| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid destruction of elements composing a power amplifier, and not to interrupt a reproduction program by the heat of the power amplifier. <P>SOLUTION: In a sound reproduction apparatus in which a sound signal is supplied to a loud speaker 6 via a sound volume control 3 and a power amplifier 5, a temperature-detecting means 7 which detects the temperature of the power amplifier 5, is installed. Each time detection temperature of the temperature detecting means 7 reaches the predetermined temperature T0, The sound volume from the volume control 3 is reduced automatically in steps. <P>COPYRIGHT: (C)2004,JPO</p> |
