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Professional Recorder SP7 C

Professional Recorder SP7 C; Stellavox, Geneva (ID = 1712283) R-Player Professional Recorder SP7 C; Stellavox, Geneva (ID = 1712284) R-Player
Professional Recorder SP7 C; Stellavox, Geneva (ID = 1712285) R-Player Professional Recorder SP7 C; Stellavox, Geneva (ID = 1713481) R-Player
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Professional Recorder SP7 C; Stellavox, Geneva (ID = 1712283) R-Player
Stellavox, Geneva: Professional Recorder SP7 C [R-Player] ID = 1712283 930x439
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For model Professional Recorder SP7 C, Stellavox, Geneva
Country:  Switzerland
Manufacturer / Brand:  Stellavox, Geneva
Year: 1972 ? Category: Sound/Video Recorder and/or Player
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details Tape Recorder
Power type and voltage Batteries / addl. power jack / AA: 12 x 1.5 / 12-20 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 inch = 7.6 cm
Power out
from Model: Professional Recorder SP7 C - Stellavox, Geneva
Material Metal case
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 270 x 210 x 82 mm / 10.6 x 8.3 x 3.2 inch

Stellavox SP7 C is a Professional Tape Recorder using magnetic tape of ¼” width. It supports reels of 5” of diameter (10” ¼ of diameter with the accessory ABR).

Recorder SP7 is a modular recorder where electronic modules and head block can be easily changed. Mono and stereo recorders can be made with the same basic structure. Frequency response is flat (± 2 dB between 30 Hz and 16 kHz). Some versions have a better upper frequency response (Stellamaster SM7 reaches 28 kHz). Mono versions have a S/N of 70 dB. Recorder SP7 is within a case made of a machined block of aluminum. This recorder was an alternative to Nagra tape recorders; in a smaller shape and with an equivalent state of art mechanics and electronics. SP7 have 4 tape speeds (ranging from 9,5 cm/s to 76 cm/s),  extremely well controlled by an electronic servo system. The recorder uses an interchangeable head block where heads and biasing control circuitry is mounted. The head block presented in the pictures is optimized for the tape speed of 19 cm/s. Power supply: APS75

Price as of 1977 without head block assembly.

The SP7 was superseded with the improved model SP8 in 1977.

Das portable Tonbandgerät Stellavox SP7 C basiert auf dem 1969 vorgestellten Grundmodell SP7. Durch auswechselbare Kopfträger für monophone (optional mit Neo-Pilotton für filmtonsynchrone Aufnahmen) oder Stereo-Aufnahmen einsetzbar. Der Verstärkerteil ist zweikanalig ausgeführt. Die Elektronik ist grösstenteils in auswechselbaren Steckmodulen enthalten. Die Entzerrung und Vormagnetisierung wird im Kopfträger eingestellt. Aussteuerungskontrolle kanalgetrennt mit Doppel-Modulometer. Spulengrösse max. 13 cm, mit dem Zubehör ABR (375,-DM) lassen sich 10" Spulen verwenden.

Stromversorgungsgerät für Netzbetrieb: APS75

Neupreis Stand 1977 für das Grundgerät ohne Kopfträger.

Die SP7 wurde im Jahr 1977 durch die verbesserte Ausführung SP8 abgelöst.

Net weight (2.2 lb = 1 kg) 3.4 kg / 7 lb 7.8 oz (7.489 lb)
Price in first year of sale 5'400.00 DM

Model page created by Moisés Piedade. See "Data change" for further contributors.

All listed radios etc. from Stellavox, Geneva
Here you find 9 models, 8 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.