The No.1 Website for Pro Audio
 All  This Thread  Reviews  Gear Database  Gear for sale     Latest  Trending
vintage consoles and power supplies / powering down / cooling
Old 4th April 2013
Lives for gear

Desks should be powered down when not in use.
Most electronic components 'like' to operate at around 25 Centigrade and operating them at around that temperature will ensure a long life (Valves excepted).
Hot desks not only 'kill' electrolytic capacitors but switches and pots by increased chemical reactions with contaminants in the air and additional 'dirt' that is dragged through by the airflow.
If a power supply for ANY desk 'fails' during power up cycling it is FAULTY and 'humouring' it by leaving it on because you are 'frightened' to turn it off is evading the responsibility to have it fixed.
Roughly speaking about half of the power that is 'consumed' from the mains appears as heat in the power supply and half heating the desk itself so 'hot' control rooms would benefit from having the supplies removed to a separate airspace (simple).
Some capacitors DO like to be powered continually and their 'response' does change from being newly switched on to being thoroughly warmed up, this is because they are FAULTY if this phenomenon lasts for more than a couple of minutes.
From this, if you cannot get your desk to sound 'good' after a switch on from cold and being left for 20 minutes while you get your coffee, get it fixed.
Matt S
Old 4th April 2013
Lives for gear

Just re-reading, the 'half heat from the supply' refers to usual 'linear' power supplies. Switchmode should be rather more efficient and cooler IN THEMSELVES but of course the DESK will be exactly the same.
Electrolytic capacitors need to 're form' at power up, which for healty specimens should be in the orfer of a few minutes, during which time they will be 'leaky' electrically speaking (they pass a DC current) and during this time switches will appear to 'click', pots 'scratch' and it may upset the biassing of some circuitry.
Matt S
Old 5th April 2013
Lives for gear
Originally Posted by OneMillionMangos View Post
I'd rather pay for green energy than get cheap energy which kills the planet. But it is a bit excessive - if I heated this place with electric radiators 24/7 to room temperate it would cost over 1000€ per month for 2 control rooms and a live room.
AFAIK it costs about 0.25 €/kWh.
I don't know how large is your studio, but having to use so much power for heating means that you have no insulation at all, an aircraft hanger or you've missed the calculation.

If you have a 2 kW radiator it won't burn 48 kWh/day, because the thermostat switches it off when the room temperature is high enough. I think that in a medium-sized control room, which is usually well insulated, you need almost no heating once it reaches the wanted temperature.
Old 14th May 2013
Gear Head

We are still in test mode with our supplies and I have taken on a partner, so
It will not be officially released for a month or 2, but we have measured a 40%
decrease of energy consumed, more than 2 dBu less noise from the quad buss,
much less fan noise, and 500 less watts of heat in the supply room on a
SSL 4048. Our power supply does use "soft start". Up until the G+ series
the SSL power supply had no "soft start" and turning the desk on one
bucket at at time cancels that! I have noticed after turning a SSL
off and then back on, it will act a little goofy for a hour or so and then
they are usually fine.
Old 19th February 2015
Gear Head

High quality replacement Power supplies with soft start are now available for SSL and Neve:
Atomic Instrument
Old 26th February 2019
Gear Head

Atomic Instrument
Post Reply

Welcome to the Gearslutz Pro Audio Community!

Registration benefits include:
  • The ability to reply to and create new discussions
  • Access to members-only giveaways & competitions
  • Interact with VIP industry experts in our guest Q&As
  • Access to members-only sub forum discussions
  • Access to members-only Chat Room
  • Get INSTANT ACCESS to the world's best private pro audio Classifieds for only USD $20/year
  • Promote your eBay auctions and listings for free
  • Remove this message!
You need an account to post a reply. Create a username and password below and an account will be created and your post entered.

Slide to join now Processing…
Thread Tools
Search this Thread
Search this Thread:

Advanced Search
Forum Jump
Forum Jump