I would not recommend spiking speakers to a suspended wood floor. That will transmit energy from the speaker to the floor and end up shaking the floor and walls. I can easily hear this with my speakers on a suspended wood floor. And I can fell it as well. The LF energy moves along the floor and shakes the chair. I like the rigidity of spiking, but not what a shaking room does to frequencies.
I found decoupling (with large Herbie audio dots) works better than spiking, but it's still not perfect.
The best I've tried to date is using Nordost Pulsar points. I feel no bass from the floor. It is amazing how much bass can be transmitted to the floor and conversely how you can reduce it significantly. And the sound is very good. I think any product along the lines of bearings in a cup would work well.
Wish I had a concrete pad but I get pretty good results with the Pulsar Points.
I found decoupling (with large Herbie audio dots) works better than spiking, but it's still not perfect.
The best I've tried to date is using Nordost Pulsar points. I feel no bass from the floor. It is amazing how much bass can be transmitted to the floor and conversely how you can reduce it significantly. And the sound is very good. I think any product along the lines of bearings in a cup would work well.
Wish I had a concrete pad but I get pretty good results with the Pulsar Points.