performance. Many units remain in service today, a testament to their durability and timeless design.
Design Features
The MR65A incorporates advanced RF circuitry, precision tuning mechanisms, and sophisticated multiplex decoding for stereo FM. Its design emphasizes stable reception, low noise, and accurate signal processing.
The MR65A incorporates several innovative features for its time, including high-quality transformers, precision capacitors, and carefully selected transistors or tubes. Its construction emphasizes both sonic performance and long-term reliability, with attention to details like chassis rigidity, component layout, and thermal management.
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