Harmon Kardon HD970:inside view

Leolabs · 21st July 2007, 01:35 AM

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.

Leolabs · 21st July 2007, 01:37 AM

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

Leolabs · 21st July 2007, 01:38 AM

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

Leolabs · 21st July 2007, 01:41 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.

Leolabs · 21st July 2007, 01:46 AM

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

Leolabs · 21st July 2007, 01:53 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.

Leolabs · 21st July 2007, 01:57 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.

Leolabs · 21st July 2007, 02:01 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.

rfbrw · 21st July 2007, 09:17 AM

Quote:

Originally posted by Leolabs
[B] Xilinx's FPGA.

CPLD not FPGA.

xaudiox · 21st July 2007, 09:24 AM

thanks for the pictures Leolabs!

21st July 2007, 01:35 AM	#1
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	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.

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21st July 2007, 01:37 AM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	The R-core transformer with 3 separate windings:2 for analog stages and 1 for the others.

21st July 2007, 01:38 AM	#3
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Sanyo's SF-HD65 laser pick-up unit,which can be found inside many cheap DVD players.

21st July 2007, 01:41 AM	#4
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	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.

21st July 2007, 01:46 AM	#5
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	The 'heart' of the machine:Analog Devices' Blackfin audio DSP.Note that the adjacent Xilinx's FPGA.

21st July 2007, 01:53 AM	#6
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	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.

21st July 2007, 01:57 AM	#7
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	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.

21st July 2007, 02:01 AM	#8
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Power supply section:Standard adjustable linear regulators for the analog stages,low-dropout for the digital circuits and switching regulators for the ATAPI drive.

21st July 2007, 09:24 AM	#10
xaudiox diyAudio Member Join Date: Jul 2006	thanks for the pictures Leolabs!

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