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K701 burn in trick? |
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bmbrown911
Regular Joined: 16 Apr 2009 Status: Offline Points: 70 |
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Posted: 14 Jul 2010 at 6:09am |
I've seen on here in one post that graham did something when burning in the K701s that had to do with a radiator or something. Can graham or someone else elaborate?
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Graham Slee
Admin Group Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
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I placed them above a hot radiator - not on the radiator though and don't get the headphones too hot to touch or they may be damaged.
When I got the HD800 a few weeks ago the weather was quite hot so I placed them on the dashboard of my wife's car (don't do this if you park on a public road!!!) and that was just about as warm as I dare take them. A few hours of warmth will let the plastic diaphragm (and other moving parts or even earpads) "relax" as there will always be moulding and manufacturing stresses introduced in such parts. Anyway, it seems to work. I first tried this on the HD250 II and it helped greatly improve their performance quickly. I had previously tried the usual burn-in tip of playing a constantly looping source to them but it didn't seem to do much all that quickly. Edited by Graham Slee - 14 Jul 2010 at 8:03pm |
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bmbrown911
Regular Joined: 16 Apr 2009 Status: Offline Points: 70 |
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How long did you do this for exactly?
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oldagetraveller
Senior Member Joined: 23 Nov 2009 Location: The Moorlands Status: Offline Points: 367 |
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Graham offered similar advice to me recently, but an airing cupboard was recommended then along with near a domestic heating radiator.
I placed my new headphones in an airing cupboard overnight and I think I noticed a difference for the better. Clarification for non U.K. members if the term is not familiar - an airing cupboard is the space where a domestic hot water cylinder is located, usually with shelves above to store towels etc. |
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bmbrown911
Regular Joined: 16 Apr 2009 Status: Offline Points: 70 |
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So basically just anywhere that puts out a lot of heat then. Will have to give this a try. Thanks!
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Graham Slee
Admin Group Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
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The test houses (such as IEC, CSA, UL, BS) reckon on 40 degrees being the max test temperature on many domestic items, therefore I'd not exceed that.
As for the amount of exposure to warmth I can only say: as long as it takes to obtain a noticeable improvement. With a pair of Canford DMH285's I got a few months ago nothing has happened yet, but with steel cables I think I need to do a rewire... |
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That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
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John Willett
New Member Joined: 29 Jun 2011 Location: Oxfordshire, UK Status: Offline Points: 16 |
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Interesting - I have never heard of the radiator trick.
The designer of the HD 800 recommended running them for 48-hours with pink noise at a normal listening level (just put them over the box, don't stretch the headband). It's to do with the glue settling in to it's final position he told me. I hear that the K701 need 500 hours plus, though. I hear they sound pretty horrible new, but sound great as they burn in. |
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