Recommended cabels

I have a linn pretec preamp and a bryston 4b amp I bought new in 1992. I also have a linn basic turntable with an akito arm and adikt cartagena. I recently upgraded my speakers to a pair of dynaudio special 40s ad a rel s510 sub. I also have a cocktail audio X45 for my digital. Now I am not getting as tight of bass as I want or quite that crisp clean highs. Right now I have Naim speaker and interconnect cabels I bought back when I got my amp and preamp.can anyone  suggest what I can look for in New speaker wire and interconnects to give me that sound I. Am looking for Thank you Michael.