OCD Alert: Power On Sequencing

Posted by: Simon-in-Suffolk on 08 January 2016

ok Forum, interested on experiences on this one.

I recently simultaneously powered up my Naim equipment on from scratch having been off for a few days. After a few hours I sat down to listen .. It sounded a little lacking in life .. I have had a terrible head cold and I put it down to that. Today feeling somewhat better and having the afternoon off I sat to listen to the Naim... still not right..

So I powered down NAC252/SuperCap and 250.2 and left sources powered up. Left it a minute.. I then powered up the 250.2 let it click and stabilise for 20 secs or so and then I powered up the SuperCap and after a short while the safety mute relays on the 252 released... and yes my music was back...

Has anybody else noticed anything similar? Or do I need to see a doctor...

Simon

 

Posted on: 09 January 2016 by winkyincanada
DrMark posted:

So I should turn on the HC prior to turning on the back switch on the SN?  I think that is what I do now - the SN back switch is the next to last thing I turn on.  I think the CDP is the very last, although as long as it isn't playing a disc I am not sure if the CDP even matters in the order. (?)

I must schedule an in-person training session in Monza soon!  

Back switch on the SN last of all.

Posted on: 09 January 2016 by sheffieldgraham
winkyincanada posted:
DrMark posted:

What is the significance of first powering up the (or better, a) source Mike?

It's just so that any surges caused by the power-up don't get transmitted to the speakers. Everything else should be on and stable before the power amp is switched on. 

Agreed. Switch on all your sources first

 

Posted on: 09 January 2016 by DrMark

Thanks Winky.

Posted on: 09 January 2016 by KRM

Hi Mark,

Powering up a source when the pre and power amps are on can make a very loud noise which has the potential to damage speakers. Muting the pre and selecting a different input should avoid this.

Hi Simon, 

The repowered system does sound great and I'm very tempted to say it sounds better, but I didn't listen to it immediately prior to switching on and off so I can't entirely rule out the placebo effect. I did it before I read your post, I'm afraid.

Keith

Posted on: 09 January 2016 by Mike-B

Yup its like Winky sez