EQ: Splitting treble, mid and bass...

[Alpha579]

Hey all.
I was thinking of doing an active eq thing, but im having trouble splitting bass mid and treble. This is what i tried:
                    1nf
   In------------||-----------trbl
           |
          /
           \  18K
          /
           \
          |           100K
            ---------/\/\/-----Bass
          |
          |        22nf
          --------||-------Mid

Shouldnt this work?
All help apprieciated,
Alex

[Ansil]

uhh sorry never been good at figuring out the text schematics. can u draw it and post it or email it to me and i will look at it..  at what freq did you want to split eachone  i mean exact values and ican probally draw up soething..

[Nasse]

:shock:  :roll: Looks like a PASSIVE eq to me. Active ones use active filters made with opamps, transistors or digital circuitry or software. But we probaply need more info about what you want it to do for you.

I think there is much info about passive and active EQ and filters around, just check Schematics and Schematics2 for start.

[Alpha579]

Sorry, didnt make it clear at all. Your right, thats passive, but im going to incorporate that into an active circuit. Sorry for the misunderstanding...
Ansil, im not exactly sure which frequencies i want, but ill give it a try...
B:0-400hz?
M:400hz-2kHz
T:2kHz-20kHz
Thanx for that,

[Nasse]

:oops:

Only little info around these "passive crossovers at line level" but found these. And there was good article in Elektor Electronics about passive crossovers some time ago, maybe 1997 or something?

http://www.t-linespeakers.org/tech/filters/passiveHLxo.html
http://www.silcom.com/~aludwig/Sysdes/Crossove_Design.htm#Bi_amping

I just was curious about those because they are said to work well with simple two way speakers and satellite speakers with subwoofer systems (yeah decided to start putting my small home pa in use and together, bought a small cheapo Behringer mixer and maybe my self made one gets some rework...)

:oops: I have a very old circuits book from 70´s and there is a seven-band passive equaliser for guitar circuit (just caps and resistors and pots, and gain recovery/buffering amp). It might not be worth building, but I´ll try to post it later next week, if possible. First I have to get back a digital camera that I smashed some times ago. Hope they can fix it, the girl in the shop said they can fix it, perhaps... :oops: