Spent an hour and $30 yesterday threading nuts onto 5/8" threaded rod to capture 4 mdf shelves between aluminum fender washers, no neoprene. BIG improvement in soundstage but my favorite female vocals became unlistenable: harsh, edgy, grainy, 1986 $99 cd playerish. Didn't have a bicycle tube handy so I grabbed the thin urethane mat off my workbench that holds small parts in place while I sand them, folded it double and put it under 1995 $200 cd player. Soundstage still excellent, speakers almost disappear and the electronic hash/grain is GONE. Gotta get me one a them tubes.
Sand bags under a cdp - didn't work well
Last night I started the process of vibration control with the use of sand bags (3) under my Arcam cdp. What I found was that while everything became more focused/detailed it also became more sharp/harsh/forward/aggressive. I didn't know what to expect but it certaintly wasn't this. Van Morrison's voice on trk #5 on Sailing to Philadelphia was abnormally aggressive and in the end I preferred the sound without the bags. Any thoughts as to why things became too sharp & aggressive????