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Schematic for Harman Kardon HD 990 cdp
Schematic for Harman Kardon HD 990 cdp
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Old 8th July 2010, 11:07 PM   #1
Chilli6565 is offline Chilli6565  Australia
diyAudio Member
Join Date: Apr 2008
Location: Newcastle, Australia.
Default Schematic for Harman Kardon HD 990 cdp


Can anybody help me get my hands on a service manual or schematic for the Harman Kardon HD 990 cdp...I would like to start some mods on it.


" Digital is only ac anyway "
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Old 15th September 2010, 12:14 AM   #2
ccklone is offline ccklone  United States
diyAudio Member
Join Date: May 2010
Location: Greenville, IN
Hey Now,

I have an opportunity to buy a new HD990 for a very good price and was wondering if you could answer a couple of questions for me.

The specs say there are 2 digital inputs, a coax and optical. Can I input external devices to run through the DAC section of the HD990? I was going to run my Airport Express to the optical input. iMac > AE > HD990 > AVR > speakers. Is this correct?

Thanks in advance for any information you can provide me.

Finest kind,
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