1. Dust Be Gone
Dust is possible the most destructive enemy of any speaker. It infiltrates your wire connectors where the wire and metal meet, disrupting the electrical signals and adding annoying noise to your system's sound. Not to mention dust can also damage your wiring and ruin the effectiveness of your speaker.
So how do you fight off dust? Regular cleaning using dust pads, dry cloths, air canisters, and vacuum cleaners. Just make sure to avoid damaging the cone drivers or tweeters, and never, EVER, use any liquids.
You can also place your speakers in a room with minimal dust or store them in a protective case when not in use.
2. Heat, Go Away
Another danger to your speakers is heat, which primarily comes from exposure to the sun. If left in direct sunlight, your speakers can overheat and damage the electromagnetic voice coils and totally ruin your sound.
The best way to avoid heat is to keep your speakers away from any windows and avoid direct sunlight. Don't forget to keep your speakers away from any hot areas in your home like fireplaces, heaters, and vents. And if your speaker has vent holes, make sure to keep them free of obstructions.