Abstract: This loudspeaker system overcomes the disadvantages of prior art bipolar loudspeaker systems in which the front and rear-mounted driver(s) are connected with the same electrical phase. It compensates for the undesirable cancellation and reinforcement effects of prior art in bipolar loudspeaker design caused by the interaction of the front and rear acoustical output of the two drivers over certain frequency ranges. The introduction of a third side-mounted driver(s) to an enclosure whose depth exceeds its width when viewed from the front compensates for the usual cancellations and reinforcements of acoustic level that would normally occur in previous bipolar loudspeaker designs. This loudspeaker uses electronic, electrical and acoustical frequency-dividing networks to allow compensation of the acoustic level and the interaction of the front, rear and side-mounted driver(s) in such a way as to provide a nearly constant acoustic level over the entire operating range of the loudspeaker.

Abstract: A low cost, high energy direct circuit to circuit stored energy connector is disclosed. The connector precisely aligns and interconnects conductors of "flexible circuits" directly to mating contacts on printed circuit boards. The connector uses the flexible circuit conductors themselves to aid in alignment and eliminates the need for precise control of the outside dimensions of a flexible circuit's dielectric backplane or a precisely located alignment hole. The connector is a zero insertion force (ZIF) type, and is a high density surface mount. The connector comprises two major components: a connector housing and a circuit interconnection spring assembly. The housing is configured with a device for forming a direct flexible circuit conductor to printed circuit board mating contact interconnection. The circuit is retained in position by a multi-function spring assembly rotatably positionable with respect to the housing.