Yesterday I was finally succesful at a relatively easy and reproducable way of preparing 560 earpads for the 540's. Quite fulfilling. It's just basics here, nothing fancy. For some it will be nothing new but for some it will come in handy in their own experiments. I cut up two older 560 pairs before I felt some confidence to work on brand new pads. This method allows no way around disassembling at least one driver from it's housing. Reason is that I wanted to cut away about 60% of the plastic edge that holds the stock ring. The driver part (in my hand in the first picture) proved to be exact the right measuring tool for it. I hope the pictures will help clarifying. We start at already disassembled..
Place the driver part onto the backside of the new pad and lightly press them until they snap together.
Once snapped together grab a pencil and start marking at the utmost right edge. Note the pin to the right of the pencil.
Now work your way around in a full 360.
If the above wasn't clear then the outcome should be. It'll look something like this.
Like I said, I wanted to have the marking around 60% of the total space to allow for as easy as possible ring 'out-in' and also to save enough material to secure the new ring.
We be doin' some cuttin'.
I said to my hesitant self: ''Well, there's only one way to find out''.
Tip: try to cut without ever lifting the knife. The result will be neater and there is only minimal sharp edges.
Done did job
My previous experiments had convinced me that I needed to cut some 'slots' of about an inch. To me, four of them was the logical number.
Once done it allows for easier placing of the 540 ring and easier/neater result when cutting through the stock ring which is shown in the next picture.
The least desirable act with a less than ideal tool. It wasn't sharp and didn't have long enough a nose but by gentle accurate work you'll cut through or (if lucky) break the stock ring.
Be extra careful here as it's easy to go overboard on force and impatience which could mess up the pad a bit. Breathe in breathe out.
Stock ring out? Good job.
Here I recommend setting the 'slots' upright and also the area left and right of it. This allows easier 540 ring placement.
Don't think that after the above work it will go in by itself. No. It will take a little more left and right, in and out, some bending, some squeezing and probably cursing before you're there.
Once you're there, do me a favour and bend back the remaining 40% plastic edge. You now have brand new earpads ready for your tremendous 540's.
Edited by moriez - 6/7/14 at 9:48am