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Old 22nd Mar 2023, 3:06 pm   #43
Restoration73
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Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
Default Re: AKAI M-9 Tape recorder/player.

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.
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