Denon AH-D1000 Seriously annoying clunk when walking

[Beyerfan70]

Just got myself a pair of these on a day out today,unpacked them on the train home and was really enjoying them and felt really good about my purchase,until i walked home!
Clunk Clunk Clunk,on the right hand side,not sure if it was a loose headband so i tightened it up a little but still the same noise.
So annoying because they sound lovely but that Clunk,god its annoying.
Great for home use but not moving about
Now i dont feel as good about them as i first did.
Has anyone else had or know about this problem?

 

[Svjat]

Nope, man. There is no such problem in mine. Besides I often use it as a mobile device.

 

[wnmnkh]

Not on left side? If so, your headphones have some problem. Maybe return for another one?