DIY tape echo - improvements!

Improvements!
• Tape tension arm! Adjusting the tape tension is crucial, and having an arm with a large wingnut helps a lot. Highly recommended for all tape looping experiments.
• Running the TA7668 from batteries made it a lot quieter.
• Added stereo-mono and ground lift switches the to right extra head.
• Even though the Nagra records all over the tape, tape height / azimuth can always be better.
• Running the tape head amp through an external mixer means you can pan and adjust individual feedbacks via FX-send from three channels = more fun!
The tape head adapter is a small board with a TA7668 on it.
www.alldatashe...
These boards can be bought all over... here's an example (no affiliation)
www.amazon.se/...
Initial demonstration:
• DIY Tape Echo - Nagra ...

[@adehanft]

Love it. Sounds great and the explanation is really helpful for understanding how this works.

[@jacobsteel]

@@adehanft thank you very much! 🙏

[@SISKworks]

Very nice. Sounds amazing. That arm and sewing machine bobbins seem weirdly familiar to me for some reason ;-)

[@jacobsteel]

@@SISKworks hahaha! yes thank YOU for inspiring work! 🙏🙌 the arm solved the problem with getting the perfect tension for an even loop and getting it to stay there.
I first bought bobbins trying to wind coils for a DIY ebow,
th-cam.com/users/shortsSa1TaJXJCz0
(I made some detection coils and wound them in shrink tube, had bobbins left... )

[@AISynthesis]

What is the extra head you are using?

[@jacobsteel]

@@AISynthesis - one stereo head (unknown source, flea market find), one mono (Lyrec, gift)

[@jacobsteel]

@@AISynthesis ~ but as the Nagra records full width, many heads (even cassette player heads) work