Quote:
Originally Posted by Restoration73
The reason for the moving heads is the two coils on each erase and bias head are always in circuit in series, i.e. no switching is involved.
For mono use the unwanted pole is moved out of the tape path.
Same used on the Akai X2000 reel/8-track/cassette deck,
unusual machine with the one motor driving everything !
The crossfield bias system was patented by Tandberg and licenced to Akai.
|
Given the comparative complexity of this mechanical arrangement, wouldn't it have been a whole lot cheaper (and less fault and wear prone) to instead have used a bit of extra switching (relay?) and a "dummy"-head inductor to achieve the objective electronically? The bias head would, of course, still have needed to be moved horizontally away from the R/P head to allow tape threading, but surely less faff than all that faffing around with bound-to-wear cams and metal steps?
Mike