Pioneer RS-A9 Owner's Manual page 58

Connecting the Units
Network Mode setting
Set the Network Mode to match the application aim of the connected speakers.
After completing setting, when this product's operation status is source OFF, press the
sysetm reset button for 1 second or more.
HIGH/LOW (A/B) (High/Low Range mode)
Use this setting when this product (RS-A9) is connected to low-range speakers and tweet-
ers. You are also recommended to use this setting if the system comprises just this product
(RS-A9).
CH A (A channel): HIGH (Frequency rage: 1.6 kHz - 20 kHz)
You can connect a tweeter.
CH B (B channel): LOW (Frequency range: 25 Hz - 10 kHz)
You can connect a low-range speaker.
You can also use a full-range speaker by adjusting the network frequency.
HIGH/MID (A/B) (High- Mid-Range mode)
Use this setting when this product (RS-A9) is connected to mid-range speakers. You are
also recommended to use this setting for a 4-way system comprising this product (RS-A9)
and one digital amp (RS-A7).
CH A (A channel): HIGH (Frequency range: 1.6 kHz - 20 kHz)
You can connect a tweeter.
CH B (B channel): MID (Frequency range: 160 Hz - 20 kHz)
You can connect a mid-range speaker.
You can also use a full-range speaker by adjusting the network frequency.
BRIDGED 2CH HIGH/HIGH (A/B) (2-channel High Range mode)
Full-balanced pure digital system (Frequency range: 1.6 kHz - 20 kHz)
Use this setting when this product (RS-A9) is connected to tweeters. You are also recom-
mended to use this setting for a 4-way system comprising this product (RS-A7) and 3 digi-
tal amps (RS-A7).
Using this product with bridge connections creates a full-balanced pure digital system.
Because one channel's DAC output is inverted, the digital output section through to the
speaker output comprises completely of balanced circuitry which dramatically suppresses
the generation of common mode noise to assure high S/N ratio and high dynamic range.
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