Originally Posted by Locoelectrician
Well, the boys are at Boy Scout summercamp and after a long day of refinishing my deck, I had a few beers and took the system for a test drive (Daft punk doin it right followed by comfortably numb live from the pulse tour) and am happy to report that everything is perfect. No lights dimming whatsoever. Maybe it's just the beer talking but I'm pretty sure before, after a hard bass hit it would soften quite a bit before it had a chance to recuperate, not the case now. Sounds wonderful and for the minimal amount of money spent, it's a win. Just wanted to follow up because so many question threads end without a result.
The follow-up is appreciated.
Many systems could likely benefit somewhat from better delivery of wall voltage/current. I don't think is always worth it to dig into existing walls. However, if one has ready access, dedicated circuits with up-sized wiring can be beneficial. With the proliferation of bigger subwoofers/multiple subwoofer systems, and more and more demanding/explosive recorded material, it's prudent to keep an eye on the line side of things.
I've experimented with loading up my entire system, on an already loaded circuit, to hear/measure for myself the impact of voltage drop/current delivery. It's truly amazing how much you can get away with on a circuit with little audible impact (SMPS help). I certainly don't recommend it for safety reasons, but I placed my entire 16kw system on an already loaded (~10a) circuit. Amazingly, it still had adequate punch, etc. Those not familiar, a breaker will pass huge amounts of current past it's rated amount for short periods of time.
The effects are subtle, clearly based upon playback level and spectral content of the material. But it had decent punch and impact. Conversely, once adequately powered, the playback has an added realism and ease ... and of course the bottom octaves are rendered more fully and just sound better .. especially the transients. No surprise there.
Anyway, dedicated/upsized circuits are a good idea for most any contemporary system. As someone above mentioned receptacles only can physically handle a certain size wiring, true. However one qualified to do so can always make joints at the receptacle reducing the wire size to #10, #12 etc. Very common and often used in dealing with voltage drop in commercial/industrial wiring.
The breaker will pass the current your system needs. So you eliminate the impact of the typical wiring by upsizing. The big pulses of high current can result in voltage drop, .. the current flow is impeded by the inadequate wire size. So, you size the wire for the big peaks. #10awg is very likely fine for most scenarios. But if it's a longer run, maybe larger wire is needed.
Either a single, or multiple runs of 10/3, on a dedicated circuit, should be good for most everyone.
In all cases, utilize someone qualified to perform electrical work safely.