Try turning the speaker bass cabinet so that it faces forward, this should lessen the bass that disturbs the neighbors.
Also, I know what you are talking about, I had to remake my cables after buying the Parsifals. I remember them sounding so great at the dealers, and when I got them home I was surprised that they sounded so dark. I too had been using darker sounding cables. I called the dealer, and he was using silver cables, which I had never cared for the sound of silver before. I bought some silver cables, and surprisingly, the Parsifals sounded like magic again. Thus learning my lesson that all cables can sound right with the right gear.
Also, I know what you are talking about, I had to remake my cables after buying the Parsifals. I remember them sounding so great at the dealers, and when I got them home I was surprised that they sounded so dark. I too had been using darker sounding cables. I called the dealer, and he was using silver cables, which I had never cared for the sound of silver before. I bought some silver cables, and surprisingly, the Parsifals sounded like magic again. Thus learning my lesson that all cables can sound right with the right gear.