MartinLogan Monolith loudspeaker
Most Stereophile readers are aware by now of why the full-range electrostatic should, in theory, be the ideal transducer. (If you aren't aware, see the accompanying sidebar.) Acoustat was the first manufacturer to design a full-range electrostatic that was so indestructible it came with a lifetime warranty. (MartinLogan is now offering a three-year warranty on their speakers, and is considering going to a lifetime warranty). But Acoustat was never able to solve another problem that has plagued all flat-panel speakers: treble beaming.