hardwood floors and spikes

Cone coasters by Sound Anchor. Nice looking stainless, with a small divot for the spike and stuff on the bottom so you can slide them around easily when you need to.

Depending how heavy your speakers are and how hard and pointy your spikes are they can go through a thin piece of metal like a penny.

Tell ya what you do...

Find the precise location that you want your speakers, make sure you lift them and set them down, you dont want to scuff your floor.

Then once they are in the perfect spot, take out a hammer and wildly start pounding on the top of your speaker(this is especially fun with martin logans) This will gently nudge your spikes into the hardwood floor and make sure that they do not move around and scratch the surface.

Slappity Slap!

Audiogon member "esoler" can make you some beautiful discs of whatever metal you want with a dimple to accomodate those points and protect your floors. Ace Hardware sells thick felt with an adhesive backing which you can cut and stick onto the floor side of the disc if you prefer.

Meech & Herman:

Yes, sharp spikes will go through pennies (often within a matter of a few months).

A friend of mine ended up using the pop out slugs from electrical boxes which were scattered throughout the house following a re-wire (two per spike) and with these the spikes went through the first (top) one within a year's time, but after making a dimple in the second/bottom slug they stopped moving.

He eventually replaced them with little discs purchased @ Audio Advisor (probably the ones mentioned above) as he needed a bunch for a new audio/vidio rack that has eight legs, but the slugs worked fine.

His speakers weight approx. 100 lbs each and the rack/gear @ least 200-300 lbs.

With nice new floors @ stake (even though I'm a cheapskate) I would pop for something designed with the application in mind.