Speakers you own are not among the most popular within the audiophiles here - and not my favorits as well . I do not think that new cdp or cables will change your attitude towards your setup. Acoustics are very important also but it will not fix your speakers characteristics. It will help if you pull those bi-pols out into the room some more and use some diffusion behind the speakers but it will not fix everythig. But it should help . If you are still not happy with the way they sound - you know what to do.
Cheers
Cheers