I have finally bought some plasticine to fill in the baffles. This is the result after filling every compartments with plasticine.
I also filled the rim of the cups and on the baffle to produce a much better seal. Because I couldn't find acoustic foam such as Acoustipack or Silverstone Foam yet, I filled it with cotton pads to reduce resonances and reverberations.
It really does improve the sound a lot! Here are my impressions:
The bass is finally tight now with lots of impact and texture. It has a lot of tactility and can keep up very well during very fast parts. Upper mids are now less recessed which makes vocals sound meaty and thick and snare drums has the timbre and tonality of a real snare drum (before it sounded more like tambourines). Treble is more present but more in the 9000Hz to 10kHz region because there is a bit more sibilance on the vocals.
Things that I didn't like very much is that the vocals aren't really as forward as I want it to be, they still are very much recessed. Also, even though the the treble is more present, it is now more sibilant which can be a bit annoying. I would also like to have more mids and upper mids.
Now the next step is pretty much cosmetic, I will paint the hangers to matt black. Any tips? I will be using aerosol paint. Should I sand it first? Or is there no need to?
This is how it looks now:
Edited by VortexBlast - 4/7/13 at 5:32am