The Sound Spa is a mass-produced device designed to create 6 soothing sounds to help people relax or go to sleep. So I amplified it, added a speed control and 2 adjustable feedback loops, and switched out the internal 2.5″ speaker for a custom speaker cabinet with a 10″, two 4″s, and the original 2.5″ speaker.
Modified Homedics Sound Spa
