Guardi

You can't see it on the picture clearly, but there are actually 2 hollow pipes, a big one and a small one. The big one is where the cable runs through. Sand won't be a good idea there because it has a hole in the bottom - for the cable. But I was thinking to fill them with pebbles (small stones).

thanks! I've turned them (was still busy setting them up), maybe I'll leave them not screwed to the stand.

Hello, I've got a pair of RP-502S, each on a speaker stand. Now I'm thinking of screwing them to the stand for that extra secure feeling that they won't tip off. The stands have holes in the top-plate so it's possible to insert 2 screws from below. But, is that considered good practice ? If so, until how many millimeters is it save to drill a hole for the screw ? Any help is greatly appreciated, thanks.