Home Planar Speaker Asylum

Welcome! Need support, you got it. Or share your ideas and experiences.

[ Follow Ups ] Thread: [ Display  All  Email ] [ Planar Speaker Asylum ]
[ Alert Moderator ] [ Edit ] [ Delete ]

Re: resistor calculation

24.95.91.96

Let me double check some values.
r here is the input impedance of the amp, correct?
f is the crossover point: 600Hz for lowpass and 1600Hz for highpass (are these the correct values?)
c is the needed cap value.

So, the formulas simplify down to:


     1
c(lowpass) = -------------
    3768 * R(amp)

and


     1
c(highpass) = --------------
    10048 * R(amp)

With 100k input impedance these evaluate out to

c(lowpass) = 2.7E-9F = 2.7nF
c(highpass) = 9.9E-10F = 0.9nF

The value for the highpass doesn't seem too far off, but lowpass seems out of whack. I think I'm missing something here. One of my assumptions or calculations must be wrong, and after looking over it I can't figure it out. Any ideas what's going on?

Thanks for your patience.

Chia-Hao

This post is made possible by the generous support of people like you and our sponsors:
  Analog Engineering Associates  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]