Most likely you are over driving the Amp and the distortion is causing the brightness. Is it bright even at the 9-10 clock position? Or gets bright when you go to the 11 clock one? If anything have always found mogami to be warm sometimes even dull.
Hi At low volume only went upto mid volume , it seems my Jamo 426 speakers are behaving funny...how can the sound signature change completely by just a cable change... going from decent/ warm in old cable to neutral /bright in new Mogami 3103 cable, my son and I am are totally astonished - that a cheap normal thin cable was sounding good, I can see Mogami is a very good professional quality thick cable...so what are we missing.
Request Engineers to have a look at my posts and give a solution/option- cables impedance value is playing a role, {as in general amps are designed to have low output impedance so that loud speaker impedance is higher however the impedance of the connecting cable can have an audible effect- just now read on internet web site Sound on Sound} .
The Mogami 3103 cable I have put is unterminated just wire, should I try again and this time put treminated Mogami 3103 cable and hope an ordinary interconnect solves the complete change in sound issue.
Also I will change /put the other Enbee Designer speakers instead of Jamo 426 speakers and check the sound quality.
Then after this I will change the Amps from Marantz to Enbee amp and pre amp to check the sound quality.
Instead of improving sound quality a good cable change can expose defects in Speakers I feel as of now.
So I should not try to improve things too much if they are decent ...and loose sleep....however must say enjoying the journey and am amused at the confusion.
Will post an update after doing all the above. Meanwhile any suggestions are welcome from members in forum... any New Delhi based member or Engineer can also visit my place to help I will try to arrange transport and surely buy beer or lunch.
Cheers
Cheers