How to adjust BIAMP to my 12s+CD+horn

[endrek]

Hi,

i've build a BassReflex box with 2 12MI100 (Beyma) + CD755Nd + Td590 horn.

I posted a thread time ago... and asked wich filter would suit best, and got the answer of :
1.-´FD 250 Beyma, once i tryed it, it sound way too much metallic, way much crunchy highs, even with the -7,5dB attenuation for high's and -3,5 db Eq @3KHz that the filter allows you.

Then i tryed the FD 212, which went a little bit better, but still distorts a lot the highs. (Even with the same setup said before...)

i've had the oportunity to measure it , at anecoich room, and there really high peaks at 5K, 8K , 9K , something like 8 dbs difference.

Now i want to BiAmp. Because someone told me that the problem is, that the 12s and the CD aren't getting the same voltage, well i think he ment , that they are getting the same signal, but, CD755Nd sensivity is 112 db ( http://profesional.beyma.com/ingles/pdf/CP755Nd.pdf ) and the 12MI100 sensivity is 100 db( http://profesional.beyma.com/pdf/12MI100E.pdf ) , wich means that if it would be 100% coherent ==> 106db with the two, but cause it is practically imposible, both 12MI100 wired in parallel is 103db sensivity right???

Or is it less the 12s sensivity because of the 4Ohms??


I want to bi amp, and enter both the same level, and try to maximize the flat response.
How can i do it? Can someone help me with the math's?? Or how can i do it with a tester'?
NEED HELP, REALLY REALLY DUNNO WHAT TO DO i've changed 2 times of filter, and this is my last option But dunno how to setup, so the CD and the 12s get the same amount.

pd: i don't have 2 amps (for now), now i just have a V4001 American Audio, wich i can use one channel for the 12s and one channel for the CD.

thx a lot for your help.

[endrek]

Or how could i make that the sensivity problem of the CD wouldnt affect me so much, with the FD212 Beyma filter on???
is this possible??