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-   -   Harmon Kardon HD970:inside view (http://www.diyaudio.com/forums/digital-source/105603-harmon-kardon-hd970-inside-view.html)

Leolabs 21st July 2007 02:35 AM

Harmon Kardon HD970:inside view
 
The overall view.Note that compare to earlier production,this one use a
"two-part" ATAPI drive as opposite to South Korea's DVS drive.

http://img2.freeimagehosting.net/upl...19ddac5a1f.jpg

Leolabs 21st July 2007 02:37 AM

The R-core transformer with 3 separate windings:2 for analog stages and 1 for the others.

http://img2.freeimagehosting.net/upl...a0cd16a81f.jpg

Leolabs 21st July 2007 02:38 AM

Sanyo's SF-HD65 laser pick-up unit,which can be found inside many cheap DVD players.

http://img2.freeimagehosting.net/upl...2fd7568ae1.jpg

Leolabs 21st July 2007 02:41 AM

The ATAPI board,which almost equivalent to a normal DVDROM without:
-Master/Slave/Cable Select jumper setting,
-Analog Audio Output,
-Digital Audio Output.

This one use a VOS chipset rather than the popular MTK chipset.

http://img2.freeimagehosting.net/upl...bd36a28208.jpg

Leolabs 21st July 2007 02:46 AM

The 'heart' of the machine:Analog Devices' Blackfin audio DSP.Note that
the adjacent Xilinx's FPGA.

http://img2.freeimagehosting.net/upl...1e9be66c2d.jpg

Leolabs 21st July 2007 02:53 AM

The SPDIF IN/OUT and DAC section.This CDP comes with digital inputs and putputs both on coaxial and optical,with AKM's AK4117 serves as input receiver and a AKM4103 as transmitter.

The DAC section employs a AD1955.

http://img2.freeimagehosting.net/upl...6a4c8592d4.jpg

http://img2.freeimagehosting.net/upl...10afd6b8ad.jpg

Leolabs 21st July 2007 02:57 AM

The analog stages:OP275s as I/V converters and OPA2134s as low-pass filter/DC servo.Diamond buffers are also found at the final output stages.

http://img2.freeimagehosting.net/upl...4799ca2093.jpg

http://img2.freeimagehosting.net/upl...a539ae03c2.jpg

Leolabs 21st July 2007 03:01 AM

Power supply section:Standard adjustable linear regulators for the analog stages,low-dropout for the digital circuits and switching regulators for the ATAPI drive.

http://img2.freeimagehosting.net/upl...439dd208ba.jpg

http://img2.freeimagehosting.net/upl...be94311d0e.jpg

http://img2.freeimagehosting.net/upl...c780d65d90.jpg

rfbrw 21st July 2007 10:17 AM

Quote:

Originally posted by Leolabs
[B] Xilinx's FPGA.
CPLD not FPGA.

xaudiox 21st July 2007 10:24 AM

thanks for the pictures Leolabs!


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