Better yet: remember to check the manual for your specific speakers to see what the manufacturer recommends as far as placement and positioning. You may find something that you like better, but chances are the speakers will perform best somewhere close to what the manufacturer recommends. At the very least, it’s a good starting point.
There have been plenty of news reports on this for many years. Lithium-ion battery failures are nothing new and everyone should be aware that they can happen. There’s plenty of videos of exploding vapes, e-scooters, etc. They are rare, but they do happen. They’re more likely to happen with very cheap products or with very cheap chargers (the chargers are a bit less likely because a good product should have over voltage and over current protection…or at least over current. These can happen from physical damage, shorts, manufacturing defects, water damage, etc.
Keep in-mind that the vast majority of consumer electronics with lithium ion batteries have off-the-shelf batteries that are not made by the brand of the actual device.
No brand is immune to this. Again, you don’t typically need to worry, especially when buying decent-quality electronics, but everyone should be aware that this can happen.
Source: test engineer for a major gaming peripherals brand. I’ve seen a few of these myself on extremely rare occasion (they are treated extremely seriously as you can imagine).
You can get speaker stands that also isolate or dampen (most good ones do). Check out IsoAcoustics products if you want to find some great isolation options.
This isn’t just about stopping vibrations from reaching your turntable. Loudspeakers perform better when properly isolated. When the vibrations from your speaker cabinets transfer into furniture, it actually muddies up the sound a bit. This is why you’ll will pretty much always see monitors on isolation stands or pads in professional studios, where accuracy really matters.