• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Feedback in IT coupled amps?

Status
Not open for further replies.
Good afternoon

I´m working on a bass guitar amp with a PPP 807 AB2 output stage.
The best way to deliver current to the grids seems to be through an coupling transformer, and I have one that should work fine here. (It is actually an OPT from an old Philips amp, but the windings are suitable for use as 2,5:1 PP-PP IT.)

My concern is: What happens when the feedback spans across two transformers instead of just one (the OPT)
I guess phase shifts and such will be a problem.
Any ways do predict/deal with this?
 
Status
Not open for further replies.