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signal path for two-channel or multi-
channel analog inputs, with no signal
processing and no display. Straight
outputs the original analog or digital
signal without any post-processing.
i.LINK provides a digital connection for
DVD-Audio Linear PCM, Super Audio
CD DSD (Direct Stream Digital) and
other high quality audio sources. Direct
provides a direct connection for analog
stereo/multi-channel input and digital
stereo/multi-channel (via i.LINK) input,
with a dimmed display.
Pure Direct
Pure
(2 Channels, L/R)
Direct
(2ch)
Pure Direct
Multi-Channel In
(Multi-channel, L/R)
Analog/DSP
Analog
L/R
Input
Selector
DSP
RX-Z9 Front Channel Signal Flow
Symmetrical Power Amplifier
Circuitry
(RX-Z9)
The High Current Amplification system
uses a symmetrical, full push-pull circuit
configuration with a complementary
In
NFB
-
+
Basic Circuit Diagram
Gold-Plated
Extruded, Extra-
Large Speaker
Terminals
Power Amplifier
(Left) with Large,
Anti-Resonance,
Aluminum-
Extruded Heat
Sink (Left)
Providing Effective
Heat Dissipation
Control Section
Power Supply Chamber with Extra-Large Toroidal Transformer and Extra-Large
Custom-Made Block Electrolytic Capacitors (28,000µF)
FET input stage. This ensures balanced
output with no signal interference and
highest slew rate (rate at which signal
changes; affects high frequency
response). Furthermore, the massive
toroidal transformer and large capacity
block electrolytic capacitors (28,000µF)
ensure a consistently stable power supply.
Effective Linear Damping
Level variations due to high impedance
tend to reduce an amplifier's damping
factor (ability to control unwanted
speaker cone movement at low
frequencies), and frequency variations
+
Preout
-
YAC-520
cause it to fluctuate. Yamaha's Linear
Volume Control
Damping circuit cancels the effect of
these variations, maintaining a high,
High-sound quality, high
reliability gold-plated relays
stable damping factor for superior sound
Balanced signal transmission
for lower noise and distortion.
articulation and frequency response.
High Grade Construction with
Independent Chambers and Anti-
Vibration Design
The RX-Z9 uses a heavy-duty, rigid
chassis construction with separate
individual chambers for left and right
power amplifiers, power supply and
+B
control section to prevent any chance of
interference. This thick chassis has
electromagnetic shielding. The extremely
Speaker Out
-B
DIGITAL HOME THEATER TECHNOLOGIES
large aluminum-extruded heat sinks have
anti-resonance characteristics and ensure
effective heat dissipation. Yamaha's
ToP-ART base and feet provide stability
and further vibration-damping. The other
receivers use many of these same design
features.
Only the Finest Parts are Used
At this degree of extreme sound quality,
each and every part in the receiver makes a
difference. Yamaha technicians tested,
selected and in many cases custom-designed
all parts, and then tested them in groups to
ensure that they sounded good together.
Particularly noteworthy parts, in addition to
the transformer and capacitors, include:
(RX-Z9)
Preamp Chamber
Video Chamber
DSP Chamber
Two Direct Signal
Path Speaker
Relays with Gold-
Plated Crossover
Connection and
Shielding
Power Amplifier
(Right) with Large,
Anti-Resonance,
Aluminum-
Extruded Heat
Sink (Right)
Providing Effective
Heat Dissipation
(1) Extra-Large Toroidal Transformer, (2) Extra-Large
Custom-Made Block Electrolytic Capacitors (28,000
µF), (3) Gold-Plated Extruded, Extra-Large Speaker
Terminals, (4) Two Direct Signal Path Speaker Relays,
(5) High Sound Quality Schottky Barrier Diode and
(6) High Quality Selected Parts (RX-Z9)
Schottky Barrier diodes that allow fast
switching for high S/N ratio (RX-Z9).
High performance FE Mica capacitors
and Metric Mylar Film capacitors using
polypropylene material.
Thick PC board wiring with 5/8"
diameter copper jumper cables.
Two direct signal path speaker relays
with gold-plated crossover connections
and shielding.
3
5
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2
4
6
9
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