Showing posts with label NORDMENDE. Show all posts
Showing posts with label NORDMENDE. Show all posts

06 February 2016

Quadraphonic - Surround Sound Amplifiers


Quadraphonic is a forgotten Surround Sound system from the early 1970s.
This system used four channels with speakers positioned at the four corners of the listening room. It was never a huge success because of the expensive equipment, conflicting formats and available albums. True, four separate channels, were used in the UD-4, CD-4, Quad-08 and Q4 systems. A different approach was the encoded system where the four channels were converted (encoded) in two channels (usually a vinyl LP) These records were decoded with a decoder in four channels. Some of the formats were the Matrix H, EV-4, and the completely different SQ and QS.

Here are some examples of quadraphonic amplifiers and decoders made in the early 1970s.

AKAI AS-980 quadro receiver (SQ, RM, CD-4)
AKAI GX-280D SS 4-channel tape deck (1973)
akai quadro

BLAUPUNKT Delta 6011 V quadro receiver (SQ-decoder) (1974)
blaupunkt quadro

Victor (JVC) Ssystem 105 - stereo / quadro components
jvc quadro

JVC 4VR-5456X quadro receiver (1977)
JVC MCA-V9 quadro amplifier
jvc quadro

Victor (JVC) MCA-V9 quadro amplifier
JVC 4VR-5426X quadro reeceiver (CD-4) (1977)
jvc quadro

JVC 4VN-990 quadro amplifier (SQ Matrix) (1977)
JVC JA-X9 quadro amplifier (CD-4, Matrix) (1977)
jvc quadro

LOEWE QR 320 quadro receiver (1975)
LOEWE QV 300, QV 310 quadro amplifier
loewe quadro

marantz Model 4400 quadro receiver (1973)
marantz Model 4060 quadro aplifier, Model 4415 quadro receiver
marantz quadro

PIONEER QC-80 QM-80 and QA-80 quadro amplifiers (1971)
PIONEER quadro system
pioneer quadro

PIONEER QX-8000, QL-600, QT-6600, QC-800A, QM-800A, 
QA-800A, QL-800A, QD-240 quadro components
pioneer quadro

PIONEER QL-60 quadro amplifier
PIONEER QX-80 quadro receiver
pioneer quadro
Sansui QRX-3000, QRX-3500 quadro receivers (SQ Matrix) (1973)
sansui quadro

Sansui QS-1, QS-100 quadro amplifiers
sansui quadro

SONY SQD-2020 quadro decoder (SQ Matrix)
SONY SQR-6650 quadro receiver
SONY SQA-200 quadro decoder (SQ Matrix)
sony quadro

SONY SQD-2020 quadro decoder (SQ Matrix) (1973)
sony quadro

SABA HiFi-Studio 8200 quadro receiver (1974)
SABA HiFi-Studio 8280 quadro receiver (1975)
saba quadro

TELEFUNKEN TRX 2000 hifi qudro receiver (1978)
KENWOOD KR-8340 quadro receiver (1973)
telefunken kenwood quadro

NORDMENDE Quadronado QXL-160 quadro receiver (SQ, CD-4) (1974)
YAMAHA quadro system
nordmende yamaha quadro

Go back to STEREO.

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:


cd player

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

cd player


cd player

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

cd player


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:


cd player


cd player


cd player


cd player

NORDMENDE Audio Digital System 2000

cd player


cd player


cd player

Continue reading: Part 2   Part 3   More CD