This summer I brought my dMar-Kel70T to the local hifi-store to try them with better amplifiers but also to let the store owner have a listen to them.
|My dMar-Kel70T next to some Dali and B&W speakers at the local hifi-store|
The store owner, who has probably been in the audio business since before I was born, thought they had a "nasal" tone and I do agree with him. Without some sort of EQ they can be a bit too nasal. At home I use a MiniDSP to control that and it makes a massive difference, bringing them from sounding like a pair of $500 speakers to >$1000. One suggestion he gave me was to dampen the driver frame and bezel. Since they are a lightweight plastic they do ring quite a bit at certain frequencies, which surely has a negative impact on the sound.
I did some googling and found this thread at the diyaudio.com forums. None of the materials suggested there were easily available (or cheap enough) for me. I did some research and found that blu tack would probably suit my needs. It sticks well, is easy to shape, has a high density (around 1.8g/cm^3), sticks to things, and isn't crazy expensive for the amounts that I would need. I bought two packets for 29SEK each (~$3.50/ea). Each pack has six strips each weighing 10g.
|The drivers before my mod.|
Note that these have already been partly modified by Dave at Planet_10 hifi
|Side view of inishedd driver|
|Top view of finished driver|
Was this mod worth my time and money? I don't know, but why not? At least I can now have peace of mind knowing that I have done what I can to address the problem.