 Amplifiers, record players, tape players, and tuners were fairly faithful to the original sound, but speakers of the time were unable to reproduce the bass notes of records or tapes without distortion.He came up with the idea for a new form of audio loudspeaker, one that would greatly reduce distortion by replacing the nonlinear mechanical spring with a linear air cushion.This "acoustic suspension" design demonstrated a greater undistorted SPL (sound pressure level) at 25 Hz than any previous loudspeaker type, including bass reflex, infinite baffle, or large horn designs.