The wisdom seriesThe ultimate in high quality sound Line Source Wisdom LS4i Wisdom LS3i Wisdom LS4 Wisdom LS3m Wisdom LS4m The Wisdom Series LS4i is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction. The Wisdom Series LS3i is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction. The Wisdom Series LS4 is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction. The Wisdom Series LS3m is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction. The Wisdom Series LS4m is the latest planar magnetic thin-film technology and represents an uncompromised engineering effort to achieve the ultimate in music and film sound reproduction.