Anyone know the values for the capacitors I need to buy to make bass blockers? I am looking for like a 120 Mhz HPF for my front speakers. I dont remember this stuff, its been so long since I have messed with audio.


Thanks

 

they carry those at best buy and circuit city if im not mistaken...

 

Yes, but all they are, are a few capicators/resistors in a little box.. they charge probably $50 for them, and its maybe $5 worth of parts you can get from radio shack..

But sorry m, I dont know.. lookup some audiophile websites

 

ohhh shucks.. guess ya learn something new every day

 

Capacitance = 1 over [2(pi)(final cutoff frequency)(impedance of circuit)]

Inductance = inverse of above

 

resistor, cap, cap, resistor, ground. Put inductors between each component to ground.

EDIT: I mean... the inductors go parellel to ground.

Man, I'm jet lagged. But I just can't get to sleep.

 

Turns out a friend of mine had some sitting at home and gave them to me.

If anyone cares the values I used are 100uF, 100V they do the trick quite nicely

 

Make sure they are non-polarized caps.. If you just are using caps in series, you aren't making a very fast rolloff filter, one component in series is only a 3dB (or 6dB, I don't remember) rolloff. That just means that you're not blocking as much of the lower freq energy as you would with a higher rolloff filter..