Floor standing speaker isolation advice needed.


I have an older pair of KEF Reference Model Twos that currently sit on their brass(?) feet on the floor. The floor is tile but not solid cement underneath. I bought two .5" thick granite tiles for underneath the speakers and am wondering if I need to do anything else like put the spikes on the brass feet, add sorbothane under the granite tiles and/or under the brass feet or something else I should be considering? Things sound good on the top end but seem a bit subdued/muddy in the bass region. The KEFs are being driven by a Parasound Halo A23 and I’ve got a HSU VTF-3 MK 2 helping out the bass, mostly for movie duty.


Thanks for any advice.
asahitoro

Showing 8 responses by asahitoro

Thanks lowrider,

That was my original plan, .25"-.5" sorbothane discs under the granite tile and the KEFs directly on top, maybe add the spikes to the KEFs feet. Where I lived before I had a solid, cement underneath carpet, floor and used the spikes to couple directly to the floor and it sounded good.

I've read good things about the Herbies stuff before and will look into it further.
Thanks for the replies,

Well I’ve got some various sizes of sorbothane. If I use that or the Herbies, do I put it under the granite tile between it and the floor or directly under the KEFs feet? Should I use spikes on the KEFs feet on top of the granite too if I put the other underneath the granite?
I appreciate the input kalali,

Also, I can put sand in the plinths of my speakers. Overkill or not with the granite tile/sorbothane underneath and possible spikes under KEFs feet?
Thanks ricred,

I'm really not looking to drop that much coin this setup. Trying to do this with $100ish and under stuff I already have or can easily get. If I step out over the sorbothane/granite, it will probably be for something from Herbies.
So I'm looking at the Big Fat Dots or X-Large Fat Dots on Herbie's site and am thinking skip the granite and spikes and just put 8 of these under the KEFs feet?

Thoughts?

Thanks again everyone!
Thanks for the input geoffkait,

I was wondering about Sorbothane, Vibrapods and the various Herbie’s offerings and what materials are being used? I have some 2.5" diameter x .25" high 70 duro sorbothane discs and I also have a bunch of various Vibrapods that I could use under my KEFs feet (which are about 1.75" diameter). Now I’m thinking use the sorbothane discs under the granite tile slabs (which are .4"ish thick) and then the KEFs with spikes installed in the brass feet on top of the granite. Again, it’s a tile holllowish floor underneath. My KEFs sounded really good at my last place with just the spikes through carpet on a solid cement floor.

At any rate I have a bunch of stuff to try and I’m also not against tossing some coin Herbie’s way. One thing about his cone/spike decoupling gliders, and lets face it, aesthetics matter, is that they aren’t too visually appealing for where I’ll be putting them. Also, they may look a little strange as the diameter is much less then the KEFs feet.

Thanks again for the input everyone. :)
I haven’t compared to those but I have some IsoAcoustics Apertas under my KEF LS50 Wireless in my man cave setup. Excellent stands that helped clean things up a bit.

jhills, excellent advice that I’m taking. I have so much stuff already to play around with and if I do spend more, I’ll at least have an idea of what might work best based on materials, application, etc. from experimenting.