This was a 2 head deck to start with. The original stereo Rec/Play head was replaced with two mono heads, mounted side by side. As this deck had dual Rec/Play switches it was easy to change so that Record now only activates record on the first head.
To avoid drilling holes in a nice old deck (it's all restorable) the extra controls were placed in a separate box hot glued to the front. Speed = motor speed. Feedback = the output of play amp 2/R fed back to record input if rec amp 1/L; via a small audio transformer (superior control). The first VU meter shows mike input to head 1, the second VU the play volume from head 2. Control Voltage (CV) via vactrols in parallel to potentiometers.
Pro: two heads gave much longer delay times than if done with a 3 head deck (cheaper too).
Con: cassettes will have to have the head opening modified slightly to accomodate 2 heads.
Here's a little bit more on how it was made with a picture of the cassette too.
• How to make a DIY tape...
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15 июн 2021
