brendandwyer
New member
THis is kind of directed to Ethan but anyone can feel free to jump in. The pads on my bellari preamp are noisy. Don't know why but if i pad a source i get much unwanted garbage.
That being said i'd like to build some mic attenuators. I've read ethan's page on his site on the pad circuit and it looks like something i can handle. I did try to download the resistance calculator program but the link was inoperative. There was mention of the consoles impedence rating. I'm quite new to electronics but like i said, this seems within my grasp so i think i'll have a go. Any advice or explanation on the calculations for resistance values would be appreciated.
edit: I've investigated the input impedance of the Bellari Rp220 and it says 600 ohm lo-z which is what i'm after. So i will post my calculations and hopefully someone can check them.
Edit2: so i came up with an R2 value 46.86537
hahahah, WHAT?
That being said i'd like to build some mic attenuators. I've read ethan's page on his site on the pad circuit and it looks like something i can handle. I did try to download the resistance calculator program but the link was inoperative. There was mention of the consoles impedence rating. I'm quite new to electronics but like i said, this seems within my grasp so i think i'll have a go. Any advice or explanation on the calculations for resistance values would be appreciated.
edit: I've investigated the input impedance of the Bellari Rp220 and it says 600 ohm lo-z which is what i'm after. So i will post my calculations and hopefully someone can check them.
Edit2: so i came up with an R2 value 46.86537
hahahah, WHAT?
Last edited: