Run-in/Warm-up

quote:

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"Naim equipment is notorious for requiring lengthy warmup cycles"

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Naim is designed to be left powered up all the time, 24/7
(which, I assume most, if not all, Naimohlic's here do)
so,... I don't really see the problem, to be honest.

regards,
Alco

Ken,

Most of the American top end stuff, (Krell, ML etc) also seem to need long warm up. They usually arrange a 'standby' mode which seems to keep the essential components warm and ready, but they still need about 15 minutes in 'full power mode' before they are ready to use.

I can easily imagine that some makes or types of capacitor need longer than others to perform at their best

Cheers

Don

PS nice to see you're still around ken, how is the system?

so, other hifi is/are equally "notorious".

don, mark... useful reply -- many thanks.

alco??

enjoy

ken

I have heard improvements for up to 12 weeks from new...thats for all kit including cables, though 99% is reached in 4-6 weeks

Laurie S

There is no doubt that Naim equipment has a particularly long burn-in time. I know from personal experience that 4 to 6 weeks isn't unrealistic. But could there also be a physcological aspect to this ? Maybe when you introduce something new it takes the brain a while to become acustomed to this 'new' reproduction of reality and then suddenly it clicks !

When I've been experimenting with acoustic room treatments quite often I'll change or add something and at first I don't like it. But give it a couple of days or a week and it starts to make sense. Surely room treatments don't need to burn-in but its a similar effect.

Allan

In my experience new kit takes 3-5 days to run in from new.

cheers

Nigel

Sorry Nigel but I have to disagree. The new kit takes longer than 3-5 days to run in from new.

My new kit is 11 days old now and its still a long way from being run in. The CD is getting there but the amp still has a long way to go.

Regards

NB

Idle question.

In a completely new system how can you tell one component is run in whilst another is not?

Jay

quote:

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Sorry Nigel but I have to disagree. The new kit takes longer than 3-5 days to run in from new.

My new kit is 11 days old now and its still a long way from being run in. The CD is getting there but the amp still has a long way to go.

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Sorry NB but my new kit took, on each occasion, 3-5 days to run in.

People who say it takes many weeks, or even months, are IMHO deluding themselves.

cheers

Nigel

I can understand you scepticism, but burn in is a fact of life.

I found that the CDS2 took 5 weeks to stabilise and my son noticed the differece as well. The performance was all over the place.

Also the SBL's took a similar time to bed in.

I had the 32.5 and 250 serviced recently and that only took a few days so times do vary.

Regards

Mick

It is
YMMV
there is no point arguing - all of you are correct

Derek

<<Have you checked your PTs today>>

We are all correct because it is a personal issue depending on the sensitivity of our individual hearing

You cannot describe what I hear and I cannot describe what you hear - I can only attempt to describe what I think I hear.

I have my own experience on sound change during burn in / warm up - my wife has her view.

Derek

<<Have you checked your PTs today>>

Naim electronics needs several hundreds of hours to perform it's best.
Naim speakers needs 700-800 hours to get their maximum and that was very audible.
Talk that 4-5 days are enough sounds pretty funny to me.

Ozren

Tony
The burn in time is a mattter of fact for you it may be a matter of fact for a lot of people - but that does not make it a matter of fact for all the population.

The weakest link in the audio process is the state of mind and sensitivity of hearing of the listener.

It is YMMV

I will go along with the statement that the equipment takes a while to stabilise - I have found that after a switch off the systm becomes very sweet and excellent after about two weeks

However that is my own experience I would not want to push it as gospel into some one else

During the inital few hours of the 52 running in from new some of the words I used to describe the experience to my dealer he agreed with.

Any comments that define the time in precise number of hours or days or weeks are personnel comments (some are even based on personnal experience) not universal rules.

Derek

<<Have you checked your PTs today>>

Tony,

You and others have said that that in YOUR system burn-in/warm-up takes a few days at most. Clearly that is a fact based on your collective experiences.

MY cds1 and MY cds2 each took well over 5 WEEKS to burn-in/warm-up from new. When I moved, my cds1 was powered down for a couple of days and took several WEEKS to warm up again. These are facts based on my experience and that of others.

When someone posts asking 'how long will the burn-in/warm-up take' you are going to say a few days, I am going to say a few weeks.

Naim's manual suggests 5 days. Grahams hifi suggests 5 weeks.

Cheers

Don

Stallion......yes

From new, I have found that components take at least 4 weeks to even approach what they will finally sound like. In between, Ihave noticed "ocillations"...the sound swings from bright and thin to dull and heavy, Others have reported similar effects . This topic has caused fierce controversy.

After a component has burned in and then switched off it takes a relatively short time to "warm up"...depending on how long it was "unpowered" for...typically several days

Laurie S

I'm totally with Laurie on this one (again). I think after 5 days there is a big improvement over intial turn on and then a slow down improvement over months.

guys, many thanks for further thoughts. what triggered this posting is that our bedroom is being re-decorated right now and therefore we are using my office wherein my hifi lives, as temp bedroom. over the last few days, i have left my cdsii on autorepeat all night at a low enough volume (fiendishly difficult to achieve with the remote control -- cant make small changes). having done this for about 4 days now, i swear the cdsii sounds a LOT better than it did before. (the played cd does get quite warm...) there was nothing wrong with my cdsii before this, but now its got an extra notch of smoothness and alure. i cant explain this, but speculated that perhaps this units needs a second run/in -- my cdsii is 2001 vintage.

anyway... just a little background.

enjoy

ken

Slightly off-topic (but still related), I've been comparing the difference between an XPS1 and XPS2 on my CDX2. I can describe the difference like this: its like the difference between week 2 and week 3 of the burn-in of the CDX2. Like the difference in opinions here, I can't decide if thats trivial or fundamental

Allan

quote:

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Originally posted by Allan Probin:
... I can't decide if thats trivial or fundamental
Allan

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i contradict myself a lot when i get into this area of "trivial" vs "fundamental". on the one hand, i sometimes argue that these two words suggest some scale in which they lie on opposite sides, in which case "trivial" is not worth paying money for and "fundamental" is. however, i know for a fact that this linear scale is very misleading and i dont use it consistently.

i recall a demo in which i was found myself describing the differences as "trivial" (in the sense of "small") but absolutely fundamental. the sort of change that enhances that "which makes you want to listen to your system" but that you can really describe in any detail.

the change to my cdsii was small, but quite fundamental

i can think of analogies in life, but cant repeat them here.

enjoy


ken

quote:

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the summed total of all the improvements over the years should result in a system that will most certainly not seem to be a minimal improvement over a few years ago, but rather a substantial one

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I found that if I'm ever in doubt it was all worth it, I try and find a CD I haven't listened to since I got into decent hifi (which was not even 4 years ago). Just today I put on an album that I probably last heard on my Technics/JVC/Revox system -- sounded almost like a new and much, much better recording from what I remembered.

Thomas