Panasonic SJ-MR100

~~~ SJ-MR100 ~~~

PORTABLE MD RECORDER

MiniDisc [MD] is a magneto - optical disc-based data storage device initially intended for storage of up to 74 minutes and, later, 80 minutes, of digitized audio. In the form of Hi-MD, it has also developed into a general-purpose storage medium. MiniDisc was announced by Sony in September 1992 and released that November for sale in Japan and in December for the USA and Europe. The music format was originally based exclusively on ATRAC audio data compression, but the option of linear PCM recording was later introduced to attain audio quality comparable to that of a compact disc. MiniDiscs were very popular in Japan but made a limited impact elsewhere. {wikipedia}

Introduction

1999 Panasonic SJ-MR100 Introduced: (June 1999) As the World's Smallest and lightest MD Recorder as of June, 1999.  it cost 46,000 Yen. Unit incorporates .25 mm Rule Newly developed LSI and one Beam Optical pickup. Text Display on Main Body is 2 X 12 characters. Edge mounted Jog dial with Integral Push Button for Labeling and Track selection - Can title while Playing a Track. Special "one Track Record" function. 40 Second Shock memory. Synchro-Recording, sampling rate Converter. time Mark mode (Automatic Track Marks at 3 or 5 minute intervals). Battery charges only when UNIT is stopped. Recording level Control Limited to High / low sensitivity Switch. the SJ-MR100 model has been awarded the Good Design Award in Japan.

Features

• Jog dial for editing and titling. Jog dial functions turning and clicking. 
• LCD Display with 2 lines of 12-character on the unit.
• Remote control with 6 character LCD with back light.
• Remote display: track name, play time, battery life, play mode & sound preset. 
• Train function: reduces sounds that may annoy others around you. 
• Track skip. 
• S-XBS - Bass Boost Sound Enhancement.
• Title search function allows another track to be selected by name while unit is playing. 
• Track titling while playing the track.
• Synchronized recording.
• Monaural recording - double the recording time.
• Inputs: line, optical, mic. 
• Output: headphone. 
• English and Japanese Kana song title entry.

 

Sound Quality

EQ variable is X-SBS -> TRAIN -> NORMAL bright sound style by Panasonic. Adjustable bass moderately satisfied, but not so much Rocking kick (X-SBS level). Anlog sound rock but digital is a bit dull. with different set of Headphone sound was low but excellent quality.

Power source

Recharge time: 3 hours. 

• 8.5 hours playback, or 4.5 hours of recording, on a rechargeable battery.
• 10.5 hours playback, or 2.0 hours of recording, on a single AA external battery. 
• 20 hours playback, or 9.5 hours of recording, on a rechargeable battery and the external battery case. 
• 1 AA size battery using the supplied Battery case. 
• 1 NiMH rechargeable battery.
• Adapter DC 1.8 V

Accessories

• Stereo Earbud Headphones connected via a backlit remote controller. 
• 1 NiMH rechargeable battery. 
• Battery case for use with 1 AA size battery. 
• Carrying case. 
• One year Japanese warranty. 
• Operation manual in both Japanese and English. 
• Japanese 100 volt AC adapter (AC-D401) 
• RCA jack to mini plug connection Cable 

Specifications

• Size:                                                  84 x 77 x 18.9 mm.
• Weight:                                           136 g without rechargeable battery cell                                                                          161 g with rechargeable battery cell 

■ AUDIO

• System:                                           MiniDisc digital audio system
• Recording system:                     Magnetic field modulation direct overwrite
• Laser:                                              Semiconductor laser (780 nm) 
• Sampling frequency:                44.1 kHz
• Sampling rate converter:       32 kHz/44.1 kHz/48 kHz
• Coding:                                          Adaptive Transform Acoustic Coding (ATRAC)
• No. of channels:                         2 (left and right, stereo) 1 (monaural)
• Frequency response:               20 Hz - 20,000 Hz (+0 dB, -8dB)
• Wow and flutter:                       Below measurable limit
• Headphone amp:                      5 mw + 5 mw  
• Phone jack Impedance:   14Ω

Service Manual

 

More Info and editing will follow.............

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