Patent ID: 8130495

Claim:
An audio sound system, comprising: a compact case having dimensions of approximately 6.4 by 25.4 by 26.7 centimeters; a printed circuit board (PCB) disposed within the compact case, the PCB including, (a) a power conversion circuit for generating an operating potential, the power conversion circuit including heat-generating components, (b) an audio amplifier circuit coupled for receiving the operating potential to amplify an audio signal, and (c) a peak voltage and current limiting circuit coupled to the audio amplifier circuit to avoid hard clipping of the audio signal; a cooling tunnel mounted over the PCB for directing air flow across the heat-generating components, the cooling tunnel including a top surface, first side surface integrated with the top surface and having a first height extending from the top surface to the PCB, and second side surface integrated with the top surface and having a second height less than the first height of the first side surface; and a cooling fan mounted in the compact case adjacent a first opening of the cooling tunnel for directing air flow through a second opening of the cooling tunnel over the heat-generating components.