pwiles1968:Darren any suggestions on what to do if you filtered mains Block but have hard wired Mains Cables on your units? Other than re-wiring the units of course. Unfortunately my Mono-Block's and CDP are hard wired 2 core.
I would have thought that good cable management will help, keeping them away from other cables which are not on filtered blocks, can Ferrites make a difference, the broadband clip on units can be found quite cheaply, would reducing the cable length help as moving the plug is a simple enough job.
Hello Paul
You have three options (in order of performance):
1.) Have a high performance power cable hard-wired
2.) Have an IEC socket installed to the back panel
3.) Wire on an IEC adaptor to the existing cable (about 3-4 inches from the back panel)
Points 1 and 2 can be done at most electrical workshops (many hi-fi shops have good workshops where such work can be done). Point 3 is the cheapest option and is the solution that most of our customers opt for. It can be done by yourself as it is a very simple procedure (as easy - if not easier - as wiring a mains plug). The downside is that you still have some of the existing cable present, although the benefits of being able to have a high performance shielded power cable usually outweigh any small increase in impedance that the solution causes. Please bear in mind that if your components are still within warranty, the manufacturer may deem any of the above as modification which could invalidate any warranty or claim.
With regards to cable management, keeping mains cables away from audio cables (especially interconnects) is a very good idea. This will limit any interactions such as the mains cables inducing currents into the interconnects which can degrade the audio signal. Reducing the length of the power cables will not necessarily yield gains unless there is excess cable which results in close promximity to audio cables. Carefully placing ferrites on household appliances that are noisy (e.g., dishwashers, washing machines, fridges, freezers etc) can reduce noise feedback and thus can be worthwhile. Ferrites vary in quality (the vast majority are mass produced to low tolerances) and performance can therefore vary. General clip on types are fine to use on household appliances but I would not recommend using them on your actual hi-fi equipment unless the ferrites are known to be first class quality (made with the best materials to tight tolerances).
I hope this helps.
Best regards,
Darren