Review on 🔊 Herdio 3 Inch Waterproof Marine Speakers Full Range Audio Motorcycle Speaker Stereo System with 140 W MAX Power (Pair) for Motorcycle, Boat, Hot tub, UTV, ATV, Golf Carts, Powersports, Car, SPA - Grey. by Jeff Keegan

I've tried 3 sets, each set lasts 4-6 months, after that the speaker baffles become unusable from the water and chemicals in the spa and need to be replaced. Spraying the speaker baffles with waterproofing spray (e.g. clothing and shoes) has been found to make the speaker last longer and the current pair lasts 6+ months. For the price, they're disposable, so it's only happening now. The sound in the spa is quite good for its small size. But the speakers are still not fully waterproof, only lasting 6-8 months in an average hot tub spa.