tuned feedback question

[noPALE]

Hello,
I’m trying to understand what’s going on in the Tuned Feedback section of the Sequential Pro 3.
The Pro 3 manual describes it as a tunable delay line and gives the Amount/Tuning parameters, but doesn’t go into much detail.
I’m asking because I’d like to reproduce a similar type of tuned/resonating feedback using the Erica Synths Razornator. Has anyone experimented with this?
In particular, I’m wondering which Razornator parameters would get closest to the Pro 3 behaviour — resonator tuning, feedback/decay, damping/filtering, envelope-following amount, etc.
Any insight into what makes the Pro 3 feedback sound the way it does would be greatly appreciated!