Yamaha RX-Z7 User Manual

This unit employs Yamaha Parametric room Acoustic 
Optimizer (YPAO) technology to optimize the frequency 
characteristics of its parametric equalizer to match your 
listening environment. YPAO uses a combination of the 
following three parameters (Frequency, Gain and Q factor) 
to provide highly precise adjustment of the frequency 
characteristics.

■ Frequency

This parameter is adjustable in one-third octave 
increments between 32 Hz and 16 kHz.

■ Gain

This parameter is adjustable in increments of 0.5 dB 
between –20 and +6 dB.

■ Q factor

The width of the specified frequency band is referred to as 
the Q factor. This parameter is adjustable between the 
values 0.5 and 10.

YPAO adjusts frequency characteristics to suit your 
listening requirements using a combination of the above 
three parameters (Frequency, Gain and Q factor) for each 
equalizer band in this unit’s parametric equalizer. This unit 
has 7 equalizer bands for each channel.
The use of multiple equalizer bands enables more precise 
adjustments of frequency characteristics (as in Figure 2). 
This is not possible using only a single equalizer band (as 
in Figure 1).

Gain

Frequency

Original frequency 
characteristic

Band 1

Frequency 
characteristic after 
correction

Gain

Frequency

Band 1

Band 2

Frequency 
characteristic after 
correction

Original frequency 
characteristic