Ugly peak in the midrange

I have build some pa speakers with these specific drivers:

Bass/mId: www.monacor.dk/produkter/hoejttalerenheder-pa10-12/vnr/105410/
High: www.monacor.dk/produkter/hoejttalerenhed...adiskant/vnr/103440/

The problem is i have a bad peak in the midrange with center in 1k hertz, and when i attenuate from 500-2000 hertz on my amplifier, the sound gets really really good. I have to attenuate 1k with 12db according to my amplifier.

I have made the passive crossover work at 4000hz. Maybe if i made a new LP filter at 2000hz or 1000hz for the bas/mid, and that would decrease some of that ugly peak. What else could i do? i do not like to do that much of eq'ing

I should also say that these are part of a bigger system with a sub, but i would like to work them alone too.

You will likely find that your "bad peak" has much to do with your selection of 'Drivers.

The LF one, in it's spec sheet, says it is only suitable for a maximum frequency range up to 4000Hz, so without important figures to clarify this then really you should be crossing it over no higher than 2200Hz as high frequency 'beaming' could well be a part of the problem you are observing/hearing.

Now the HF Horn/Driver you are looking to use has a minimum recommended X-Over frequency of 4000Hz in it's spec sheet.
I wouldn't recommend going below this frequency for this Horn/Driver!.

The combination of the LF Driver 'Beaming' and your Horn is most likely the cause of your 'peak' problem especially with your Horn resonating at 1300Hz.

So as a solution:
try a different Horn/Compression Driver combination with full capability down to 2000Hz, alter your X-Over to suit this. Suggest you having a look at BMS products for this for cost/quality?

Make certain that you are using a correctly designed 12dB per octave X-Over filter.

hope this assists, others may come along and better clarify what I've suggested

Mik

I haven't read much about beaming, but can it cause the peak that i experience? as i understand beaming would make the sound bad when i move around the speaker, but it wouldn't peak any frequencies.

Anyway I think it would help if I exchanged the tweeters with a driver, and lowered the xover.

Do anybody else know what could cause the problem? I also have a zobel filter on the 12"