Is this very simple shematic correct ? (Should be easy, its passive)

[rockgardenlove]

So I'm sure this thing is wrong, but this dude on another forum insists it is correct.



Will that "high pass filter" actually act like a high pass filter?

Will that "low pass filter" actually act like a low pass filter?


And yeah.  I'm positive its wrong.

[jeroen_verbeeck]

The high-pass looks right, donno about the low-pass.
All those arrows make it look strange.

Look here for a better explanation. -> Klick Me
Scroll down about 1/3 of the page.

[jrem]

High pass looks okay, caps let high feq's though, prevent low freq's from passing.  You might need a resistor in series for the low pass to let the cap charge/discharge, which is what is going to prevent the lows from getting through, i.e., filter.

[Connoisseur of Distortion]

high pass is good, low pass is wrong.

the low pass filter control is done most easily by putting a cap to ground with a variable resistance in front of it, with regard to the signal flow.

think of the stupidly wonderful tone control. it uses a fixed resistance (the pot has the signal running through its outside lugs) and has a cap to ground off of the wiper. the result is that no matter where the pot is turned, the volume should remain constant. the treble content, however, will be either by lessened or almost intact depending on whether the resistance is before the filter or forming the filter.

a clever tone control, because you don't end up with the treble-changing volume pots and volume-changing treble pots of the fender system.

and so damn simple... 

[cd]

They're both low pass - cutting highs (letting lows PASS through).  The bottom one is probably in your guitar.  It's a Strat tone control.

Here's one correct way (replace resistor with variable resistor as necessary):



Top is high pass (cut lows), bottom is low pass (cut highs)