In our Open Float Pool we recommend two transducers, one at head and one at feet. When ordering be sure to let us know you want audio and we will install the speaker plates in the fiberglass for optimal sound transference.
For retrofitting float tanks we recommend one or two transducers, mounted right at water level at the back of the tank. This is easily accomplished on Samadhi, Escape Pod, and Oasis float tanks.
All speaker types require an amplifier for operation.