chebby:I sold a few of those Grundig music-centres in my time as a part-time hi-fi sales person. (Back in the late 70's when I was an A'Level student.)
I think the JVC you are asking about (and also the Grundig) used to have globe shaped speaker enclosures on stands. Very 'Jason King'!
Dunno, my dad is on about the thing my grandad had and he had some Wharfedale E50s and E30s to go with it. Apparently it was the best "music center" you could buy - it had a 2x50watt amplifier built in and capability for two sets of speakers and you could overdub yourself onto tapes. Although now he says it may have been a "Sharp" system! I want to buy him one for christmas, but if I can't find which model it was or a pic or anything I can't.