Modeerf, I was very unsure you meant this in your other thread.
The insert loop of the Voyager is located between the mixer output and the filter input. What happens with your set up? (I suppose the connections are ok here) When you press a key, the VCA/VCF envelopes are triggered, i.e. open to let the signal through.
When no insert cable is inserted, the said signal is the output of the mixer consisting in the oscillators + external input + noise. But you have to be aware that the oscillators, noise generator and possibliy the external input are permanently running; you can hear them when you press a key only
because you open the envelope by pressing a key.
When an insert cable is inserted, the mixer output is sent in the MF-104 or whatever you connected, permanently. That is: if you monitor the signal going out from the MF-104, you'll hear the oscillators droning and echoing. Then when you press a key, that's precisely what you let through.
Setting the VCA on ON rather than KEYBOARD won't help: everything is still free running in to your MF-104.
As a consequence, don't expect to hear any echo after you released a key unless the envelopes (VCA and VCF) have loooong release. Globally, what this is likely to produce (
I don't have a Voyager [yet
] ) is echoes only while you are playing a note, or a delayed superposition of oscillators and noise drones.