This is on recording sound on sound by disabling the erase head. (See previous today's posts).
Would DC bias be more effective in affecting what has already been recorded less?
To give some perhaps relevant figures...
Refering to a typical 70's JVC cassette recorder's service manual. JVC NIVICO 9425LS.
Erase DC current is 7mA!
Record head AC bias current is 900μA.
Recording current at 1KHz is 60μA.
Would a DC bias current of the order of 60μA do the trick?
How would a Pleiades V6 battery powered electron tube amplifier operating in this or larger current area sound like with the low voltage anode connected directly to the head on a reel to reel tape transport? Ie connecting the recording head instead of the output transformer? Of course more than one amplifying stage should be needed from mic level to magnetic tape.
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