The 6000 Stereo Model
Unlike the 5001 model, the 6000 stereo music center
tape run of 22 minutes, providing 29.7 hours of recording
81-track tape recorder
stereo versions of the Schaub-Lorenz Music center (6000 model) had an 81-track tape (9 sectors x 9
tracks), not 126 tracks as you might expect. This is because stereo models needed
two tracks - and therefore
two recording heads instead of the normal one - in order to magnetically record the two
stereo channels parallel to one another on the tape.
However, this 81-track stereo tape recorder unit only offered a total playing time of 29.7 hours,
far fewer than the standard 5001 (mono) model. The actual number of tracks used to record in stereo
required the tape to be wide enough to hold 162 parallel tracks on the 10 cm wide (broadband)
Photo: Schaub-Lorenz Music Center 6000 stereo chassis
Erfurt, Germany, May 2008
Track-selection dial for the 6000 chassis
The photo above clearly shows that the track-selection dial contains
nine sectors (A to J, missing out the letter 'I'), with each sector split into nine subsectors,
giving a total of 81 tracks.
6000 model aimed at US export
The 6000 stereo version of the 5001 music center was intended for the
US market, and was fitted with a 110 V power pack unit, and was advertised as the
Stereo Tape Recorder 6000.
These chassis were sold without a cabinet, a stereo (radio) receiver
or a stereo amplifier. General
Electric in the United States bought a batch of these
6000 stereo chassis, installed their own stereo receivers and stereo amplifiers, built their own
cabinets and sold the resulting stereo music centers to the American consumer.
Some of the 6000 stereo chassis ended up (back) in the UK and the
Netherlands, and were bought by radio and electronics enthusiasts who either built them from a kit
and a set of instructions, or bought them as a ready-made stereo chassis. However, neither were
sold with a cabinet, a stereo tuner or a stereo amplifier; these all had to be purchased separately
or installed by the radio enthusiast himself.
A company called Radio-Service 'Twente'
NV, based in Goenewegje 14, The Hague, was selling
these stereo chassis and spare parts by mid-1969.