The Sierra, Classic and Palos Verdes stones are the smallest rock formations that we make. These models are available with a choice of three loudspeaker systems rated below as good, better and best selection based on sound system quality and performance.

Choice of Loudspeaker System

Best (Commercial)
250 Watt / 6-1/2” Two-Way 8 ohms commercial model rated best in overall high fidelity performance. For use in theme parks and where large wide area's of sound coverage is needed.

Sensitivity 91 db spl 1 watt / 1 meter
Freq. Response 55hz - 20 khz +/- 3db

Better (Standard)
125 Watt / 6-1/2” Two-Way 8 ohms better for small & medium sized areas including pools, spas and tennis courts.

Sensitivity 89 db spl 1 watt / 1 meter
Freq. Response 55hz - 20 khz +/- 3db

Good (Jr. or Industrial)
100 Watt / 6-1/2” Duo Cone 8 ohms good performance for pools, spas, small gardens, yards & patios, balconies.

Sensitivity 89 db spl 1 watt / 1 meter
Freq. Response 65hz - 70 khz +/- 3db

River Rock Omni Surround
Dual 6.5” speakers
360 degree dispersion
Shown in River Rock Gray
21x19x9.5 inches

Our exclusive loudspeaker design uses dual spider woofers found only in the most expensive professional loudspeakers. Along with ferrifluid cooling technology, we use santoprene weather resistant surround suspension and the latest poly mica cone materials. This permits greater power handling with lower distortion. We also include auto reset overpower protection.