No Improvement With Transparent Reference RCA Interconnects For Naim NDX 2 Streamer

The cables are and have been connected in the right direction.

Forgot to say: my speakers are Aerial Acoustics Model 7Ts.

This quote below is from Transparent's website vis a vis their RCA Reference cables. My old interconnects were first generation Transparent Super, two levels below Reference, so I expected a significant performance impact, and, didn't get it.

"REFERENCE RCA Interconnect is a significant performance upgrade compared to ULTRA RCA Interconnect. Reference level cables are the first products in the Transparent family to be custom calibrated for the specific electrical output characteristics of your components."

Thank you everyone for all your responses. I emailed Transparent sometime ago and I believe their response was their products 70 to 100 hours of break in time, sometimes longer. I also emailed my dealer sales person and he said up to 800 hours. So, that’s why I gave it so long. I am taking the cables back out to the dealer today, either for a refund or to give Transparent another chance to so-called re-tune the cables. 

My dealer is Audio Advice, Raleigh, NC.

Here is an update, and I have to eat some crow on the Transparent cables situation. I must admit that I'm a novice when it comes to hi fi gear. After I complained, Transparent's VP suggested that I ask my dealer's sales person (who has been in the business for 30+ years) to come to my home and check the positions of my speakers.I had done my best to locate them based on hours of internet research and recommendations from the speaker company's president.
My dealer was willing to do a full refund but I wanted to give them the opportunity to see if speaker re-positioning would help even though I was very skeptical. Their expert come out and I left him to spend about an hour assessing my room and then re-positioning my speakers. I was in a different room working and I could immediately tell something marvelous had changed from a different room. I went back into my listening room and was astonished at the sound difference.I also re-compared my old Transparent Supers vs the Reference interconnects and there was indeed a substantial improvement with the Reference. So, I spoke too soon, and feel a bit badly that I wasted you good peoples' time and spoke ignorantly of the cables. So, there you have it.

no_money, Other than the firmware problems, wanted to know your reasons for switching from the 5805 to the 585.5. I know the 585.5 has more power and cost a lot more. Is the 585.5 DAC superior? The 5805's DAC is supposedly the newest but is also in Levinson's "budget" line.

twoleftears, I missed your questions earlier. My home theater room is 12'W x 19'L and my system is set up in one of the 12' ends. My listening chair is 11' back from the center of a straight line between the two tweeters.
I had the speakers set as follows: tweeter 41" from the back wall and 23" from the side wall. I had a 2.5" toe in.
The dealer's expert re-positioned them as follows: tweeters 48" from the back wall and 20.5" from the side wall and changed toe in to 4". Huge improvement in sound!

andy2t,  I'm happy with the sound of my system now. With some music, it could use more power. But I'll take the bait...would you please elaborate the facts on which you base the opinion that the 7Ts are a "bottleneck" in my system. I don't know what that means vis a vis my hi fi system.