MagnetoSound

Re: Help on Neve HPF
« Reply #20 on: January 12, 2011, 09:21:01 AM »
HPF on Igor's schematic is just to the right of r11/12, no?

Uh, you're right, there it is in black and white. I have seen many similar fixed examples, though I always wonder how predictable it can be in effect given variable source impedance ...

I guess if you assume 200 ohms you can just get on with it and let it do what it does. HPF is usually pretty much try-it-and-see-what-happens in use anyway, no?

Dan

I don't think people realize what an embarrassment of riches this place is   -  Paul Gold


SaMpLeGoD

Re: Help on Neve HPF
« Reply #21 on: January 16, 2012, 07:28:33 PM »
Is this correct?? I would like to fit a Switchable HPF on this design! Can anyone help???



I saw on the Neve's 1073 Block design using BA182/C there's a lor of 4M7 resistors between the BA182 legs...
Sorry the newbie question, but I just far away to understand filter's design :S

What B- means here? negative voltage? I have no negative rail on the EZ1290 design :(
Thanks a lot for the help!

Eddie
Keep on Rockin' and DIYing!!!!

MagnetoSound

Re: Help on Neve HPF
« Reply #22 on: January 17, 2012, 05:00:45 AM »

No, you need to insert the filter between pad P and the blue wire.

In the case of a single positive supply rail, B- means GROUND. You need to ground this point or the shunt won't shunt.

The resistors help to minimise pops when switching.

Dan

I don't think people realize what an embarrassment of riches this place is   -  Paul Gold

SaMpLeGoD

Re: Help on Neve HPF
« Reply #23 on: January 17, 2012, 09:40:25 AM »

No, you need to insert the filter between pad P and the blue wire.

In the case of a single positive supply rail, B- means GROUND. You need to ground this point or the shunt won't shunt.

The resistors help to minimise pops when switching.

Really thanks Magneto!
Cheers!!
Keep on Rockin' and DIYing!!!!

pstcho

Re: Help on Neve HPF
« Reply #24 on: April 08, 2020, 07:55:26 AM »
good morning guys, exactly the topic i was searching for :)

do you think it could work to incorporate the  Pultec filter board at this exact same spot (  between pad P and the blue wire ) ?

Would it make any impedance issue, we sounding stuff ?? deteriorating the effect of the preamp ?

Sorry for the stupid question, im not very educated in electronics

Thanks


 

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