Those things are HUGE! Scared to imagine how much they cost. Did you make much experiment with the input capacitor types?
You can use anything you like as long as you can make it fit. Although the Obligattos are HUGE they did fit.
Dont´t know where I should post in this thread with my problem, so I try here.
As soon as I turn the volume down in my B1, also the high frequencies getting damped.
I have to say that in the first place I installed the transsitors wrong with 180 degree. Now I installed them correct but the problem remains 😕
As soon as I turn the volume down in my B1, also the high frequencies getting damped.
I have to say that in the first place I installed the transsitors wrong with 180 degree. Now I installed them correct but the problem remains 😕
I am using a PCB which I found here
DIY Audio Projects Forum • Pass B1 buffer clone (be1) with layout - A weekend project.
DIY Audio Projects Forum • Pass B1 buffer clone (be1) with layout - A weekend project.
JFETs are symmetrical in construction so should have survived, but thats no guarantee.
Do you have access to an oscilloscope and signal generator to see if you have a bandwidth problem when the signal is attenuated.
Hmmm, I have my ears 😉
Also I do have Pink Noise generator from Logic as software and some software scope 🙂
Also I do have Pink Noise generator from Logic as software and some software scope 🙂
Thanks for your input 🙂
Yes pot is correct connected. If I dont put the pot but only the 1k resistor I also have the high frequencies damped 🙁
Yes pot is correct connected. If I dont put the pot but only the 1k resistor I also have the high frequencies damped 🙁
It does look as though you have managed to make a variable filter at the input to the B1. Try increasing the size of the input caps.