Which cables must not touch another?

None except for the SC to 252 Burndy and SNAIC that must be rolled around each other.

Mains are worse than IC's. Speakers' cables are more forgiving. I check my mains each and every time I am starting a serious listening session. 

Chag -

If you use a hiline interconnect then its important to have it hanging free. If it touches anything it seems to kill the dynamics. 

In general keep power cables away from others.

Try to keep cables espescially I.C.'s from touching one another, floors and walls. Try to let them hang in free space.

If it cannot be avoided make sure they cross at 90 degrees to other cables and don't run in parallel with other cables.

Re: the 252 make sure the SNAIC and Burndy run in parallel as close as possible. One wrap around these is OK, but I wouldn't roll them around each other. Don't use cable ties.

Yup, don't roll the SNAIC around the Burndy on the 252 & 552. Run them close and parallel. Also, good advice on hiline - hang loose and no touching. 

Graham - what is the difference between wrap & roll? 

Nothing in this context. 

Christoph, also, depending on system, Ethernet cables should be routed well clear (let alone not touching) of interconnects and FM aerial leads.

Source burndy cables - unstressed when connecting, preferably (but not neccessary as I found out) hanging free.
Try not to cross them with pre-amp burndies / SNAICS.

Mains leads - try not to mangle them up and if possible avoid crossing them. This is much easier with PowerLines as the cable themselves are quite flexile. 

Christoph, I see you have a 300. Here's a bit more in depth info. on Burndies from the FAQ's section.

https://forums.naimaudio.com/to...a-bit-about-burndies

What if any is the reason for the advice about running snaic and burndy in parallel?

Also if you are using power blocks keep them suspended from the floor, and if you can keep power cables away from the floor this is also a good idea free and increases SQ.

Claus

Claus-Thoegersen posted:

What if any is the reason for the advice about running snaic and burndy in parallel?

Claus

It's actually recommended in the manuals by NAIM for best SQ.

That's good enough for me; haven't tried it any other way.

Perhaps Richard could provide the technical reasons.

Thanks all for your help, i will do my very best!

Yes indeed the Reference Manual Preamplifiers specifies for the 252 as well as for the 552 that "For best performances the Burndy and 5 pin DIN cables should be run as close together as possible." I believe it has to do with keeping the earths of both cables as close as possible.

Chag - 

Chag... posted:

I believe it has to do with keeping the earths of both cables as close as possible. 

https://forums.naimaudio.com/to...788#1566878607669788