Harman Kardon DPR 2005, Service Manual

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Complete Class-D Amplifier Module
• Digital switching controller, driver & MOSFET output
stage, output filter stage
• Designed for compliance with FCC, UL, CSA, CE
requirements
High-Performance Sound
• 70 watts per channel into 8 ohms (FTC)
• >96 dB Dynamic Range
• <0.15% THD+N
• 20 Hz to 24 kHz +/-0.5dB frequency response
>90% Efficient
• Internal heat sink
Configurable Audio Processing
• Treble, Bass, Volume Control, and EQ per channel
• Dynamic range compression and output limiting
• Standard 2-wire serial interface controlled via micro
controller or remote PC GUI
Pure Digital Path
• 8-channel digital audio inputs (32 -192 kHz, 16-24 bit) are
mapped to 7 speaker output channels
Graceful Protection and Recovery
• Short-circuit, thermal, over-current faults
Powered Second Zone
• Dynamic configuration for 7 channels or 5 channels plus
stereo second zone.
• 2-channel analog or independent rate digital input selection
for second zone
The D2Audio
TM
GR70 is a fully self-contained 70 watts per
channel digital amplifier module. The module enables rapid
system design for manufacturers of home theater
components.
The GR70 contains a high-performance digital switching
controller, MOSFET output stages, and high-quality output
filter stages.
The module is encased in an EMI-shielded package and tested
for compliance with agency regulations to assist FCC Class-B,
UL, CSA, and CE certification.
The GR70 is capable of driving up to 7 channels at 70 watts
into an 8-ohm load with all channels driven per FTC
specifications.
A configurable audio signal processor provides equalization,
volume control, tone control, compression, and limiting.
A powered second zone allows for a fully independent
amplifier zone. The amplifier can be dynamically configured
as 7 channels or 5 channels with a stereo second zone. The
second zone supports a stereo analog input or a fully
independent digital audio input.
A separate digital audio output is also provided for the
primary channels.
D2AUDIO GR70
• Complete digital amplifier for
home theater components
• 70 watts/channel
• Up to 7 channels
• Pure digital audio signal path
• <.15% THD+N, >96dB
dynamic range
• Configurable audio processing
• Powered 2nd Zone
• 90% efficient
• Graceful protection and
recovery
GR70 (DPR1005) DATA SHEETS
D
PR1005/DPR2005 harman/kardon
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