Marantz CD-40 Compact Disc Player: A Detailed Description
The Marantz CD-40 is a vintage stereo compact disc player that was likely introduced around the late 1980s or early 1990s. It represents a time when CD technology was becoming more mainstream, offering a digital alternative to vinyl records and cassette tapes. While specific details and production years can vary, the CD-40 generally embodies Marantz's reputation for producing quality audio components.
Key Features and Characteristics:
CD Playback: The primary function of the CD-40 is to play standard Red Book audio CDs. It is designed to accurately read and reproduce the digital audio information stored on these discs.
Digital-to-Analog Converter (DAC): The CD-40 incorporates a DAC chip to convert the digital signal from the CD into an analog audio signal that can be sent to an amplifier and speakers. Based on available information, it may utilize a TDA1541A-R1 DAC, a popular 16-bit chip known for its musicality.
Oversampling: To improve the quality of the analog output, the CD-40 likely employs oversampling technology, potentially at a rate of 4x. Oversampling helps to push unwanted digital artifacts to higher frequencies, where they can be more effectively filtered out.
CD Mechanism: The player would have featured a transport mechanism responsible for securely holding and precisely spinning the CD while the laser reads the data. The CDM-4/19 mechanism is a possibility for this model, known for its reliability.
Analog Outputs: Typically, the CD-40 would have a pair of standard RCA analog output jacks for connecting to an amplifier or receiver.
Digital Output (Possible): Some versions or models from this era might also include a digital output (coaxial or optical) allowing connection to an external DAC or digital recording device.
Front Panel Controls: The front panel would feature essential controls for playback, including play/pause, stop, track skip (forward/backward), and possibly a disc open/close button. Some models might also have a display showing track number, time elapsed, or other relevant information.
Remote Control (Likely): It's probable that the Marantz CD-40 came with a remote control, offering convenient operation from a distance. This remote would typically mirror the front panel controls and might include additional functions like programming tracks or repeat modes.
Build Quality: Marantz products from this era were generally well-built, emphasizing reliable performance. The CD-40 likely features a solid chassis to minimize vibrations that could negatively impact sound quality.
Champagne Finish (Possible): Some sources mention a "Champaign" finish for the CD-40, suggesting a light gold or silver aesthetic, which was a popular style for audio components during that period.
Specifications (Based on available information):
Disc Format: CD
Digital Converter: TDA1541A-R1, 16 bit, 4 x oversampling (Note: This is based on limited information and may vary).
CD Mechanism: CDM-4/19 (Note: This is based on limited information and may vary).
Frequency Response: 2Hz to 20kHz
Dynamic Range: 96dB
Signal to Noise Ratio: 102dB
Channel Separation: 102dB
Total Harmonic Distortion: 0.0025% (This specification is from one source and should be considered indicative).
Dimensions: Approximately 420 x 100 x 280 mm (width x height x depth)
