Let's remember we have 48,5v Presonus
SE Electronics Z3300a
- Thread starter TornadoTed
- Start date
Help Support GroupDIY Audio Forum:
have you measured now?
Are JFETs left BIASed?
BIASing jFET can change the voltage after R5 and others
haven't done Jfet biasing yet... it's hard to do everything at the same time you know...
I intervened so much on this circuit...
Jfet D is now 15,68v and S is now 0,360v
are there biases left over from last time?
Jfet D is now 15,68v and S 0,360v
replace the 9.1v zener in series with D1 and D2, with another 8.2v
just tell me by comparison between orig and mod
I have everything in mind
I have everything in mind
I put Orig-mod aside as there's nothing more to do on it so its values are still the same (see pict.)
Attachments
Post everything compared between Orig and Mod
did the Phantom voltage drop in Presonus today?
please put a table with both microphones, I'm using my mobile phone, I'm tired, I can't analyze, only visually
I don't understand what you ask for : here you have a table with the 2 mics... ?
Orig-mod is the original mic / Mod is the one we're working on...
Orig-mod because it has been modified by changing the transformer...
values for MOD are better, close to my microphone
maybe, but I'm not going to operate on the Orig-mod
there is delay between read, translate, write, post
