Showing posts with label AUREX. Show all posts
Showing posts with label AUREX. Show all posts

04 September 2021

Aurex PC-4280 (1977) - 3-Head To Go

cassette deck

The Aurex (a Toshiba brand name for Japan) PC-4280 was a compact, portable cassette recorder introduced in 1977. The biggest feature of the PC-4280 is the use of a 3-Head System, a rare feature for a portable deck. This system consists of 3 independent (discrete) heads mounted on a rigid zinc die-cast head block. There is a hyperbolic AS (all-sendust) 1 micron playback head, a ferrite 5 micron recording head and a double gap ferrite erase head which doubles as a tape tensioner. The mechanism is using a high-precision 38 pulse FG servo controlled belt drive mechanism with mechanical tape control. A built-in 6kHz oscillator can be used for record head Azimuth adjustment and a 400Hz oscillator can be used for recording sensitivity adjustment. Settings can be visualized on the VU meters. The deck can be powered within a voltage range of 7-16 V with the help of a built-in DC-DC converter. A clip-on battery box and external 100V AC adapter were also available. Accesories included a shoulder strap and a dust cover that allowed activating the pause function with the lid closed. This portable recorder can be further expanded with the use of the MX-2480 6 channel mixer (microphones and line), the SS-4280W active 10W loudspeaker system or the MA-15 external "adres" noise reduction unit. Technical data: Frequency response: 20-18.000 Hz chrome | Signal to noise: 60dB | Wow and flutter: 0.07% (RMS) | Dimensions: 300x135x85 mm | Weight:  3.4 kg (without batteries) 

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck


24 January 2020

Aurex Micro System 15 (1978) - New Dimension in High Performance

Micro System 15


Toshiba's System 15 microcomponents were introduced in 1978. Aurex was Toshiba's brand name for the japanese market but these micro components were sold with both Toshiba or Aurex logo worldwide. With less than half the size of usual components they set new performance level, in the meantime being elegant in appearance. The components of the Micro System 15 are:

SC-M15 - power amplifier (DC) incorporating a large toroidal power transformer, 40 W/ch (20 to 20,000Hz, 8 ohms), THD: less than 0.02%, Frequency response: 0Hc (DC) to 70,000Hz, BTL use is possible
SY-C15 - preamplifier: Dual FET DC equalizer amp and DC tone amp, THD: less than 0.01%, Frequency response: 10Hz to 100,000Hz
ST-F15 - FM tuner: Digital frequency synthesizer with auto/manual tuning and 10 station presets, Synthesizer accuracy: 0.0025%
PC-D15 - two motor cassette deck with IC logic control, two heads, direct loading and Dual Capstan Drive, Wow & Flutter: less than 0.04%, Frequency response: 20Hz to 18,000Hz

All components are 257 mm wide with a one piece diecast aluminium chassis for the power amplifier while the other components feature one piece front and top panel with additional aluminum panel at the back (instead of steel) and sides. All components were available in silver or in a more rare black version. This basic setup could be expanded with the following components:

ST-S20 - FM, AM, LW and SW Digital Quartz Synthesizer tuner
AD-15 - adres adapter. Toshiba's own noise reduction system in a separate box as an alternative to the Dolby circuit of the cassette deck
AT-12 - programmable Digital Timer
RM-15 - wired remote (5 m) for the cassette deck
AR-15HU - mini rack
AR-15VU - large rack on casters that could accomodate a SR-F45 turntable
SS-S12 - mini loudspeakers
SS-930S - large loudspeakers


Micro System 15

Micro System 15

Micro System 15

Micro System 15

Micro System 15

Micro System 15

Micro System 15

Micro System 15

05 December 2017

7 Cassette Decks....Then They Were Vertical

akai
AKAI on the wall - 1974

When we say Cassette deck we normally think of a square box of a component that can be stacked one on each other. This was not however always the case. In the 70's some manufacturers tried a different approach by promoting vertical standing models that can be wall mounted or simply standing next to a tape recorder - like the big boys. Here is a selection of vertical standing cassette decks by various manufacturers.


akai gxc-510d 1974
AKAI GXC-510D 1974

aurex pc-6030 1976
Aurex (TOSHIBA) PC-6030 1976

denon dr750 1977
DENON DR750 1977

nakamichi 700 1973
Nakamichi 700 1973

PHILIPS N2521 1977
PHILIPS N2521 1977

teac a-860 1976
TEAC A-860 1976

tandberg TCD 330 1977
TANDBERG TCD 330 (right) 1977

For More Cassette Deck click here.

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

17 November 2015

CLASSIC minis - part 1


AIWA M-501 1981 
Shown units: RC-R300 remote control receiver, SA-C50 preamplifier, SA-P50 power amplifier,  MT-50 audio programtimer, ST-R50 stereo tuner, SD-L50 stereo cassette deck

AIWA M-501 1981
AIWA M-501 1981

AKAI UC-5 1980 
Shown units: SW-N5 loudspeaker, UC-F5 stereo cassette deck, UC-W5 power amplifier, UC-A5 preamplifier, UC -S5 stereo tuner, RC-5 remote control receiver

AKAI UC-5 1980
AKAI UC-5 1980 

Aurex / TOSHIBA system 15 1980
Shown units: SC-M15 power amplifier, SY-C15 preamplifier, ST-f15 stereo tuner, PC-D15 stereo cassette deck

Aurex / TOSHIBA system 15 1980
Aurex / TOSHIBA system 15 1980

MITSUBISHI  micro HiFi 1980
Shown units: M-P01 preamplifier, M-A01 power amplifier, M-F01 stereo tuner, M-T01 stereo cassette deck

MITSUBISHI  micro HiFi 1980
MITSUBISHI  micro HiFi 1980
PHILIPS mini 109 1980
Shown units: N 5581 stereo cassette deck, AH 109 T stereo tuner, 209 SA preamplifier, 309 PA power amplifier

PHILIPS mini 109 1980
PHILIPS mini 109 1980

TELEFUNKEN M 1 1981
Shown units: TELEFUNKEN MT 1 stereo tuner, MA 1 amplifier, MC 1 stereo cassette deck

TELEFUNKEN M 1 1981
TELEFUNKEN M 1 1981

WEGA MODUL 42 1978
Shown units: WEGA ADC-2 acoustic dimension controler, MODUL 42V amplifier, MODUL 42T stereo tuner, MODUL 42C stereo cassette deck, MODUL 42P turntable

WEGA MODUL 42 1978
WEGA MODUL 42 1978