Passive line level filters

[beppe2672]

Hi, just wondering if anyone has any experience building passive line level filters? Basically I need a -3db low pass shelf at 15khz. Can anyone point me in the right direction?

 

[PRR]

You want to know the impedances source and load.

I have no idea why a 15kHz low-pass should be a "shelf".

 

[planet10]

Not sure what you really need, but here are a couple examples:

TLS.org | Passive Line-Level Crossover
Passive Line Level Baffle Diffraction Step Compensation

A BSC filter adds a shelf that effectively decreases everything above the baffle step.

dave

 

[beppe2672]

Cheers, that was what I was looking for.