Center Speaker - JBL ES 25C - Frequency Response: 80Hz – 40kHz (–6dB) this is actually -3dB
Fronts JBL ES 20 - Frequency Response: 60Hz – 40kHz (-3dB)
SurroundS - JBL ES 10 - Frequency Response: 65Hz – 40kHz (-3dB)
On running "Audyssey eq" on onkyo receiver, the Fronts are set to 50Hz, Center to 40Hz and Surrounds to 50Hz. LFE is set to 120Hz. I have set subwoofer level nob to 10 'O' Clock position and Phase switch is turned to 0. CrossOver nob is set to Maximum on Subwoofer at 150Hz.
My room size is 20X10. Is there any problem in my above configuration ? If not, What changes should I make in above configuration?
That's what Audyssey set everything for? Seems out of whack to me.
All of your speakers are set to crossover at a frequency lower than they're designed to handle. Along with that oddity, the subwoofer is crossed over higher then it need be. I'd try setting the speakers to crossover at 10Hz above their respective lower -3dB point, and then set the sub to 100Hz and see if that sounds better. Depending upon how much bass you like perhaps upping the subwoofers gain to the 12 o'clock position is worth considering as well.