Apr 13, 2010 03:42 pm Well, for 15" mids, 125hz is rather high. You might want to try 75hz for the HPF for the mids. And let the sub overlap some. Move the LPF for the sub to about 100hz. That may clean everything up.
xover sounds terrible
Posted on Apr 13, 2010 03:37 pm
centurydrums
Member Since: Mar 19, 2010
I have decided to go three-way with my speaker set up, since the internal crossover failed. I have set the sub frequency at 125, but the mids sound awful thru all frequencies. They sound real boxy. I can bypass the behringer cx3400 and the speakers sound good. Is this xover just to cheap to sound good? I have changed the wires in my speaker boxes 15's wired together and the horn seperate, with no internal xover.
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Apr 13, 2010 03:42 pm Well, for 15" mids, 125hz is rather high. You might want to try 75hz for the HPF for the mids. And let the sub overlap some. Move the LPF for the sub to about 100hz. That may clean everything up.
Apr 13, 2010 04:36 pm You have got me lost. The input filters on my amps are set 50hz for the mids and 30 hz for the subs.
On the xover I have a dial for low xoverfreq. and mid/high xover. freq.
How do I let the sub overlap? I do not understand HPF and LPF. I do not see these on the xover
Apr 13, 2010 10:46 pm Sorry that I haven't gotten back to you on this for a while. I had some other things going on.
But, this is going to take some time to explain.
HPF, stands for High pass filter. What this means, is from where you set your dial at on your crossover, all of the frequencies that are above that point are allowed to pass. Anything that is below that point is filtered on a slope. And does not pass.
LPF, stands for Low pass filter. And is the opposite of the High pass filter. Everything that is below the point of the dial will pass. Anything above will be filtered on a slope.
Now in your case here; with a simple analog crossover. The slope is fixed. So, you can not get in there and play around with different settings for it.
And what a slope is, the amount of frequencies that are filtered down below the noise floor. Or below to the point that the human ear can no longer hear them. There are many mathematical types of slopes that you may have heard of. Such as -3 dB per octave, -12 dB per octave, -24 and -48. All of this is just how fast the rate of decline is. Think of a slope looking like a sky jump. (Rather how it gets it's name.) The more negative the number, the steeper the sky jump.
Now a crossover is just a collection of HPF's, and LPF's. What you are doing is setting the amount of frequencies that goes to a driver. (When addressing an individual speaker in a box, it's referred to as a driver.) So a sub driver will get between 20hz's and 125hz's. Now depending on the type of Mid driver (Be it a 15", 12", or even a 10") Can be set from 75hz's to 1.6khz's. And then the rest goes to the High Frequency driver. (Horn) And depending on how this is all set up, is how a crossover is doing it's job.
For a three way system in stereo, you are going to need two of your crossovers that you bought. With only one, you can only run in mono.
I can't find the manual for your crossover. But, from what I remember of these types of units, the first channel of the crossover in the three way mode is for the sub. The second channel of input "A" is not used. On the second side, the first input is for the mids, and the second is for the highs.
So, you set the first filter to 100hz on channel one. Then on the second input side of the crossover, you set the first filter to 75hz. Now remember, both of these are set to the X1 setting. One the second dial of channel two, you set it to X10 and move the dial to where your manufacture says it should be. Typical is 1.6khz.
Now remove the 30hz filter from your amp. This is a HPF filter. Your going to want the extra low end in your sub.
Give this a try and see how it sounds. And if your still having issues with it. Send me an email with all of the specs of your system and I'll try to get you some better settings for your set-up.
Apr 14, 2010 12:31 pm Here is the manual pdf www.behringer.com/EN/down..._P0100_M_EN.pdf
It is a 2-way, 3-way stereo, 4-way mono. I have been trying to run it mono, but the wrong lights light up. it seems to work better in stereo. In mono mode there are different lights on both sides. But no power coming out of them.
I think it is just mono in 4-way operation only.
On the back hook ups are 3 output connections, Low, mid, and high. I have the XOVER freq. button pushed out for 1X.
It sounds pretty good in stereo, I can live with it like this.
Now then where should my crossover points be set at. I am not a very experienced sound guy, I have only set the pa about 10 times or so.
I have the Low/MId set at 125, and th Mid/High at 3.5K, this is just a cd player for material.
I sure appreciate your help Rob!!!!!!!!!!!
P.S. The big problem I had was the xover X10 freq. button pushed in, this robbed the mids.
Thanks,
Mike
Apr 14, 2010 11:28 pm If it sounds better in 2 way mode, then do you still have the passive crossover in the box?
This could be why you were having a bit of trouble with the sound. The passive crossover was trying to work in conjunction with the active unit. (The Behringer.)
I think that 3.5k may be a little high. It could make the horn sound a bit harsh. Being that the mid is a 15". But, this is not an unusual practice. Turbosound does this with all of it's boxes. It keeps the vocal range in what we call the paper. Meaning that most of the vocal range is between 250hz, and 3.15khz. And keeping the crossover point high, all of it falls on the 15" driver. Which is made out of paper. Not metal.
Apr 15, 2010 12:42 pm No, it is in 3-way stereo, and my speakers no longer have an internal xover.
It is easier to hook up in stereo, in mono the corresponding lights do not match the back outputs.
It is kind of hard to explain, but I am fine running this in stereo.
Thanks,
Mike
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