For those who don't know, the Grado 'grattle' occurs when a 'hair' gets caught in the right or left headphone chamber resulting in something that sounds like in one of the drivers, sometime made most prominent by bass activity.
Recently a 'grattle' appeared in the right driver/chamber of my Grado RS-1 headphones. I tried 'blowing' on it - not wanting to blow to hard and damage anything. It went away for 30 seconds or so and came back. Not wanting to pay $100 to have maintenance done, I emailed Grado and asked them how to fix this.
They told me:
This worked like a charm for me. For future reference, I thought I'd share this (though many of you probably already knew this solution.) Very thankful I didn't need to send in my RS-1's / nothing was wrong with them.
Edited by cruizin caleb - 6/18/10 at 3:35pm