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Block diagram illustrating the main functional units of the Audiolab 8000T FM/AM tuner.
Detailed schematic of the FM front-end receiver, including RF amplification, tuning, and mixing stages.
Schematics for the FM Intermediate Frequency (IF) amplifier, filters, limiter, and demodulator circuits.
Detailed circuitry for stereo decoding, pilot tone processing, muting control, and audio de-emphasis.
Schematic diagram for the AM receiver section, covering medium and long wave reception.
Schematics for the Phase-Locked Loop (PLL) frequency synthesizer and associated loop filters.
Circuit diagrams detailing the power supply unit, voltage regulators, and power distribution.
Schematics for the microprocessor control, LCD driver, and front panel keyboard interface.
Service bulletin addressing inconsistent signal strength readings caused by a conductive grommet strip.
Table correlating serial numbers with specific FM front-end issues and recommended solutions.
Specific schematic showing the R474 and C710 modification for the FM front-end on certain serial numbers.
| Type | FM/AM Tuner |
|---|---|
| FM Tuning Range | 87.5 - 108 MHz |
| AM Tuning Range | 522-1611 kHz |
| Signal to Noise Ratio (AM) | 50 dB |
| Total Harmonic Distortion (AM) | 0.5% |
| Output Voltage | 775mV |
| Power Consumption | 15 W |
| Signal to Noise Ratio (FM) | 75 dB |
| Total Harmonic Distortion (FM) | 0.1% |
| Frequency Response (FM) | 20 Hz - 15 kHz |