Help with a rumble filter project (1 Viewer)

[Marcelo T]

Hi,
I’m looking for a project of a rumble filter, to cut frequencies below 16hz. I have a SVS CS+ and I had some bottoming problem with a couple of DVDs. The filter would be placed between the receiver and the Sansom amp. I have someone that can built it for me, but he doesn’t know how to calculate the components values.

Thanx.

 

[Greg Monfort]

If 3rd order Butterworth is acceptable, then use the high pass portion of this calculator
http://home.new.rr.com/trumpetb/audio/009js.html, and of course you still need a power supply.
There's a much more flexible designer here http://www.chipcenter.com/oltu/afw/, but unfortunately is down for 'upgrades'. :frowning:
GM

 

[Isaac C]

Texas Instruments has some utilities for designing active filters. Filter Pro lets you design Multiple Feedback Filters or Sallen-Key filters based on crossover frequency and filter order -- easy You can specify up to a 10th-order Butterworth/Bessel/Chebychev filter and the program spits out component values -- exact or off the shelf values. The rest: power supply, printed circuit board etc. is left as an excercise to the user.
hth
Isaac

 

[Brian Fellmeth]

You might try plugging the port as a "quick and dirty" solution when playing bassy track loud.

 

[Marcelo T]

Thanx for the help guys