Showing posts with label COMPACT DISC. Show all posts
Showing posts with label COMPACT DISC. Show all posts

19 October 2015

PCM digital audio Compact Cassette


At the Tokyo Audio Fair in 1981 there were no more than 16 companies showing CD players before the official launch in 1982. On the other hand the same companies - JVC, PIONEER, SANYO, SHARP, SONY - demonstrated PCM tape decks that were using normal Compact Cassette. The only problem was that there was no standardization of the recording format. The cassette were not interchangeable, each company using a different recording format, track layout and tape speeds. The result is as we all know that only the CD was succesfull and the Compact Casssette remained as an analog audio recording format....or the storage device of the world first Digital Photo Camera.

SANYO PCA-D8 1982

JVC digital compact cassette 1982 (not the later DCC)

SONY S-DAT 1981

In 1985 SHARP presented the: "PCM digital audio compact cassette deck RT-X5 OPTONICA" This was made by SHARP as an early PCM system using a "16-track integrated head system" using a regular "Compact Cassette". 
                                     Here are some technical data for the SHARP RT-X5 :
14 bit / 44.1 khz sampling frequency
Frequency response 2 - 20.000 Hz +/- 0.5dB
Tape speed 9.5cm/s
...and 10kg

SHARP RT-X5 1985

It was only in the late 1992 that PHILIPS presented the DCC (Digital Compact Cassette) a backwards compatible format that allowed to record in digital format to the new DCC cassette but also to play back your old Compact Cassette. But this was too late and it is known as one of the biggest failure in audio history.

PHILIPS DCC 1992

18 April 2015

Vertical CD player (part 2 KYOCERA)


cd player

This is part 2 of our series dedicated to first generation vertical loading CD players. This part is dedicated to the Cybernet by KYOCERA based CD player family. The Cybernet by KYOCERA DA-01 model was in fact first advertised in the USA as Cybernet (a company that KYOCERA recently bought) in 1982. That was before the official launch of the Compact Disc. A series of rebadged units were made based on this player, the strangest being the Phase Linear because at this time Phase Linear belonged to Pioneer and they had their own first generation CD player. See all models of this range:

cd player
KYOCERA DA-01

cd player
AKAI CD-D1

cd player
MICRO SEIKI CD-M1

cd player
Phase Linear 9500

cd player
Rotel RCD 870

cd player
Tensai TAD 2000

cd player
betalaser ADD 200


Continue reading:   Part 1   Part 3   More CD


22 February 2015

Vertical CD player (part 1 HITACHI)


Various vertical CD players were built during the first 30 Years of CD but in this article we would focus on first generation vertical CD players. These are interesting because both inventors of the CD player, SONY and PHILIPS made their first generation CD player as horizontal playing CD units. SONY opted for tray loading while PHILIPS went with top loading, closely followed by a tray loading model.

The two biggest first generation CD player manufacturers were of course SONY and PHILIPS. While SONY havent supplied it's units to be rebadged by other manufacturers PHILIPS had many rebadged versions. The biggest supplier of these first generation CD players was however HITACHI. Below you can see the HITACHI based models that came from japanese manufacturers:

HITACHI DA-1000


cd player

Lo-D DAD-1000 
(Brand name used by HITACHI for the japanese domestic market) 

cd player

JVC XL-V1

cd player

Victor XL-V1
(Brand name used by JVC for the japanese domestic market)

cd player

DENON DCD-2000

cd player

With an intense activity around the launch of compact disc, french company THOMSON became the main supplier in Europe for these vertical loading CD players from HITACHI. THOMSON owned by this time several french and german brands, so the HITACHI vertical cd player was sold under at least 7 different brand names, including a THOMSON rebadge as well. These are the THOMSON distributed HITACHI vertical cd players:

THOMSON AD 100

cd player


BRANDT DAD-001

cd player

CONTINENTAL EDISON DAD-9370

cd player

DUAL CD 120

cd player

NORDMENDE Audio Digital System 2000

cd player

PATHE MARCONI PMLA10

cd player

SABA CDP-380

cd player

Continue reading: Part 2   Part 3   More CD