Krell Industries MDA-300/500 manual unit and call your aut~0rized dealer or Krell

Q. After the amplifier is on for about one hour it be- comesvery hot. Is this normal?

A. Yes. Due to the high bias design of the MDA-300/500 it will becomequite warm. After approximately 1 hour

the amplifier will be at its optimumoperating tempera- ture. If the amplifier should-have a severe temperature inbalance betweenthe. left and right channel, unplug the

unit and call your aut~0rized dealer or Krell.

Q. I tried a new preamplifier in myaudio system and

whenI turned the unit on the MDA-300/500shut off. Is the amplifier defective?

A. Morethan likely the amplifier is not defective. When connecting components you should always keep the amplifier off. Tile amplifer sensed a bad input signal and slaut off, protecting itself and the speakers.

There also could tiave been a bad cable connection or excessive DCoffset comingfrom the output of the pre- amplifier. Before turning tile amplifier on, check the input cables. If that doesn't help, bring the preamplifier to the dealer for testing.

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