Electrical Panel Grounding

wgutz,

A mix of diffusion and absorption is always a good thing!

High frequency hardness is a funny thing. While a lot of people focus on 1st  and 2nd reflections, this can also be treated by generally adding absorption in the room. In other words, some of the problems are due to direct reflections, but some are just doe to how slowly or quickly it takes signals to decay.

You can experiment cheaply with throw rugs/blankets and putting other soft, absorbent materials on the walls. If that takes you where you want to go, then you are going in the right direction.  Also, don't neglect the ceiling!

You may also experiment with toeing speakers outwards so you are not in the direct line of fire of the tweeter.

Wguts, none of this is necessary nor will it improve anything.

What matters is that it all be referenced to a single point, where the neutral is bonded to it. Putting in a single, or 20 ground rods won’t help this at all.  Follow the NEC, and local codes which may now require 2 rods.

I’d focus on your room acoustics. :)

The point of the ground is to act as an earth safety, which it can only do well if bonded to the neutral at 1 location.

Now if you want to run isolated grounds from the panel, that's fine.

Earth "grounds" at different physical locations can have several volts of difference in potential. Depends on lots of factors. Only way to ensure it is at 0 Volts relative to AC is to tie them together. :)

Also, important, while you may have multiple grounds tied together, and even loop them, you may ONLY tie the neutral and ground together at one place, the service entrance. The service panel does not necessarily equal main. :)