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what is "filter slope", it has 12db and 24db?


yeah, so i just got my w3v2's like a month and half ago, and now the w3v3's just came out!

You know that a filter removes unwanted frequencies from a given speaker, right? well, a 24db slope cuts those frequencies off twice as sharp as a 12 db slope. On page three of this PDF, there's a graph of sorts that list 1st through 4th order, 12 db slope is going to be the 2nd order and 24 db will be the 4th order. This way you can see how the two differ in how they drop off.

Further down there's a whole section on selecting a slope.

I wish I had seen this before I posted my questions the other day regarding crossover slopes. lol. I just found this googling for your xover slope question. As soon as I get a chance I'm going to read the whole thing.

I'm not sure the exact defintion of an octave, but say you go from 10hz to 20hz. That's an octave. A doubling of frequency. 100hz to 200hz. 500hz to 1000hz. Etc.
Now, the slope identifies how quickly the crossover is fading out the sound.

If you're fading out at a slope of 12 db:
At 500hz you'd be 0db. At 1000hz you'd be at -12db. At 2000hz (the next octave), you'd be at -24db.
Likewise, if you were using a 24db slope:
At 500hz you'd be at 0db. At 1000hz you'd be at -24db. At 2000hz, you'd be at -48db.

If you go to http://passivecrossovers.com/ and click on the link on the left that says "Order and Slope of Filters", they describe it much better than I. :)

There you go. An octave is the halfing or doubling of a frequency. You are right on all accounts. Stong work.

Yay! I got something right! haha

so i would put 24db to my subs to make sure no highs get thru and 12 to my comps so they can get some bass?

well, from what I remember reading in that PDF last night, that's what they suggested. You just need to make sure your crossover points aren't too close or too far apart. That will take some listening and adjusting I'm guessing.

I don't think it's really a matter of 'getting some bass' as that is really determined by the crossover point, but by cutting the sub off at 24 db, it allows it to jump in and stop ... otherwise I imagine it could get muddy if you know what I'm saying. And by using a 12db slope on the mid, it allows for a smoother transaction to the sub frequencies. Does that make sense?

i have no idea was my crossover points are, or even what a crossover point is!!

The crossover point is the point at which the crossover starts to take effect. So, if you cross your sub over at 80 hz at 24db/oct. your crossover point is 80 hz the slope is 24 db/oct.