Re: cassette looping electronics help

[SoundFNR@aol.com]

> - to selectively disable the erase function when in record (doesn't have 
>to 
> be
>  per track, just universal)

difficult, because the same oscillator does the bias signal
for Record as does the erase.
So messing with erase might wreck the recording. 
Ideally a second erase head  positioned away from the tape,
and a switch to alternate between that and the original.
Either that or you need to try a resistor of "suitable value"
to act as a dummy erase head.


>  - to allow monitoring of playback while recording on the same track

don't think that's practical, you need a 3 head deck.

Have you tried using the erase head to play back ?
(well, guess not, sounds like you haven't reached for the
soldering iron yet)

However, if you're going to spend a lot of time and effort on this
wouldn't it be better to use a reel to reel deck?
much easier to work with
Plenty of room for adding extra playback heads.
(anything will do, even old cassette heads).
And often there's a choice of 3-4 speeds.


andy butler