Abstract: A system and methods for implementing substantially triangular or trapezoidal speaker enclosures and related components. A speaker enclosure may be shaped substantially as an equilateral triangle, loaded with three speakers mounted radially equidistant from the planar center of the triangular enclosure. The speaker enclosure may comprise a triangular port with a detachable lid. A speaker enclosure also may be shaped substantially as a box with an interior triangular subchamber. The speaker enclosures may further include an amplifier system having a novel input gain stage or a novel tone stack, or both. An amplifier system also may comprise parallel audio input processing through input gain modules and tone stack modules, with the separate audio signals summed by a novel mixdown module.