Showing posts with label HITACHI. Show all posts
Showing posts with label HITACHI. Show all posts

16 January 2022

HITACHI CP-90/900 (1983) - The Super Transformer

boombox

This Hitachi Super Mini Component System was introduced in 1983. It was a modular concept that consisted of the CP-90S or CP-900S amplifier and the clip-on CP-90REX docking station for 4 removable components and the matching speakers. There were available two systems, the CP-90 and CP-900. The CP-90 had only 3 components in the docking station: tuner, cassette recorder and EQ with the empty space covered with a decorative element. The CP-900 had 4 components installed: cassette player, cassette recorder, tuner and EQ with the amplifier having different input configuration. The docking components are interchangeble which means one could have a system with 3 cassette players installed or change the position of the tuner and cassette player in the docking station. The detachable tuner/cassette components can be used as portable units with a headphone. The Dolby noise reduction system is housed inside the 5-band graphic equalizer unit. The amplifier section has a power rating of 12W/ch (THD 10%) delivered to a pair of easily detachable loudspeakers, each with a 9cm woofer and 2cm ceramic tweeter. To enhance bass response the amplifier has a switchable Super Bass Boost System. Additional components that could be used with the CP-90/900 were the HT-L55 turntable, A-300 AC adapter, HD-M3 headphones, UCM-300W microphones. Dimensions: 495x168x201 mm | Weight: 7.7 kg | Operation: AC/DC/ext. DC power supply. You can see this system featured in the dance sequence of the 1985 movie, White Nights. 

boombox

boombox

boombox

boombox

boombox

boombox

boombox

HITACHI CP-90/900 (1983)

HITACHI CP-90/900 (1983)

boombox



26 November 2021

Microcassette in Higher Fidelity - An (almost) Complete List

microcassette


microcassette

The microcassette was introduced by Olympus in 1969. The microcassette is significantly smaller than a Compact Cassette but it uses the same width of magnetic tape. Using thinner tape and a 2.4 cm/s standard speed you can have 30 minutes recording time per side, and double that duration at 1.2 cm/s. Unlike the Compact Cassette the tape spools in the opposite direction, from right to left and it is capstan drive just like Compact cassette.

Microcassettes proved to be popular for recording voice in dictation machines and answering machines. However, Microcassettes have also been used as a medium for recording music on Type IV metal tapes. This article presents some of the higher fidelity Microcassette decks that were manufactured for a short period of time in the early 80's.

microcassette
microcassette Capstan Drive

It has to be noted however that before microcassettes, PHILIPS intoduced the minicassette that was featured in the movie A Clockwork Orange but everybody mistakes them by the OLYMPUS microcassettes. They are very similar in size but the Philips minicassette system does not use a capstan for tape transport.

minicassette
A Clockwork Orange movie scene featuring PHILIPS minicassette !!


minicassette
A Clockwork Orange movie scene featuring PHILIPS minicassette !!

An (almost) complete list of Higher Fidelity microcassette recorders:

microcassette
SANYO RD-XM1 (1980)

microcassette
FISHER CRM 500 (1981) Sanyo rebadge



microcassette
JVC D-M3 (1981)

microcassette
Lo-D (Hitachi) D-MC5 (1982)

microcassette
SONY TC-MR2 (1982)

microcassette
Technics RS-M212 (1981)

microcassette
Technics RS-G800 (1982) Tuner-microcassette-amplifier

microcassette
AIWA 3-head, Dual Capstan, Prototype 1981

microcassette
PIONEER MT-C8 (1984)

13 June 2020

HITACHI SDT-900M (1980) - Video Presentation

Presenting the HITACHI SDT-900M (1980)

Full Description: here
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21 March 2020

HITACHI MD-5 (1983) - Revolution in Hi-Fi

mini hifi

Hitachi (Lo-D in Japan) was a leader in CD player technology (a revolution in Hi-Fi) and the DA-1000 was one of the first CD players, introduced in october 1982. Hitachi was also the most prolific OEM provider with this model. (See all the Hitachi based models here). All these first generation CD players from Philips, Sony and this Hitachi were compact units, the Hitachi measuring only 32 cm wide.

To complement this new product, Hitachi introduced in 1983 a dedicated set of mini Hi-Fi components, the MD-5 set. These were all visually matching components with electronic controlled components using a flat stainless steel keypad on all units.


