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My name is TheLion. I am an Audiophile and a 'Walkman' collector. I have started this blog for all those who share the same interest. On this blog, I will share my love with the world of Personal Stereos. This is limited only to Personal Stereos and Minidisc Players and maybe some other unique gadgets. The common rule with all those Personal Stereos is their State-of-the-Art; High-Quality Sound, Excellent build and Unique design - in other words, Personal Hi-Fidelity Analog music players for the soulful man. The main interest (but not limited to) in Walkmans is AIWA Personal Stereos from their early years' product line from 1984 to 1991. The main interest in Minidiscs (but not limited to) is Sharp Minidiscs. I will post pictures of rare Walkmans and Minidiscs with information. Thank God for making all this possible, I hope you all will enjoy my blog.
Note: I started this blog in 2011 to offer a unique perspective for educational purposes in the world of personal Stereo. I will gladly share most of the info regarding the gadgets displayed on this blog. However, Since this blog consumes a lot of time and great efforts to assemble and maintain as current as possible, I do not get paid or gain (thru advertisement) any money to do so. Hence, I do it in my free time. Therefore, If you enjoy this one of a kind comprehensive blog Please consider a nice donation according to your enjoyment of this blog. your kind support will surely make this blog alive & Kick for years to come, it will also entitle you to a free technical support ie; questions, inquiries, and requests. please drop me a line and I'll be happy to assist ThePersonalHiFi@Gmail.com. Thank you TheLion, September 2017.

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Monday, March 28, 2016

Sharp MD-MT66 / MD-MT866




~~~ MD-MT866/MT66 ~~~
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 Sharp introduced the MD-MT66, the smiling Minidisc player: 6/1999 it cost 46,000 Yen As the World's Smallest and lightest MD Recorder as of June 1999. The new laser pickup is super-thin efficient & equipped with the new hologram laser!  This cool Unit incorporates low consumption electric power type LSI with a 0.25 um process that uses the latest technology 3 Beam Optical pickup. Edge mounted shuttle Jog dials 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. Battery charges only when UNIT is stopped. Manual and Auto level Control Recording. comes in 3 unique metal colors: Silver, Pink, and Blue. In 2000 the Sharp MD-MT66 has been awarded the Good Design Award in Japan.




Features
  • LSI Hologram Chipset (Sharp ATRAC 7) 
  • 24 bit DAC and ADC.
  • 40-second shock memory.
  • Optical input.
  • LCD Edge lights around the LCD show the operating condition.
  • 3 modes Bass boost.
  • Top open (clam-shell) disc insertion.
  • Back-lit LCD remote control.
  • Analog and digital recording levels.
  • Mic and digital synchronous start recording.
  • Disk/track "name stamp" function allows titles to be cloned from another disc.
  • 2 x high-speed playback option on mono recordings.
  • Conferencing Voice-activated recording.
  • Charging stand for the supplied flat Nickel-Metal Hydride battery.
  • The unit can be operated while recharging.
  • Available in silver, blue, and pink.


                                     
Owners Manual - names of parts




Sharp MD-MT866 Original Remote control


MD-MT 866 Original manufactured picture.




Sound Quality
The Sharp MD-MT66/866 has an overall excellent clear sound without any enhancement, a very good sound stage with very nice channel separation. Both Analog and digital sounds are very good. The Mt66/866 has three sound enhancements: Bass 1-2-3. Emphasizing the sound with bass 1 sounds pretty cool for low end bass tracks, while Bass 2 gives a more mesmerizing deep effect for vocals etc and strings. for rock or trance music etc. The enjoyment that is completed by the Bass 3 is more than enough for any enthusiast. Sharp really did a great job with this cool Minidisc, the only downside, unfortunately, is the low sound level which is barely satisfying, however this is a common and known problem for this format. 


Power source


Recharge time: Approx. 3.5 hours. 
  • 12 hours playback, or 6.5 hours of recording, on a rechargeable battery.
  • 18 hours playback, or 6 hours of recording, on a single AA external battery. 
  • 30 hours playback, or 15.5 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 - AC 5V
  • Power consumption 7W.

Accessories
SHARP MD-MT66 Accessories and SHARP MD-MT866 Box
  • LCD remote, earphones
  • Li-Ion cell, AC adapter
  • optical cable
  • connection cord
  • AA cell case
  • hand strap, carrying case
  • instruction manual, warranty card.
  • Charging Stand



MD-MT866 Packing




Specifications
  • Size:                                                  D: 78.9 x W: 72 x H: 19.5 mm.
  • Weight:                                           137 g with rechargeable battery cell
                                                               125 g without rechargeable battery cell
■ AUDIO
  • System name:                              SHARP MD-MT66 S/- (silver) B/- (blue)/P - (pink)
  • Reading method:                       Non-contact optics reading method                                                                                  (semiconductor laser use)
  • System:                                           MiniDisc digital audio system
  • Recording system:                     Magnetic field modulation direct overwrite
  • Laser:                                              Semiconductor laser (785 nm) 
  • Sampling frequency:                44.1 kHz (32 kHz & 48 kHz are converted to                                                                44.1kHz and then recorded)
  • Sampling rate converter:       32 kHz/44.1 kHz/48 kHz
  • Coding:                                           ATRAC 24-Bit computed Type 
  • No. of channels:                         2 (left and right, stereo),  (long play) 1
  • Frequency response:                20 Hz - 20,000 Hz (±3dB)
  • Wow and flutter:                       Unmeasurable (less than ±0.001% w. Peak)
  • Headphone amp:                       RMS: 10 mW = 5 mw + 5 mw  (0.2% T.H.D.)
  • Phone jack Impedance:         32Ω


Service Manual

SHARP MD-MT866 Service Manual

MD-MT866 Waveforms of MD circuitry & MD-MT866 Cabinet Exploded View

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






Coming Up............