Abstract: An MP3 player seat unit includes a player seat having a receiving slot provided at a front center for receiving an MP3 player therein, a sound source terminal in the receiving slot for plugging into a sound source jack on the MP3 player to output music signals, an amplifier and a loudspeaker built in two sides of the receiving slot, a receiving space formed at a rear lower central area of the player seat, and two battery compartments formed at two sides of the receiving space for supplying power to internal circuits of the player seat; a signal cable having a first terminal connector located in the receiving space for connecting to a female connector on the MP3 player, and a second terminal connector for connecting to an external computer or other music signal source apparatus; and a back cover for covering the receiving space and the two battery compartments.

Abstract: The present invention offers a loudspeaking structure applied on a portable computer, the loudspeaking structure comprises a fixing frame, a casing and a base; a top surface of the fixing frame has a plurality of containing speaker sections for enclosing speakers, the containing speaker sections further provide a plurality of sound-guide holes. By way of the present invention, the condition of a smaller resonance space of the loudspeaking structure in prior arts is no longer exist, instead of the prior art is a bigger resonance room. Therefore, the amplifying efficient of the prior speaker of the portable computer is highly promoted.