Author Topic: Power supplies working at 240v and efficiency  (Read 117 times)

MarconeMusic

  • Jr. Member
  • **
  • Posts: 55
  • Karma: +0/-0
    • Halomusic.ca
Power supplies working at 240v and efficiency
« on: April 11, 2018, 09:38:46 AM »
Hi.
Iíve heard rumours and Iíve searched the forum to find a definitive answer.

Do our power supplies work more efficiently at 240v than 120v?

I have the option at our place to set it up. Currently weíre on 120.

We just wired up a 600 line in. Transformer. Etc.

So. Upgrade to 240v?

Letís hear bout it from yíall!

Pros. Cons.



neumann25

  • Newbie
  • *
  • Posts: 28
  • Karma: +0/-0
Re: Power supplies working at 240v and efficiency
« Reply #1 on: April 16, 2018, 05:46:27 PM »
  Were you referring single phase 240,  120 per leg ? .. I found 120 single phase sounded much better than 120 per leg = 240!  Now if your in europe and can do single phase 240v  that sounds great! 

waltzingbear

  • Full Member
  • ***
  • Posts: 246
  • Karma: +10/-0
    • Portland, Oregon
    • Waltzing Bear Audio
Re: Power supplies working at 240v and efficiency
« Reply #2 on: April 17, 2018, 06:18:33 PM »
There is not much change in efficiency between 120 and 240 Vac, still needs the same power. Going to 240 does reduce the wire size needed for the same power level (Power=VoltsXAmps)

In theory, in the US, going to 240Vac would give you the advantage of balanced power, as that is inherently what it is. Any individual installation can of course have its own realities, just because its balanced voltage in setup doesn't mean the load is balanced, and that could possibly have an effect on interference and harmonics. A supposition.

By the way, "120 per leg = 240! " is still single phase. There is no "two phase" in actual usage, only single and 3 phase.

Cheers
Alan
« Last Edit: April 17, 2018, 06:20:54 PM by waltzingbear »
Alan Garren
Waltzing Bear Audio

MarconeMusic

  • Jr. Member
  • **
  • Posts: 55
  • Karma: +0/-0
    • Halomusic.ca
Re: Power supplies working at 240v and efficiency
« Reply #3 on: April 18, 2018, 07:04:14 PM »
:) awesome.

SO... should i? Hahahaha....


waltzingbear

  • Full Member
  • ***
  • Posts: 246
  • Karma: +10/-0
    • Portland, Oregon
    • Waltzing Bear Audio
Re: Power supplies working at 240v and efficiency
« Reply #4 on: April 19, 2018, 05:40:31 PM »
we don't really know where you are, and that makes a difference in what type of power distro you have to begin with.  And that's before any attempts at adjusting for "best sound".

Personally, in the US, I would use 220Vac  power to run an SSL, and have done so.  As all things though, it is a systems approach that is needed. I have been putting them into large system integration where there will be too much power used to even consider some of the oft touted minimalist approaches, such as running everything off one leg.  If you are using a full sized SSL I think that will generally be the case, but if you are using a cut down board, there may be other options.

So, as usual, it depends. :-)

Cheers
Alan
Alan Garren
Waltzing Bear Audio