Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › add bass boost to opamp configured as buffer?
New Posts  All Forums:Forum Nav:

add bass boost to opamp configured as buffer?

post #1 of 2
8/29/05 at 2:24pm
Thread Starter 
Hi,
I was wondering it would be possible to do this. The amp in question is http://www.fa-schmidt.de/YAHA/, which I've already built. I'm using an OPA2132.

So from what I can understand, if I added the PPA style bass boost of a capacitor and resistor in parallel between the opamp's output and the -ve input, the opamp will function as a buffer except in the bass region, giving some voltage boost there?

Is there something I'm completely misunderstanding? Thanks!
Reply
post #2 of 2
8/29/05 at 8:39pm
No, that alone won't do. You will also need, at minimum, the resistor from the -ve input to ground (R3 on the PPA and M³) in order to achieve the bass gain (and thus the shelving function). You can use the bass boost calculators on the PPA and M³ web sites (use zero for the value of R4) to see what you need in terms of parts values to achieve the boost curve you want.
Reply
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › add bass boost to opamp configured as buffer?