5 ms·

Why not just use a UPS (Uninterruptible Power Supply)?

LeoPanthera 10y ago
Even a UPS is probably overkill. A Power Conditioner should be sufficient. https://en.wikipedia.org/wiki/Power_conditioner https://en.wikipedia.org/wiki/Power_conditioner
mirimir 10y ago
My thought, exactly. With a dual-conversion UPS, I don't believe that there'll be any noise from the power grid.
metaphor 10y ago
Audiophile Mistake #1: Proposing a sensible solution to a problem which doesn't exist.
- matwood 10y ago
  Like wooden vs. plastic volume knobs? :) http://bobbyowsinski.blogspot.com/2012/05/485-volume-knob.html http://bobbyowsinski.blogspot.com/2012/05/485-volume-knob.ht...
- LeoPanthera 10y ago
  It's not completely outlandish to imagine that noisy power could cause noise in the audio output of an amplifier. I would hope that any good quality amp would filter the incoming power, though.
  - superuser2 10y ago
    I'm guessing that good quality amps for the install market are designed to be part of system where these concerns are taken into account.
  - Johnythree 10y ago
    Yes, if it does, it's because of crappy (eg cheap) design. Any amplifier designer should assume that the mains power is very, very noisy.
timpattinson 10y ago
Because some of these venues also run lighting rigs in the order of magnitude of 100KW and probably don't have the space/money/expertise to install a UPS with that power capacity.
- TakerofVita 10y ago
  Would lights need to be run on the UPS, or just the audio equipment?
  - cdcarter 10y ago
    A single loudspeaker in a line array can draw up to 24A at 240V [0]. Even a very small rig of 6 speakers would require over 30kw. A 50kw UPS [1] can be purchases for a very affordable $25,000 in 2016 [2]. When building a performance art venue in 1960 or today, a technical ground is a much more suitable option than a UPS. [0]: http://www.meyersound.com/sites/default/files/leo-m_ds_a2.pdf http://www.meyersound.com/sites/default/files/leo-m_ds_a2.pd... [1]: http://powerquality.eaton.com/Products-services/Backup-Power-UPS/93PM.aspx?cx=3&cmx=231&GUID=9504FAC4-72FB-4F2A-8EA1-884DC98E48FA http://powerquality.eaton.com/Products-services/Backup-Power... [2]: https://store.fgcupssystems.com/products/eaton-93pm-50kw-480-480v-9pa05d0000a00r2-double-conversion-base-unit-ups?utm_medium=cpc&utm_source=googlepla&variant=3284689283&gclid=Cj0KEQjw0MW9BRDxtYTn2_S699MBEiQAw33y48QlEEM0drpwzwMRday9T7oUo7vXtQ7myXfVEsAb7ncaAshd8P8HAQ https://store.fgcupssystems.com/products/eaton-93pm-50kw-480...

Even a UPS is probably overkill. A Power Conditioner should be sufficient. https://en.wikipedia.org/wiki/Power_conditioner https://en.wikipedia.org/wiki/Power_conditioner

mirimir 10y ago

My thought, exactly. With a dual-conversion UPS, I don't believe that there'll be any noise from the power grid.

metaphor 10y ago

Audiophile Mistake #1: Proposing a sensible solution to a problem which doesn't exist.

matwood 10y ago
Like wooden vs. plastic volume knobs? :) http://bobbyowsinski.blogspot.com/2012/05/485-volume-knob.html http://bobbyowsinski.blogspot.com/2012/05/485-volume-knob.ht...
LeoPanthera 10y ago
It's not completely outlandish to imagine that noisy power could cause noise in the audio output of an amplifier. I would hope that any good quality amp would filter the incoming power, though.
- superuser2 10y ago
  I'm guessing that good quality amps for the install market are designed to be part of system where these concerns are taken into account.
- Johnythree 10y ago
  Yes, if it does, it's because of crappy (eg cheap) design. Any amplifier designer should assume that the mains power is very, very noisy.

timpattinson 10y ago

Because some of these venues also run lighting rigs in the order of magnitude of 100KW and probably don't have the space/money/expertise to install a UPS with that power capacity.

TakerofVita 10y ago
Would lights need to be run on the UPS, or just the audio equipment?
- cdcarter 10y ago
  A single loudspeaker in a line array can draw up to 24A at 240V [0]. Even a very small rig of 6 speakers would require over 30kw. A 50kw UPS [1] can be purchases for a very affordable $25,000 in 2016 [2]. When building a performance art venue in 1960 or today, a technical ground is a much more suitable option than a UPS. [0]: http://www.meyersound.com/sites/default/files/leo-m_ds_a2.pdf http://www.meyersound.com/sites/default/files/leo-m_ds_a2.pd... [1]: http://powerquality.eaton.com/Products-services/Backup-Power-UPS/93PM.aspx?cx=3&cmx=231&GUID=9504FAC4-72FB-4F2A-8EA1-884DC98E48FA http://powerquality.eaton.com/Products-services/Backup-Power... [2]: https://store.fgcupssystems.com/products/eaton-93pm-50kw-480-480v-9pa05d0000a00r2-double-conversion-base-unit-ups?utm_medium=cpc&utm_source=googlepla&variant=3284689283&gclid=Cj0KEQjw0MW9BRDxtYTn2_S699MBEiQAw33y48QlEEM0drpwzwMRday9T7oUo7vXtQ7myXfVEsAb7ncaAshd8P8HAQ https://store.fgcupssystems.com/products/eaton-93pm-50kw-480...