Audio amplifier arrangement.

摘要

A first signal processor stage (7) of an audio amplifier arrangement influences the signal strength of a received audio signal for at least part of the frequency range of the received audio signal. An output amplifier stage (11) amplifies the audio signal influenced by the first signal processor stage. The audio amplifier arrangement further includes a transformer (1) having a primary winding (2) connectable to a mains voltage and having a secondary winding (3) connected to an AC/DC converter (4) whose outputs are connected to at least the output amplifier stage (11) for feeding the output amplifier stage (11). A detection circuit (14) generates a detection signal (Vms) which is related to the power load of the transformer (1). An analysis circuit (15) detects in response to the detection signal whether the rise in temperature occurring in the transformer due to the power load has exceeded a specific norm. The analysis circuit (15) comprises a control circuit for reducing the signal strength of the received audio signal for at least said part of the frequency range in the case where a transgression of said norm is detected. <IMAGE>