Does silver speaker wire sound bright?


I purchased a kit of 99.999% pure silver speaker wire with PTFE insulation and assembled it. I installed it on my system and it seems to scream at me. My system is all tube (Melos)and my speakers are the North Creek Rhythm. I use the preamp also as a headphone amp and use Grado SR325's. The headphones are not bright they lean tward a little dark sounding. I feel the brightness is in the cables and wounder if they will mellow with age, and how long will it take?
mi3491
I am willing to wait for the sound to get better. Just to clairify, these cables are 99.999% pure silver, not copper, 15 AWG with no lug termination. I agree with Carl that the cable should be a larger AWG. I was not aware of the cable he mentioned and could not afford anything more. Maybe I could mate the cable with a reasonable cost copper one, and biwire using the silver for the tweeter and copper for the mid-bass. Any thoughts?
I didn't realize you had bi-wire connections. Yes, by all means, try doing that.
forgot to mention I have a pair of AUDIOQUEST .5m LAPIS x3 w/rcas for sale here. Asking $200 shpped
Stranded silver sounds more etched in my system, yet extremely detailed. Solid silver seems smooth sweet & more accurate in timbre. It depends on the brightness of the rest of your system and the listening room. I sometimes switch from stranded to solid silver to change the systems character,but always migrate back to the solid silver. Silver is a better conductor for interconnects but you have to be careful with its implementation. I tried changing a 2 inch long internal wire on my DAC from the stock common stranded copper to solid and stranded silver and it changed the sound of the unit for the worse- bright, etched, harsh, made only certain program material sound correct. Many times the designers try all types of internal wires in development and design a units "characteristic sound" around their choice of wire.
I am using a silver balanced digital interconect. My other interconects are Distech Platinum and Cardas Hexlink 5. My Speaker cables are three separate pairs of pure silver wire equaling 15 AWG individually wrapped in PTFE. My amp and preamp are tube and the DAC is a PS Audio Ultrlink II. I am pretty sure it is not the electronics. The system is sounding smoother each day, but the bass is not a strong as I had hoped.