12 December 2021

Victor Series-1000 (1975) - The Laboratory Standard

power amplifier

The Laboratory 1000 Series was introduced by Victor (JVC Japan) in 1975. This series was specifically developed by Victor Lab Center for commercial use such as studios. Each component was carefully selected, only high reliability parts were used. The heart of the Laboratory 1000 System is the JM-S1000 stereo power amplifier featuring a large toroidal transformer, large 47,000 μF x 2 capacitors and 6 transistors per channel are used in a push-pull circuit. Large PEAK-VU meters dominate the front panel with separate left-right level adjustment while secondary functions are located behind a flip-down panel. In September 1970, JVC successfully developed the CD-4 Discrete 4-Channel Record for the first time in the world. Ever since that time JVC has been devoting itself to improvement of the system and as a consequence the partnering pre-amplifier of the Laboratory 1000 series is a 4-channel pre-amplifier, the JP-V1000. In order to fully benefit form a CD-4 Discrete 4-Channel source the Laboratory 1000 Sytem also contains the necessary CD-4 demodulator, the CD4-1000. Technical data JM-S1000: 180W/ch 8ohm 20Hz-20kHz, Bridged mono 540W 8ohm | THD 0.08% | Dimensions 478x212x488 mm | Weight: 30.5kg | Original sales price aprox. 7200 DM. 

power amplifier
JM-S1000

power amplifier
JM-S1000

power amplifier
JM-S1000

pre-amplifier
JP-V1000

pre-amplifier
JP-V1000

cd4 demodulator
CD4-1000

amplifier
Victor Laboratory 1000


05 December 2021

PIONEER Pure Malt Series - Limited Edition since 1998

Loudspeaker

Available since 1998, Pure Malt speakers have gained worldwide recognition as leading example of Pioneer's recycling efforts. In the "Resource Recycling Technology & System Awards" presented by the Clean Japan Center and supported by the METI (Ministry of Economy, Trade and Industry), the Pure Malt speaker series won the "Clean Japan Center Chairman's Award" in 2009. Pure Malt speakers were developed in collaboration with brewing and distilling company Suntory Holdings limited, which was seeking a way to recycle casks (made from virgin white oak) that were being used for fuels and other purposes after fulfilling their mission of aging whisky. Oak trees grow for 100 years before serving as whisky casks for another 50 to 70 years. After that the wood is recycled into speaker cabinets that produce warm, rich sounds for many more years. 

The first loudspeaker of the Pure Malt series was the S-PM1000, introduced on September 17, 1998 and it was limited to 1,000 sets. The Pure Malt speakers are more than just eco-speakers made from white oak (one of the world's hardest woods, used for the original Santory barrels) they also feature a newly-designed silk soft dome tweeter and composite cone woofer. A set of matching electronics with Pure Malt design elements and limited to 500 units, were introduced in 1999. These were the A-D5A-PM amplifier (60W + 60W 8Ω, 20Hz-20kHz, 0.05%) and the PD-HL5-PM Hi-bit Legato Link CD player. The Pure Malt series continued in 2000 with the introduction of the S-PM2000 loudspeaker, in 2005 it was introduced the S-A4SPT-PM loudspeaker, in 2006 they were followed by the S-A4SPT-VP (TAD) loudspeaker the S-PM300 loudspeaker and the B-PM1000 rack. The last models were introduced in 2016, these are the S-PM50 and S-PM30 Vertical Twin loudspeakers.

Loudspeaker
S-PM1000

hifi system

Loudspeaker
S-PM2000

Loudspeaker
S-PM300

Loudspeaker
S-PM50


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)