thanhs this is actualy helpfull
But this makes the game even more expensive if I have t beleave that the spx 800 is suposed to be connected to gear delivering max 200W....
AMS need officialy 300 something an is mesured at more than 400W.....
Denon 1911/B&W 683, 685, HTM61, ASW610XP/Ps3, WII, X box 360
AMS 35i/Cambridge Azure 650 cd/Squeezox touch/Clear audio Champion lmtd edition with MC Simphony II cardrige/Okki NoKKi Record cleaning machine/M1 Vinl Phono stage/Audioquest 'Golden gate' rca's/Avalon Ascendent (A ha s/c test)
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 the ingrained bass boom were 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.
EDIT. One last thought, make sure the screws holding in the drivers to the cabinet haven't come loose.....be careful and don't over-tighten
"Everything has been said before, but since nobody listens we have to keep going back and beginning all over again." André Gide
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.
The TT now sits on top of a very well built FInite Element rack were each floor is decoupled from the rest. I also added some high-end ceramic feet which help decoupling the all rack even better. Next week I will try to move the speakers much further to see if speaker waves are in any way responsible of interfering with the TT...but don't think so.
With Guarneri memento I cannot use any stands nor isolations spikes as the marble is part of the stand already. I could use only isolation platform. But again I would wonder if adding another layer would help anyhow as already the marble is quite thick.
Francis has in stock some symposium platforms (http://www.symposiumusa.com/ultra.html) which I could try. But those, as you can imagine, are quite expensive. I might try them just to make sure the problem is coming from there or not...
Is your listeninig seat more into the room now? Or are you sitting on the sofa, back to the wall?
PS: Felice anno nuovo!
Firstly, I would see the effect that Rob's efforts have for him, which might shed some light.
Secondly, if you can get hold of BR, check the effect it has in various places.....you might also try and get something like a thin sorbothane sheet, to go between the marble and the floor.
The third option is acoustic treatment, which doesn't make sense in a temporary house, unless with plants, rugs and moving listening position etc
Erik, I still have the sofa on the wall (nothing can be done at this regard) but I pull now a chair whenever I am listening. I have also added a carpet in front of the system and got rid of the glass table which will be replaced with a wooden one.
Felice anno nuovo anche a te!
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