Innovations

A compact and as thin as possible form factor is the mainstream of designing current laptops. That causes traditional round-shape speakers, which are limited by the diameter (i.e., length and width), not to be satisfied with state-of-the-art laptops. So, almost all loudspeaker designs for laptops have rectangular shapes to enlarge the vibrating area under a compact and limited space, and the longer, narrower, and thinner dimensions are the direction for future developments.

The side effects of rectangular speakers with a high length-to-width ratio are that some components increase the costs and cannot be manufactured if the ratio reaches too high. For instance, two- and multiple-motor (voice coil) designs increase the costs because the longer coil can't be manufactured at a reasonable yield rate.
There is a solution for current laptop speakers. The voice coil, made by FPC (Flexible Printed Circuit), has fewer limitations for speakers with a high length-to-width ratio.

The speaker, which has an FPC voice coil, should be designed with a proper magnetic circuit and structure; it's easy to develop the relatively longer and narrower loudspeakers, which are rectangular shapes.

The currently traditional two-motor (voice coils) design for laptop and tablet speakers.

The speaker's architecture, which is designed with an FPC (Flexible Printed Circuit) voice coil, makes it easy to develop a rectangular shape that is as narrow as possible.

BuildiIt is a building simulation

model to see how it works and sounds.

The simulated frequency response and impedance curve of the speaker, which has a dimension of length of 50 millimeters, width of 4.5 millimeters, and height of 12 millimeters, is integrated with a five-cubic-centimeter closed box at the conditions of one-watt driving power and 0.5 meters receiving distance.