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Calibration | V2 Preamp Controller
I have had an LDR3x.V2.1 Passive Preamp Controller for 5 years
but I have concerns about imbalance.
who knows the procedure to make a “recalibration” with the resistances?
The procedure to start calibration with the V2 model preamp controller is to press the Center button on the remote while the controller is turned off. The LDR number will be shown on the left 2-digit display while the calibration step number will be shown on the right 2-digit display. Calibration will still work even if you don’t have a display but it’s very difficult to tell what’s happening. If the channel imbalance is due to an LDR having drifted then running calibration should correct this. If the calibration process does not complete (gets stuck part way through) that’s an indication one of the LDRs needs to be replaced.
Thank you for your reply !
but I misspoke.
indeed I had a faulty ldr, I changed it.
I was talking about pre-calibration!
on the site there was a module to position in place of the ldr to do this.
but where to find it? or is there a procedure?
yes i understand the question.
well, i have two v2.1 xlr cards.
I tested a transistor preamp, and I don’t have “this imbalance” that I have with the LDR preamp.
for example I have to do +4 on the right.
not with the transsistor preamp.
the voices are centered, but I have the impression of an imbalance with the instruments, which seem to me only on one side!
I changed 4 ldr to be sure.
and of course I recalibrated each time, testing by plugging the outputs, unplugging, ect …… 10 / 20 / 30 /40 /50 impedance.
so can there be a difference between the two cards?
but I’m ready to send it to you for verification!
hello, and thank you for your help.
well as I have this imbalance, it persuades me that there is a problem.
therefore, I am not serene.
so if you want to give me procedure? I only have a display.
I think it’s better to have two displays?
I can test, and if I can’t, then will you send back the two cards only?