I finally got my DT1770 tuned to my preference.
Dekoni leather pads, discs cut from the foam in the Dekoni tuning kit sandwiched between the stock driver cover and the fabric layer of the pads and a plastic disc with a small hole in it to close off a good part of each bass port but still with some porting to let them breath.
The bass quantity can be tuned with small changes in the effective size of the covered bass port. Of course a bit of tape can be used to experiment with the bass port opening but I wanted a more elegant long term solution hence the plastic discs.
To me this is as well balanced as I have heard the DT1770. The bass is there but not boomy and bloated, the treble is crisp and detailed without any sibilance or harshness.
A new Forza Audioworks cable tops them off after about a year of on and off meddling to get the sound right.
Listening to them on Asgard 3 as I type, really enjoying them. I have spent more money on pads than the headphones are worth but they finally deserve a spot in my small collection. Also a good learning experience as to what effects the sound.
