Marantz CDR-1

Commentary

This commercial recorder was announced as the first Marantz CD recorder.

In the recording section, analog audio signals are converted into digital signals by a 1-bit A/D converter, converted by CIRC and EFM encoders, and sent to the CD-R mechanism. Digital signals are also converted directly by encoders, enabling digital to digital recording.
The CD-R mechanism block has a function for recording in addition to reading the signal for reproduction, especially for changing the laser power for reading and recording, decoding the signal from the preform track of the CD-R disc, and electronics for speed control.

The D/A converter is equipped with SAA7350, a bit stream type D/A converter, and high reliability is enhanced by using high-quality parts such as die-cast chassis with high damping effect.

Built-in recording functions include automatic power calibration, which uses the PCM area of a CD-R disc to automatically set the laser power required for disc recording, automatic track increment, which automatically increments the track number of songs after a specified period of silence, manual track input, which is manually set without automatically determining the track delimiter, automatic space mute, which automatically creates approximately three seconds of silence between tracks, and synchronous recording, which enables synchronous recording through a remote connection with Marantz / Philips D BUS.

As playback functions, it is equipped with program playback, shuffle playback, repeat playback and auto-scan function.
When playing back a CD-R disc that has not been fixed up, it has a skip function that instructs it to skip unnecessary parts of the recorded signal and treats them as if they do not exist. It also has an unskip function that restores the skipped parts.

Wireless remote control is included.

Model Rating

Type	CD recorder
Disk used	Orange Book compliant CD-R disc
Recording signal format	Red Book Compliant / Orange Book Compliant
Number of quantization bits	16-bit straight line
Sampling frequency	44.1kHz
Rated output	Analog unbalance : 2 vrms ± 1.5 db Analog balance : 3 Vrms ± 0.5 dB Digital Coaxial : 0.5Vp-p/75 Ω Digital Light : -15dBm to -21dBm
Input Sensitivity / Impedance	Analog unbalance : 140mV/50k Ω at -15dB Analog balance : 0.5V/30k Ω at -15dB Analog microphone : 0.5mV/5k Ω (at -15dB) Digital Coaxial : 0.5Vp-p/75 Ω Digital Light : -15dBm to -24dBm
Frequency characteristic	20 Hz to 20 kHz ± 0.1 dB
Total harmonic distortion factor	0.005%
Power consumption	30W
External dimensions	Width 420x Height 137x Depth 373 mm Handle Attached : Width 482x Height 137x Depth 380 mm
Weight	10.0kg
Attachment	Wireless Remote Control