Adding a Base to Floorstanding Speakers


I use floor standing speakers on spikes on carpetted wooden floor.

I am thinking of adding a heavy concrete slab as a base for each speaker to reduce the floor vibration. Would this excercise be of any benefit to the overall speaker performence? Should the speakers still be on spikes if they are placed on concrete slabs? Any advice would be greatly appreciated.
128x128sxu1

Showing 1 response by shasta

Uh, Sxu1, I don't see any upside to what you propose. I'm currently going through the same adjustments. Having lived w/spiked speakers since '96, it's now clear to me that, IME, spikes are the work of the devil in my system.

Suspended wood floor, old CWD oak rack on casters, tired old vibrapods, and that's it. Whim strikes, remove the spikes. Right in the face, the sound becomes instantly and *very noticeable (adjective alert) faster, livelier, and quicker. Quickly realize that the spikes dump loads of bass energy into the entire floor structure (and the rooms below), up the rack structure and into the equipment; time-delayed, of course. Resulted in a draggy, sluggish sound. It nearly brought me to tears, realizing the wasted *years* in listening to sub-par sound.

Concurently was researching alternatives to spikes, talk to a manufacturer of multi-material sandwiches for equipment and specifically for de-clawed speakers, and order a trial pair. In order to optimize contact between the speaker base - which consisted of a square ring of 1" W. MDF which held the nuts for the spikes - I had a cabinetmaker mill up a pair of 1.5" thick Hard Maple blocks w/ 1" corner radii, about 10" x 11" to compensate for the spike height, plus some. Also adds some serious mass to the speaker bottom. Removed the little toy square ring, glued and screwed the maple blocks to the speaker bottoms w/ stainless deck screws. The sandwiches arrived, resulting in an obvious clean-up from low mids through the entire top end.

Sxu1, for free and with no effort, de-claw your speakers and listen for a bit...

They say spikes have some uses; maybe. My first experience was original aluminum tip-toes under a VCR with very positive results. I think speaker spikes are a manufacturer knee-jerk reaction to perceived market desires; they "look" audiophile.

The speaks are model year '96 Alon II originals. I'm a tweak skeptic, but I'm willing to try. Don't do testimonials for mfgr's websites. The sandwiches are symposium sveltes, and they are not going back. Symposium is prohibited from lifting this post as a testimonial.