Awaz, your speakers are fine. They just need some of
these to get rid of the mechanical (sonic) and electrical (static) resonances. After installation of these
old door kno sonically pure speaker cable isolators, you will enjoy a wider, (yet less muddied) and full timbre sound stage. Gone will be the gross harmonics of veiled bass and you'll enjoy new previously hidden nuances from the middle mid range through the lower highs. Music you've heard before will now reveal itself fully to you with new detail as though you were listening to it for the first time. Had you purchased more expensive speakers then of course you'd need
these which use...wait for it now....."advance complex material technology" ..yeah that's right ACMT can be yours for only $1600.00, of course you'd need two sets for any real set up. You are using speaker cable, right?...not just any old speaker wire I hope..
this should help at only $400. per meter. (sales per metre available upon request for a 10% surcharge.) Not essential of course but if you want the best power to come out of your in wall cheapest romax your builder could find, then you'll need
this to get the best performance out of your speaker sub amps. Replacing your mains cord (2) will make the bass less middied (I misspelled muddied here but it seems to work like that so I left it) and give it more punch and presence without the distortion caused by subsonic artifacts.
Of course if you're buying all of that, then I've got this HF nitrogen compressor for sale. Stick it in any enclosure filled with 100% nitrogen and this puppy will compress it for your tires. Normally it goes for $99.99 but for the right audiophiles I can get them for only 7 times that and I'll throw in some ACMT and compressor oil that has been exposed to anti friction enhancing UV filtered solar eclipse moon glow. (oh, I forgot to mention that these compressors
go to eleven.)