[sdiy] Echolette Echo 400 / Dynacord EC-504:: Anyone have a varispeed mod figured out?

Kenny Balys kenny at beatkamp.com
Sat Sep 26 04:42:38 CEST 2020

Further info:

This echo machine has a 220V AC motor, not a DC motor.

What I think I might do is something like an AC light dimmer
triac thing. Like this:


The goal is to slow it down so that I can get longer delay times.

The 75, 150, 225, 300ms delay times doubled would be just awesome.

Hope this isn't OT. Thanks in advance for any input.

On 26.09.20 24:43 , Kenny Balys wrote:
> I am thinking about adding a varispeed control on my Echolette 400 tape delay.
> The partial schematics are available here: (look for Dynacord EC-504, its the
> same as Echo 400)
> http://peel.dk/Dynacord/index.html
> The details of the motor control seem to be missing.
> Has anyone done this?
> If so, I would love to hear how you did it.
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