Abstract: The invention is a variable damping circuit for a loudspeaker that provides for frequency dependent control of a loudspeaker by an amplifier. The variable damping circuit includes an amplifier, at least one loudspeaker, a pair of connectors between the amplifier and the loudspeaker, and a reactive component wired in parallel with a resistor connected to one of the pair of connectors between the amplifier and loudspeaker, wherein the resistance value of the reactive component and resistor does not exceed fifty percent of a resistance value of the loudspeaker. The reactive component may be a coil, a capacitor, or both a coil and a capacitor both of which are connected in parallel with the resistor.

Abstract: The invention is a memory card protective carrier for carrying memory cards and for protecting data transfer ports of the cards. The carrier includes a back frame secured adjacent a front frame having at least one memory card sleeve between the back and front frames. The card sleeve includes a top strut opposed to a bottom strut, an inside strut positioned between the top and bottom struts, wherein the top, bottom and inside struts cooperate to define a card slot dimensioned to house a memory card so that top and bottom edges of the card are adjacent the top and bottom struts. The front frame includes a window perimeter that defines a card window and includes a positioning guide adjacent the top strut in the shape of an asymmetrical corner dimensioned to correspond to an asymmetrical corner of the memory card. The back frame defines a compression tap aperture opposed to the card window, and includes at least one compression tab projecting into the card slot.