How much noise does the gyro make?
The steady state noise of each gyro is measured in our factory test room at distance of 1 meter from the sphere and typically measures 70-75 dB unweighted. This sound pressure level will be 2-3 dB lower on the A scale that is typically used to rate marine machinery noise. The steady state noise is the sound pressure level associated with spinning the flywheel without precession as if you were sitting at the dock or at anchor with very little or no wave motion. As the frequencies emitting the highest sound pressures are low (like other marine machinery), it is recommended that the gyro be installed in a machinery space that is treated with soundproofing. If the gyro stabilizer is located outside a machinery space, soundproofing is required to eliminate low frequency (approximately 160 Hz) noise from entering living spaces.