HITACHI DA-1000 - Front loading first generation vertical CD player. One of the most rebadged first generation CD player.
HITACHI HA-MD5 - 60 W/ch Stereo amplifier, feather touch control, six preset tone controls
HITACHI FT-MD5 - Quartz Digital Synthesizer AM-FM Stereo tuner, 12 presets
HITACHI D-MD5 - 2-Head 1-Motor IC logic controlled cassette deck, Dolby B-C, Digital counter, music search
HITACHI HT-L5 - Linear tracking Quartz Unitorque Direct Drive turntable, T4P cartridge system
HITACHI HS-20F - 2-way bass reflex loudspeaker, 20 cm metal flat cone, 3 cm flat cone tweeter
Unique Extra Component:
HITACHI D-MC50 - 2 motor IC Logic Controlled Stereo Microcassette recorder, Dolby B-C, Metal tape compatible, digital counter

mini hifi
DA-1000

mini hifi
FT-MD5

mini hifi
HA-MD5

mini hifi
D-MD5

mini hifi
D-MC50

mini hifi
HT-L5

mini hifi
HS-20F

mini hifi

26 April 2019

HITACHI D-5500 (1979) - The Deck with "Brain"

cassette deck

The HITACHI D-5500 was introduced in 1979 and it was one of those Super decks that was competing for supremacy. It was a sophisticated 2 motor deck featuring Hitachi's own Unitorque Direct Drive motor (0.028% WRMS wow and flutter) and their own "Close Gap" R&P heads in a 3 head configuration. The highlight of this deck was the ATRS (Automatic Tape Response System). The ATRS brain is a sophisticated microcomputer that's built into the Hitachi D-5500 Cassette Deck. Because there were hundreds of different tapes on the market, ATRS was designed to match bias and EQ settings to the precise characteristics of each one you use. Press the Test button while in record and in 20 seconds ATRS carries out six calibration functions. It also has three individual memories for the test results of the three tapes you use most frequently. For the ultimate in user comfort interface the Hitachi D-5500 features a full IC logic detachable control block that doubles as a wireless infrared remote unit. Soon after the release of the D-5500 it was introduced the D-5500M that added Metal tape compatibility. Both models were available in silver and black, the worldwide model was sold as HITACHI while the Japan domestic model was sold as Lo-D.


cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck




19 January 2017

PCM Adapter - Old Digital Audio Format

Before the introduction of a standardized format to record digital audio to a tape (the DAT recorder) the practice was  to use a PCM adapter (pulse code modulation) connected to a video recorder to record the digital audio signal to tape. The PCM adapter was connected to a video recorder using the video in/out of the unit in order to record the PCM coded audio digital signal where normally the video signal is recorded. The reason to do this was that a linear tape recorder did not have sufficient bandwidth to record large volumes of PCM data while video recorders were available both for studio and home use and the rotary video heads used in a video recorder had sufficient bandwidth to do this. Most video-based PCM adaptors record audio at 14 bits quantization, and a sampling frequency of 44.056 kHz.

pcm adapter
PCM connection diagram

First generation PCM adapter

pcm adapter
SONY PCM-1 1977

pcm adapter
Technics SH-P1 1979

pcm adapter
DIATONE PCM

pcm adapter
SHARP RX-1 VC-6300 1979

Commercial models

pcm adapter
Aurex XD-80 1981

pcm adapter
Aurex XD-60 1981 (right)

pcm adapter
DIATONE D-102 1982

pcm adapter
SONY PCM-F1 1981

pcm adapter
Technics SV-100

pcm adapter
SONY PCM-501 1984 / 553ESD 1985 / 701ES 1984

pcm adapter
Sanyo PLUS 5

pcm adapter
Sansui PC-X1 / PC-X11 1988

Dedicated audio players using VHS video tape

pcm adapter
Technics SV-P100

pcm adapter
HITACHI PCM-V300 1982

VCR with PCM audio

pcm adapter
Aurex TOSHIBA PCM-D1

pcm adapter
Aurex TOSHIBA PCM-D1

Prerecorded PCM audio on VHS tape

pcm adapter
Mobile Fidelity Sound Lab prerecorded PCM (digital) audio on VHS

More vintage audio @ www.1001hifi.com