acalex said:
During our listening session with ROb yesterday we were wondering if there is a way to understand where the bass booming might come from, if floor or indeed acoustic of the room. The problem is much less evident using the digital source, but is more evident using the turntable especially with some specific recordings. Siltech cabling improved a lot but still every now and then I hear that.
Now my speakers have a thick layer of marble built in the stand which I guess would be enough to separate the speakers from the floor. Indeed when I touch the marble I can feel a lot of vibrations, whilst when I touch the floor just in front of speaker the vibrations are almost zero. Does this mean the problem is limited to the acoustic?
When sitting in my listening position I also feel almost not vibrations coming from the floor...
IMO. Wooden floors are lethal, and TTs are problematical.....and the floor can effect the TT as well as the bass.....it's a vicious circle.
The first thing to do is negate the effect of the floor as much as possible......which the Gramma / Granite platform trimmed with wood should help with. As I mentioned earlier, Track Audio make very effective, elegant and very expensive isolation solutions: http://www.trackaudio.co.uk/
The other company that makes effective isolation is Townsend Audio: http://www.townshendaudio.com/ (Products -> Vibration Isolation)
Once the speakers are sorted, then its the turn of the TT (pun intended!). There is a guy I know whose system was in the loft space of the house, and the only thing that sorted it was the Track Audio Stands.
Do you have the same track on CD and Vinyl, where the Vinyl has boom and the CD doesn't............remember, the TT being better than the CDP, may be generating more bass anyway, but this is likely to be the smallest contributing factor.