The term "sweet spot" in audio refers to the area in which the listener can move their head without experiencing large changes in the character of the sound. 

Generally, the larger the sweet spot the better but for some loudspeakers, like large planars (electrostatics and ribbon panels), the sweet spot can be extremely small, often referred to as "head-in-a-vice" listening. This is because one small movement from the ideal listening position (and all rooms and loudspeaker setups have an ideal spot) yields a dramatically different sound. This is disconcerting and it also limits the high quality listening area to one person. 

Newform's wide dispersion Ribbon speakers produce a large sweet spot that typically can accommodate 3 listeners on a couch. This is one of the reasons very few of our customers feel the need to use a center channel speaker for either home theater or music. 

With our new Coaxial Ribbon LineSource speaker technology (patent applied for) the sweetspot has grown even larger. No loudspeaker technology offers the room coverage of this breakthrough innovation. The room reflections and modes are minimized so there is far less soundwave interference to generate uneven response and the coverage becomes very even over a large area. Very few rooms will require more than 4 loudspeakers for home theater i.e. 4.1 is the no-compromise solution. (The .1 is the subwoofer.) 

Bottom line - easier audio system setup with or without room correction, fewer speakers, more relaxed listening, higher fidelity, more musical experience.

1. HEAD IN A VICE SWEET SPOT

2. NEWFORM TYPICAL SWEET SPOT

3. NEWFORM COAXIAL RIBBON LINESOURCE SWEET SPOT

There will always be only one best spot, but a large sweet spot allows the listener(s) to move around the listening area with very small changes in timbre and soundstage stablility