2. home-theater
  3. 167737-139155

Dedicated lines — how many? Other advice?

We're redoing our basement and adding an additional panel. This room will become a media room. I may be video and audio at different ends of the room if possible. Not sure.

To be powered:

Video

1. TV
2. AVR

Audio:

1. R & L Monoblock tube amps
2. Preamp
3. DAC
4. CD transport
5. Streamer
6. 3 Subwoofers

QUESTIONS:

(a) Does everything on the list need a dedicated line? Could all benefit? (Including the TV and AVR). Or can I skip the video stuff.

(b) How many dedicated lines for the audio alone? How would you group components on each line?

(c) Any other advice?

Here is the advice I've gathered so far (some from the web, some from A'gon):

  • Get a whole house surge suppressor put in.
  • Use the heaviest gauge copper Romex you can use, never less than 12 gauge and typically 10 gauge (the lower the gauge number the thicker the wire conductors).
  • Use a 20 amp breaker for even the lowest draw source equipment feed.
  • Make sure the power lines are balanced on each side of the power panel.
  • Don't let them staple the wire to the 2x4's inside the walls….Work out some other solution that neither uses ferrous metal fasteners nor pinches the wiring when secured to the framing. The physical pinching can lead to a somewhat narrower audio bandwidth…
128x128hilde45
ditusa's avatar
ditusa
1,887 posts
 
+1 @invalid
auxinput
2,920 posts
 
FYI, VH Audio in USA and Audio Sensibility in Canada sell cryo-treated 10awg Romex.
tvad
11,620 posts
 
Environmental Potentials EP-2050
https://www.vhaudio.com/acpowerconditioning.html

Actual user since 2007.
hilde45's avatar
hilde45 OP
4,974 posts
 
@tvad I had that in my notes from before. On my list.
millercarbon's avatar
millercarbon
12,531 posts
 
Bear in mind a lot of things people say that seem to make sense don’t really pan out when tested. The idea of separating things on different circuits for example. I have done all kinds of stuff that proves this does not work the way everyone thinks. There is even a very simple method anyone can use to demonstrate and prove this for themselves.

Simply listen to some music, flip off all the non-system circuit breakers, and listen again. The improvement you just heard was nothing to do with the system circuit. You didn’t touch that. It is all the other "separate" "isolated" circuits that made the difference. If things on other circuits are isolated or separated then disconnecting them would make no difference. But it does. Therefore they cannot be isolated.

Next do the same thing only this time flip off only circuits with nothing running on them. Another improvement, this time not as big but it is there. I have done this several times for different people, they always hear it. I have done this before and after adding a power conditioner, step down transformer, system dedicated earth ground, etc. All things that are supposed to eliminate and prevent things like this from ever happening. They do not. They do not make even the slightest difference. The breaker flipping trick makes a big improvement, no matter what.    

So what is going on? I could tell you but it is better if you actually do this and think about it, because that is the key, to think and not just repeat stuff everyone else is saying.
More to discover