PROTECTION
Every model in the
Initial
Thermal Protection : Abnormally high heat sink temperatures will engage the protection circuitry for the overheating channel only. An output relay disconnects the speakers until normal tempera- ture range is restored. The Protect indicator will light to show the protection circuit is active. To guard against this problem, make sure the unit receives adequate ventilation on all sides and that both the front and rear panels are unobstructed. If the power trans- former gets too hot, its thermal switch will disconnect all of the sec- ondary power and disconnect both channel outputs.
Short circuit : If output is shorted due to faulty wiring, the thermal circuitry will automatically protect the amplifier. If this occurs, the load will be disconnected by the thermal protection circuitry.
DC Voltage Protection : If an amplifier channel detects DC volt- age at the speaker output, the output relay will immediately open to prevent speaker damage.
Subsonic Frequency Protection : The
There is reason to be concerned any time the Protection LED lights up (except for initial
SETUP
Clip limiter | HPF |
Clipping is the result of an amplifier running into power supply lim- itation. The maximum output voltage that any amplifier can pro- duce is limited by its power supply. Attempting to output a voltage (or current) level that exceeds the power supply limit will result in a flattening effect on the signal. A clipped waveform exhibits ex- treme harmonic distortion, making it sound harsh or dissonant. The clip limiter detects this and reduces the gain to minimize the amount of overdrive. To preserve as much of the program dynam- ics as possible, limiting reduces the average program level until peaks barely clip. Each channel has its own clip limiter, which can be switched on or off. When driving
Also known as a
You should set up the filters so they best suit the frequency re- sponse of your speakers, since some speakers are particularly sensitive to
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