More than Four? You Bet.
knightfly said:
... Tascam also made some 8 track cassette models, which ran at twice the normal cassette tape speed. One of them, I think it was the 388, had a pretty comprehensive built-in mixer - although, the 388 may have been their reel machine combined with a mixer, don't remember now....
Your latter guess is the right one -- the 388 was a 1/4" reel-to-reel 8 track with a built-in mixer.
In reel machines, Tascam made the 38, 48 and 58 (as well as the 80-8 and even a 70-8), as you mentioned, and also
the ATR60-8 and
the TSR8, which was the last one. All 1/2". Fostex also made several iterations of 8 track (A8, 80, R8, maybe others), most or all of which were 1/4" I believe,
Of course Tascam and Fostex -- not to mention Studer, Ampex, MCI, etc. etc. -- also made 16-tracks and 24-tracks as well. I believe there was even a 32-track or something at some point, but it may not have got very far.
As mentioned elsewhere in this thread (and others), Tascam and Yamaha made 8-track cassette decks. Vestax, if I remember correctly, had a
sixtrack deck ahead of them, though I'd be pretty stunned if there are many in existence. Incidentally, a cassette 8-track has
1/64th of an inch per track (8 times 8 is 64, right?), not 1/32nd.
Nobody ever had the nerve to try to put 16 tracks on a cassette.
Akai also made the MG1212 a long time ago, which was a sort of all-in-one recorder/mixer with 12 tracks on a proprietary tape cartridge (actually, I think it even had a 13th track for timecode).
And, lest we forget, ADATs and DAxxs are "tape decks," even though they're digital ones. They certainly have 8 tracks. There a variety of reel-to-reel digital tape decks, too, with up to 24 tracks (maybe more, though I don't know of any).
So ... yes, I think it's safe to say that the original poster's brother is not winning any awards for perspicacity with his "tape can't hold more than 4 tracks" notion.
I suppose if we take the theoretical maxima for analog recorders to be (i) 2" tape width (wider and you have mechanical problems) and (ii) 8 tracks on 1/8" like a cassette 8-track (more tracks and you have signal problems), it would be accurate to say that an analog tape deck can't hold more than 128 tracks.