Being a previous owner of the Sony WM-40, I thought it somewhat interesting to here the comments and impressions of the DLS 10" sub from Parts Express. It sounds like it could be a very good entry level sub or possibly a bit more?-- So I went ahead and ordered it. I live here in Oregon so shipping will be at the extreme.- $31 to ship. I would say the average to be about $20 to ship. So that would put the DLS sub to your door for $120 I would think? I would not expect the DLS to compete with what I have now but I do have a entry level Kenwood sub stashed away I could compare it to and the WM-40 I sold to a friend, I would have access to for he only lives a mile away. We would be able to swap so I could put the meter and ear to it. I remember quit well how the WM-40 did for me though. I thought it to be a "good performer for $135". From looking back over my post I have to wondering with the demands on my time and two teenage children and a wife what am I doing playing with speakers-subs like this?