I looked around and found a few people had mentioned modding these cans in other threads, but didn't find a thread specific to modding the M80's so I thought I'd start one myself. I really enjoy the V-Moda M80 headphones. For their price they're comfortable and sound pretty good. I've thought about modding these cans for a while now, but like I said haven't found a whole lot of information....so I decided to wing it. I should mention I have a moon audio blue dragon V3 on the way for these cans as well .
When I purchased mine one of the ear pads was a little 'crooked'. I lived with it for a few months and then finally decided I had to fix it. The pads just pull off and the leather pad was easy to align with the plastic bezel underneath. Then curiosity struck...and I removed the 4 screws holding the driver in. Its a pretty basic housing. It looks like V-moda has some sort of damping material on the back of the driver. There's also a piece of felt (not viewable in the picture) that covers the vent. The driver seemed to be pretty well sealed to the housing when I removed it.
My main complaints with the M80 are the echo sound it has and also a lack of 'growl' on bass guitars. I'm not really sure how to describe the bass growl I feel they lack, but if you play bass I'm sure you know. Since I've never modded headphones I figured I'd just try a few things and hear what I get.
I just so happened to have a few square feet of dynamat xtreme sitting around so I made two pea size balls with its backing. Since I was doing each side separately (only taking one apart at a time) I wanted to make them at the same time. Using the existing factory damping I pressed mine on top of it and used it as a template. I think this helped a lot in putting it on each driver in the same place and thickness.
Then I added some speaker stuffing (not really sure what this is called) into the back of the driver housing. Again I made to similar size balls beforehand so that I'd add the same amount to each driver.
After this I replaced the 4 flat head screws re-attaching the driver to the housing. I then added a bit more dynamat to the outside of the housing between the plastic and aluminum panels. I thought this might help in removing some of the echo and reverberation from the housing. Re-attached the panels and gave a listen.
Not sure if this really helped much. Tapping on the back of the housing it now has a more thuddy sound though. So they sound much more refined then before. I'd call them more balanced. I lost a little of the low-end bass (I guess what would be described as sub-bass), but overall the bass sound quality has improved. I got a little more of the bass guitar growl that I was looking for, but would still like more if I could figure out how to get it. Cymbals have a bit more shimmer to them after modding, but again they're not as pronounced and in your face. Response time has improved it seems and I lost a lot of the echo sound these things had before. I'm not sure if putting the speaker stuffing in the cans was such a good idea. I don't want to interrupt the function of the vent..I assume its there for a reason. After I get the moon audio cable I think I'll attempt to re-cable the internals with some better wire since it looks like a pretty easy task.
Any advice, input, etc for how I might have messed up or what else I might do to these cans will be appreciated.