Yamaha RX-Z9 Mode D'Emploi

This unit employs YAMAHA Parametric Room Acoustic 
Optimizer (YPAO) technology which lets you avoid 
troublesome listening-based speaker setup and achieves 
highly accurate sound adjustments. The supplied 
optimizer microphone collects and analyzes the sound 
your speakers produce in your actual listening 
environment.

• Please be advised that it is normal for loud test tones to be 

output during the auto setup procedure.

• If auto setup stops  and an error message(s) appear on the GUI 

display, follow the troubleshooting on page 37.

YPAO performs the following checks and makes 
appropriate adjustments to give you the best possible 
sound from your system.

Checks the polarity of each speaker.

Checks the distance of each speaker from the listening 
position and adjusts the timing of each channel.

Checks the speaker’s frequency response and sets the 
appropriate low frequency crossover for each channel.

Adjusts frequency and levels of each channel’s parametric 
equalizer to reduce coloration across the channels and 
create a cohesive sound field. This is particularly 
important if you use different brands or sizes of speakers 
for some channels or have a room with unique sonic 
characteristics.
YPAO equalizing calibration incorporates three 
parameters (Frequency, Level and Q factor) for each of the 
10 bands in its parametric equalizer (plus 5 subwoofer 
bands) to provide highly precise automatic adjustment of 
frequency characteristics.

Checks and adjusts the sound level (volume) of each 
speaker.

After you have completed the auto setup procedure, be sure to 
disconnect the optimizer microphone. If it is left connected to this 
unit, no sound will be output from the speakers.

* If possible, use a tripod (etc.) to affix the optimizer 

microphone at the same height as your ears would 
be when you are seated in your listening position.

00EN.00_RXZ9_U.book  Page 33  Friday, October 17, 2003  11:40 AM