Showing posts with label JVC. Show all posts
Showing posts with label JVC. Show all posts

22 January 2022

JVC F1 Series (1995) - Super Digifine Mini

mini hifi

The F1 Series were a Super Mini System featuring high quality components that measured only 245 mm wide. They were available as JVC components worldwide while the Japanese domestic models were sold under the Victor brand name. The JVC branded models had yellow/red displays while the Victor branded models were available with yellow/red, but also blue/red displays. The components are: AX-F1GD 50W/ch (DIN 4 ohm) amplifier | FX-F1RGD RDS Tuner/timer with 40 presets | XL-F1GD 1-Bit cd player with optical out | TD-F1GD Full Logic controlled Auto-reverse cassette deck featuring a 3 motor "Silent Mechanism", Dolby B,C,HX-Pro | XM-F1GD MiniDisc recorder with optical in-out. The whole system can be remote controlled with the remote of the amplifier that controls the other components via JVC's Compu Link Remote System.

There were two loudspeaker sets available for this system. The SX-F1WD is a compact 2-way closed system featuring a 16 cm bass and 2,5 cm tweeter. The SX-A103WD is a more compact and more sophisticated loudspeaker. It features a 12 cm woofer designed in Germany by Kurt Muller and a 1,9 cm tweeter. They are both mounted on a 5 mm thick aluminium front panel in a bass-reflex enclosure.

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi




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


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)

25 April 2020

JVC SD1 Series / Victor HMV (1996) - His Masters Voice

mini hifi


This must be the most sophisticated compact system ever. The Super DIGIFINE SD1 Series was introduced in Europe in 1996. All the components feature a 3.5 mm one piece aluminium front-top panel and a 3.2 mm thick steel bottom plate. The components of this system are:
AX-SD1GD - Stereo Super-A amplifier, 70 W/ch (4 ohm 1 kHz DIN), dual transformer contruction, Compu Link System remote
XL-SD1GD - 1-Bit P.E.M. D-A converter CD player, optical and coaxial output. Dedicated remote
FX-SD1GD - RDS tuner with 40 presets, built in MPX filter
TD-SD1GD - 3 Head (Fine Amorphous) Direct Drive Closed Loop Dual Capstan cassette deck with Dolby B,C and HX Pro, Dedicated remote
SX-SD1WD - Compact 2 way bass reflex loudspeaker, Brass die-cast front panel and solid wood enclosure, Magnetically shielded 13.5 cm bass-mid with Alnico-Magnet designed by loudspeaker expert Dr. Kurt Müller, 2 cm soft dome tweeter, 55-30,000 Hz
All components are 360 mm wide and 129 mm high with depth between 317 and 337 mm. 

The same system was sold in Japan under the Victor brand name and the system was simply called HMV (His Masters Voice). The model names were also different: AX-V1 amplifier, XL-V1-N cd player, TD-V1-N cassette deck and SX-V1A-M compact loudspeaker. Additionally there was available the SX-V7-M floorstander loudspeaker, QL-V1-M Quartz Direct Drive turntable and a later introduced and very rare MD-recorder the XM-V1-N.

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

mini hifi

10 July 2019

JVC DD-V9 (1983) - Closer To The Musical Truth

cassette deck

Superior performance specifications, Special convenience features, Superb sound quality, this is the JVC DD-V9 (Victor DD-V9 in Japan) 3 Head Auto-Reverse cassette deck introduced in 1983. The JVC DD-V9 is the ultimate in convenience and precision - convenience because it records and plays both sides of a tape automatically, and precision because it has three heads. JVC's auto-reverse swivel head features a jewel-lock system (ruby-tipped azimuth adjustment screw) that makes possible to adjust the head alignment for each path of tape travel independently. The three-head design consists of a SA (Sen-Alloy) recording head and a Metaperm playback head, hyperbolically curved for extended bass. During forward play and record, the DD-V9 use a capstan directly driven by compact Pulse Servo motors designed and built by JVC at their own plant. 

The Pulse Servo motor used incorporates a significant amount of technology originally developped for JVC turntables. Technically the motor can be described as a "4-phase, 8-pole, brushless & coreless FG direct-drive motor" The JVC computerized B.E.S.T. (Bias, Equalization, Sensitivity of Tape) tuning system analyzes the electromagnetic properties of any tape and adjusts the deck's electronics for a perfect match - all in about 15 seconds. The fluorescent display will show you remaining tape time in minutes and seconds and various Music Scan modes. The two-colour fluorescent level meters are accurate, easy to read and highly responsive. Each of the bars for the left and right channels consists of 18 segments, and in turn each segment is formed of 20 matrix dots. Less frequently used controls are located on a slide-in/out panel for easier operation and cleaner lines while the optional R-70E wired remote control adds to the list of comfort features.


cassette deck

cassette deck

cassette deck

cassette deck


cassette deck

cassette deck

10 February 2019

JVC DD-99 (1982) - Another Step Closer to Reality

cassette deck

When introduced in 1982 the JVC (Victor in Japan) DD-99 promised open reel sound quality with cassette convenience. To achieve this the DD-99 combines such high-technology JVC innovations as a Quartz-Lock, direct-drive Pulse Servo Motor with two new twists: a Double Servo and Multiplied Bridge Drive. Add them to a three-head design using an X-cut SA combination Rec/Play head and the B.E.S.T. tuning system, and you get peerless performance. The Quartz-Lock, direct-drive Pulse Servo Motor improves speed accuracy. Using a low-rpm direct-drive motor, the highly accurate tape transport of the DD-99 is simplicity itself. The coreless design completely eliminates jerky motion called "cogging" while speed accuracy is provided by means of a quartz-referred Double-Servo circuit, together with new "Multiplied Bridge Drive". 

The B.E.S.T. tuning system automatically compensates for any differences in Bias, Equalization and Sensitivity for flat response (from 40 to 12,500Hz +/-1dB) from any tape. It's done by means of a built-in computer and takes only about 30 seconds. Three heads - JVC's exclusive X-cut SA combination Rec/Play head (two heads in one housing), and two-gap SA Erase head - provide two very important benefits. One, it allows you to monitor your recordings as they're being made, and two, it means every head is provided with an optimum gap width - no compromises. The clearly discernible X-shaped core of the playback head eliminates the so-called contour effect, assuring smoother overall response. 

The two motor full-logic control tape transport features a tension stabilizing loop. The supply reel is connected to the takeup reel by means of a belt which supplies the proper hold-back tension throughout play or recording. It's an electrical system, no mechanical friction is emplyed to create tension. Therefore, tension is always uniform, and stability will not deteriorate with the passage od time.


cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck