Denon purchase, run-in?

gripchimp

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Good Morning :)

Having GREATLY helped in the past, I wonder if I dare pick your combined brains again?

Have purchased a Denon DM41 DAB Micro DAB CD FM system for someone as a gift, and would like to run it in for them

if possible. I don't want to speak to a dealer, its usually painful :)

Could you advise the kind of run-in time I'm going to need, please and thank you.
 

Andrewjvt

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Jun 18, 2014
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gripchimp said:
Good Morning :)

Having GREATLY helped in the past, I wonder if I dare pick your combined brains again?

Have purchased a Denon DM41 DAB Micro DAB CD FM system for someone as a gift, and would like to run it in for them 

if possible.  I don't want to speak to a dealer, its usually painful :)

Could you advise the kind of run-in time I'm going to need, please and thank you.

 

 

 

Is absolute b s so don't waste your time.
If you do believe in run in regardless then please also change the oil after 100 hours.
 

MajorFubar

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Some people believe certain solid state components only operate properly after having been switched on for a while from cold, same as valves/tubes. I really can't see that being the case in 2018, least not any component likely to be used in a mass-market microsystem. Maybe there's some lifesupport system or iron lung out there which mustn't be used until it's been switched on for an hour because its readings might be 0.00001% wrong. It certainly doesn't apply to mass-produced hifi.
 

Samd

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I would have certainly opened the box and its insulation; let it air out any condensation and then run it just to check you haven't got a 'dead on arrival' package.
 

woodbino

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Yes, agree with the above posts. "running in" is a load of rubbish on solid state devices. It makes absolutely no sense at all and is not needed.

Nice unit though. I'm sure your friend will be really pleased.
 

MajorFubar

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Then again if you're talking about speakers not electronics, some drivers (usually huge bass speakers) can take a while to soften-up their suspension and surrounds from brand new. So as usual there is a modicum of truth in something that's otherwise 99% myth, in so far as some specific things benefit from being 'run in'. But if anyone tells you eg a CD player sounds better after 48-72 hours continuous running to 'burn in' the electronics, just smile and humour them.

Good advice about at least opening it up and testing it though, I hadn't thought of that.
 

cs2011

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MajorFubar said:
Then again if you're talking about speakers not electronics, some drivers (usually huge bass speakers) can take a while to soften-up their suspension and surrounds from brand new.

That's correct.

The suspensions (spiders) of all woofers will loosen up within the first couple of hours of use. If you measure the T/S parameters of a woofer straight out of the box, then again after 2 hours 'break-in', the resonant frequency will have dropped by typically 5%, but hardly at all after that.
 

woodbino

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MajorFubar said:
Then again if you're talking about speakers not electronics, some drivers (usually huge bass speakers) can take a while to soften-up their suspension and surrounds from brand new. So as usual there is a modicum of truth in something that's otherwise 99% myth, in so far as some specific things benefit from being 'run in'. But if anyone tells you eg a CD player sounds better after 48-72 hours continuous running to 'burn in' the electronics, just smile and humour them.

Good advice about at least opening it up and testing it though, I hadn't thought of that.

Good point, I didn't think about the speakers. But I guess if the speakers needed breaking in, the manual should tell you?

Having a read of this, it seems break in only takes about 10 seconds or so, and probably occured during testing at the factory...

https://www.audioholics.com/loudspeaker-design/speaker-break-in-fact-or-fiction
 

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