I have had a set consisting of 2 x 8240A with the 7260 sub that goes with it.
My room is treated at medium acute but not for bass. which gives me an answer in the bass frequencies extremely inconsistent. (Humpback 30Hz, 50Hz and 80Hz in a hole 12db + 10db to 110Hz)
while the connection is made to AES / EBU is part of the SPDIF output of the sound card to enter the sub and went to each satellite with a cable AES / EBU.
Once this connection is made, we can already make a first listen with the system flat.
first observation even without the use of glm software, sound is precise, pretty and stereo image is very good.
the power of this set can have fun without a large volume that the speakers do not come to the clip, and use Home Studio, the neighbors will tell you before you go down to the clip.
So already no doubt this system is Extremely good, but the reputation of 8040 is more to do.
Then comes the time to calibrate the system with the software GLM software and the microphone provided.
placing the microphone at the listening position, and we launch the Autocal. sound is heard on the subwoofer and 2 speakers, then the software calculated the EQ for optimal listening point chosen.
Then come regalge phase between the subwoofer and 2 satellites.
regalge do this once it's time to rewind the system.
the software shows the different correction that was performed on the different elements.
in my case all corrections are made on the low end (20Hz 200Hz jusk'a)
after this calibration the sound becomes a formidable precision, the low and Sub are presented as they should and are a remarkable intelligibility.
med / high is not left out of the calibration brings up details on the pieces that I do not even suspect exist.
Finally, the stereo image is also reinforced and becomes a quality copy.
we feel that the system now sounds fair despite the shortcomings of the parts which are installed speakers.
these speakers with a good mix seems very detailed and deep. a bad mix jumps to ear in the same way.
if you hear it all clearly with this system is that the mix is wrong.
The software offers a lot of real-time control of the speakers (overall volume of each element, the sub phase, delay of each element, 4 notch filter by element, over the response curve in relation to the extent previously made, possibility to bypass the treatment ...)
I am totally convinced by the Genelec DSP system has, I try the system before CRA ki ik multimedia results had given me completely crazy with the problems of phase in all directions. system with Genelec calibration is a real plus and overcomes many defects that includes many home studio.
the only criticism is the price which remains extremely high, but c the price to pay to find a frequency response and power just more than enough for many of us.