[Jeff]

I was enjoying my HD600s very much... that is until I wanted to tweak them

First, off comes the foam-ish layer that rests between your ear and the driver. "It'll muffel the sound" I thought. There was VERY little, if any, difference. Maybe a tad 'faster'.
I soon discovered that there is another layer of material inbetween the driver and the foam. This time it was a very dense screen-type cloth. It sounded like a nylon twill when you scratch your finger nail on it. One more layer to kill sound! This time, I was wrong

It appears that it acts as a diaphragm. Without, the HD600 drivers are just shrill; no bass or midrange. It is a must for these headphones to have this layer in order to give it their trademark warm sound.

Here's an image of the HD600 drivers in their natural habitat:
http://www.t-one.net/~jeffb/HD6001.jpg

I will contact Sennheiser USA to see if it's possible to get new nylon(?) 'diaphragms'. I'm sure hope I can

I just wanted to warn the tweakers out there.

JeffB

 

[ai0tron]

Dude, seriously, WHY DID YOU DO THAT!!! Thanks for the warning although I really wouldn't have concieved of mutilating those wonderful headphones.

 

[KR...]

The only question I want to ask is, did you use a butterknife?

 

[dngl]

No offense, but that's pretty funny.

I don't like taking off the cloth pad. It exaggerates certain frequencies. I used a RatShack sound pressure meter: taking the cloth off hurts the accuracy and makes them more fatiguing.

 

[Jeff]

I had the HD600s for about a year, so I just wanted to see if it was possible to change the sound. It is

Today I talk to Senn USA!

 

[chadbang]

You're a brave man, jeff. Personally, I'm not gonna mess with perfection.

 

[dngl]

Hey, it was worth a shot. The CD1700s sound like crap before mods compared to how they sound after modification.