Sony CDP-491 Operating Instructions

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Year 1990

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Sony CDP-491 Specification

The Sony CDP-491 is a compact disc player renowned for its precise audio playback and robust build quality, catering to audiophiles and casual listeners alike. At its core, the CDP-491 features a single-disc loading mechanism, ensuring a seamless user experience with straightforward disc handling. Its digital-to-analog converter (DAC) operates at a 16-bit resolution with a 4x oversampling digital filter, which enhances sound clarity by reducing digital noise and distortion, thereby maintaining the integrity of the audio signal.

The device supports standard audio CDs, offering a frequency response range of 2 Hz to 20 kHz, which ensures full-spectrum sound reproduction suitable for various music genres. Its signal-to-noise ratio stands at an impressive 102 dB, minimizing background noise and delivering clear audio output. Total harmonic distortion (THD) is maintained at a low 0.0045%, further contributing to the device's high-fidelity sound quality.

In terms of connectivity, the CDP-491 is equipped with both analog and digital outputs, featuring RCA jacks for analog line-out and a digital coaxial output for connecting with modern audio equipment, providing versatility in integration with different audio systems. The front panel hosts a well-organized layout with a clear display and essential controls for play, pause, stop, and track navigation, alongside a headphone jack with volume control for personal listening experiences.

The CDP-491's design reflects Sony's commitment to durability and aesthetic appeal, with a sleek, minimalist exterior that complements its technical prowess. Overall, the Sony CDP-491 stands out as a reliable and high-performance CD player that balances advanced audio technology with user-friendly features.

Sony CDP-491 F.A.Q.

How do I properly clean the lens of my Sony CDP-491?

To clean the lens of the Sony CDP-491, use a soft, dry microfiber cloth. Gently wipe the lens to remove any dust or debris. Avoid using liquids or abrasive materials, as they can damage the lens.

What should I do if my CDP-491 is not reading discs?

First, ensure the disc is clean and undamaged. Try different CDs to rule out a disc issue. If the problem persists, clean the lens as described in the manual. If the issue continues, it may require professional servicing.

How can I reset my Sony CDP-491 to factory settings?

To reset the Sony CDP-491 to factory settings, unplug the device from the power source for at least 10 minutes. Plug it back in and turn it on. This process resets the device's memory and settings.

What is the best way to prevent skipping during playback on the CDP-491?

Ensure the CD player is on a stable, vibration-free surface. Clean CDs before playing them and regularly clean the player’s laser lens. Avoid playing scratched or damaged CDs.

How can I improve the audio quality of my CDP-491?

Ensure your audio cables are securely connected and in good condition. Use high-quality audio cables and connect the player to a good amplifier and speakers. Regular maintenance and cleaning can also improve sound quality.

What type of discs can the Sony CDP-491 play?

The Sony CDP-491 is designed to play standard audio CDs. It may not be compatible with CD-RWs, MP3 CDs, or other non-standard formats.

How do I replace the belt in my CDP-491?

Replacing the belt on a Sony CDP-491 requires opening the unit, which can void warranties and requires technical expertise. It is recommended to consult the service manual or seek professional repair services for this task.

Can I connect my Sony CDP-491 to a modern audio system?

Yes, you can connect the CDP-491 to modern audio systems using RCA cables. If your system lacks RCA inputs, you may need an RCA to digital converter.

What regular maintenance should be performed on the CDP-491?

Regular maintenance includes cleaning the lens, checking and replacing belts if necessary, and ensuring connections are secure. Periodically check the player for dust accumulation and clean it with a soft cloth.

How do I troubleshoot audio distortion issues on the CDP-491?

Check all audio connections to ensure they are secure. Try different audio cables and check the condition of the CDs being played. If distortion persists, it may indicate an internal issue that requires professional servicing.