(1982) Stereo cassette deck, Dolby B HX Pro NR, Datalink
Type numbers: 4841, 4842, 4843, 4844, 4845, 4846, 4847
The second generation of this series of tape recorders, replacing Beocord 8000, introduced a new type of recording system which B&O would later licence to other manufacturers all over the world. Text copyright © Beocentral. Unauthorised reproduction prohibited.
The HX Pro (Headroom eXtension) system worked by adjusting the depth of the bias current during recording, so that when a strong signal was recorded, the bias level favoured a wide frequency range, and when a weaker signal was recorded low background noise was the priority. The improvement in performance was certainly worthwhile, and all types of tapes and recordings benefited from the process. In particular it enabled really good recordings to be made of ferric tape, useful for making cassettes for the car players of the day, few of which offered the correct equalisation for chrome. Text copyright © Beocentral. Unauthorised reproduction prohibited.
Another addition was that Metal particle tapes could be used. Since the standard for the sensing hole had not yet been fully agreed by all the cassette makers, both automatic and manual means of selecting the Metal position were fitted. Text copyright © Beocentral. Unauthorised reproduction prohibited.