Krell Industries MDA-300/500 manual Questions and Answers

I.QUESTIONS AND ANSWERS

Q. Should I leave the MDA-300/500on at all times?

A. Although you could leave the MDA-300/500on at all times without fear of damageto the amplifier, werecom- mend.30 minutesof warm-upbefore critical listening and switchingthe amplifier off whennot in use.

~WhenIpush the powerbutton on the front of the DA-300/-500,the amplifier doesn't turn on. What

shouldI c[o?

A. Unplugthe amplifier from the ACreceptacle and removethe input fromthe amplifier. Checkthe output connections, then plugthe amplifier back in. Checl~the circuit breakeron the-backof the unit andreset it if nec- essary. Pushthe powerbutton on the front panel. If the problempersists, unplugthe unit and call your dealer or Krell industries.

Q. WhenI turn the amplifier on there is a loud hum through the speakers. There was never a humbefore the MDA-300/500was in the system. Whatshould I do?

A. Often whena newcomponentis introduced into an audio system a hummay15ec.omepresent. This is often causedby_a groundloop in tlae system._Tryputting a 3 prong to 2 prong ACadaptor (cheate.r plug) on the powercord, lifting the groundfromthe unit. This sho.uld makethe humdisappear. If not, try another adaptor else- wherein the system.

NOTE:Always keep one major audio component grounded.

NOTE:Even though the ground is lifted from the power amplifier,it .is still gr~ou.ndedvia the interconnectcables throughoutthe rest ot tt~e system.

Q. Can I use special audio powerc~rds on the MDA-300

or MDA'500? '

A. Youcan experiment with special powercords as long as they are groundedon both ends and meet the amplifier's I5 amppowerrequirement.

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