In a message dated 9/23/2005 5:27:38 PM Eastern Daylight Time,
[log in to unmask] writes:
I had John French make me a 4-channel 8-track head assembly for my
"FrankenSony" pair of APR-5003V recorders that lets me play four
tracks simultaneously. The really neat thing about this head is that
I have infinite height adjustment without changing the head azimuth
or zenith, so I can tease out any track snippets as long as they are
at least 0.021 inches wide (or have adjacent silence totalling that
I've used a similar technique to recover the "center" track from some paper
based tapes that had been recorded on a Brush "Sound Mirror" then reused on a
two track machine.
It is very useful to be able to probe old tapes for hidden recordings or to
eliminate artifacts of badly aligned recorders.