Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: interesting

Posted by Ugly (A) on June 29, 2007 at 22:28:07

In Reply to: RE: interesting posted by Ted Smith on June 29, 2007 at 14:55:14:

Howdy Ted,

I kind of geek out on things sometimes, so I'll understand if you get bored and quit replying :)

In the end I would definitely approach a licensed pro to get the job done, but I also expect I'll have some design already either written down or in my head that I would expect the installer to closely follow while offering advice on how to pull it into code conforming configuration.

I really like the single ground idea and I bet it sounds really good that way too. I think the only way that's gonna approach satisfying code around here where I live is with conduit. If I could get away with PVC for the conduit material or somthing easily accessible like that I think that would satisfy my needs. Do you happen to know what your conduit material is? I suspect most are metallic and grounded but I'm sure no electrician.

Regarding the questionable signifigance of this particular detail: the skeptic in me always doubts and is stingy with the money but the eccentric audiophile says nothing is too good for my precious. Those two are constantly going at it.

I have a nagging voce telling me maybe there is a concern under the right conditions. I think what would worry me most is high current lines. I know my (class AB) amps don't have any real regulation on the final stages rails and so will be fairly susceptible to line noise and I'd rather avoid power conditioning and filtering as much as possible.

Bear with me I came up with a hybrid solution for the forums consideration. I think this hybrid approach could allow for taking advantage of the benefits of your approach but avoid ptential power quality pitfalls where they are expected to be a concern. For example I like your solution for low power devices with very little ac line current demand because low power devices, ie low ac current draw devices, should minimize this potential coupling between ferrous conduit and service conductors current and you still get the added RF immunity a single honkin ground offers. Then for higher powered devices like monoblock solid state amps for example you could run another set of dedicated lines that are all independent, ie no conduit, and have their own ground lines etc since these are the devices which might be more apt to have strong coupling with surrounding conduits, wires, environment, etc. By seperating out the high current lines this way would allow them to be routed at a slight distance to reduce the inductive coupling.

I would never let something like this slow me down from getting dedicated lines. I have an audio tweak budget regeneration cycle going right now which pushes a luxury item like dedicated lines out a while so I have time to think about the possibilities. Maybe your're right and this is all worrying for no reason but at least I'll have thrown my idea out here on this forum for critique. It always surprises the great answers I get by discussing on AA here. You all have a great thing going with this website.

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