They only sound "decent" with the Bose EQ- in your case probably in the tape loop. I think the EQ adds up to 18 db of gain in both bass and treble...you really have to use it.
Bose 901 VI flat?
I purchased a pair of Bose 901 VI speakers recently and a new Sony STRDH190 receiver. I have wanted these speakers for years and finally got them. Problem is, they sound flat and weaker than expected. I adjusted the bass and treble to my liking but that only helped a little. I have the Bose EQ that came with the speakers but i'm not using it due to new receiver technology. Am i doing something wrong? I know these are great speakers with a great history.