540A/640A V2.0 Integrated amplifier
4. Short circuit detection 
Indicator - Unit has switched off during operation, protection LED flashes constantly in bursts of four.
Description - During power up from Standby CAP5 performs a check on the loudspeaker terminals to see if a short across the terminals has been accidentally introduced. If the resistance measured across the loudspeaker terminals is too low the unit will stay in Standby mode until the fault has been removed and Power up is
Remedy - User related fault. There may be a short circuit between the loudspeaker terminals. Check all loudspeaker connections before attempting to switch the unit out of Standby.
5. Intelligent clipping detection 
Indicator - Volume is nudged down automatically.
Description - CAP5 has the ability to detect when the amplifier starts to clip or overdrive at it’s output, which can damage loudspeakers, and degrade the sound. Clipping distortion is caused at high volume levels when the output signal briefly goes outside the maximum voltage that the amplifier can provide, causing the tops of the signal to flatten off. When CAP5 detects clipping the volume will be automatically nudged down until CAP5 detects an undistorted output.
Volume
Clipping
It is possible to disable the clipping detection feature by holding down the Standby/On button during power up (whilst plugging the unit into the mains power). The unit will indicate this by flashing the protection LED for several seconds.
Note: Disabling the clipping detection is not advised as this feature has been added deliberately to protect the amplifier and loudspeakers.
Azur integrated amplifier 15
