You're not alone. Both my wife and myself have a very difficult time understanding the dialogue in Daredevil. Not all the time, but Matt, Elektra, and Karen do a lot of soft-talking (they're Soft Talkers!). Turn up the dialogue to hear-able levels, and the music/FX will blow you out of the room. This isn't uncommon with a ton of current shows. There are other discussions here about the way dialogue level mixes are getting horrible in various shows, and I put Daredevil into that category.