Question about Harman Kardon Harman HK 990 Amplifier
Hi i am in the same trouble
i were using the HK on a coaxial connection. I am tring to make the reset but the message of Recall : wait" is stucked and seems to never end
any more suggestions?
i have the standard manual but there is no info about that
Posted on Apr 25, 2015
1.Is the fault caused by an optical or coaxial input or both?
2. Have you tried a Firmware Reset? (press "Level Settings" button & "Speaker 1" together.
3.Do you have a Service Manual (I have pdf!)
Posted on Nov 28, 2014
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Posted on Jan 02, 2017
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IMPORTANT: When connecting two pairs of speakers, determine the impedance of each pair
by looking on the back of the speakers, in your owner's manual, or by contacting your dealer or manufacturer.
You can listen to two pairs of speakers at the same time ONLY if the impedance of EACH speaker is NOT LESS THAN 8 Ohms.
WARNING: Do not play sets of speakers simultaneously except as recommended above.
Amplifier may overheat.
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