Yamaha IMX644 Introduction

IMX644 Owner’s Manual

Introduction

Thank you for purchasing the Yamaha IMX644 Digital Installation Mixer. In order to take full

advantage of the IMX644 functionality and to ensure trouble-free operation, please read this

owner’s manual carefully before use. After you have read the manual, keep it in a safe place

for reference when needed.

■

Versatile Input/Output Conﬁguration

The IMX644 features an input/output configuration that is ideal

for a wide range of applications: six mono inputs, four stereo in-

puts, two stereo outputs, two mono outputs, and one dedicated

stereo output for recording.

■

16 Memories

Up to 16 sets of mixer settings can be stored in memory and in-

stantly recalled as required. Four of the memories can be directly

recalled via front-panel MEMORY [A] through [D] buttons.

■

Optical Digital I/O

Connecting to compatible devices (CD and DVD players, for ex-

ample) via the optical digital interface allows accurate signal

transfer with no loss of signal quality. The digital input features

a built-in sample rate converter, so there is no need for word

clock synchronization.

■

Powerful Mixing Features

•Parametric EQ

Parametric equalization is provided on all input channels: 3-

band EQ on mono input channels, and 2-band EQ on stereo

input channels.

6-band EQ is provided on all outputs except the recording

output.

• Feedback Suppressor

Feedback suppression is provided on all six mono input

channels.

The Feedback Suppressor provides two stages of feedback

prevention: static ﬁlters that can be set in advance, and

dynamic ﬁlters that self-adjust in real time to control feed-

back.

• Priority for Speciﬁed Voice or Music Sources

The Priority Ducker automatically “ducks” (reduces the vol-

ume of) the background when a signal is applied to a speci-

ﬁed mono input channel, making announcements stand out

for greater intelligibility. All stereo inputs assigned to the

same output channel are reduced to a speciﬁed level when

priority input is detected.

Music Override gives priority to a music source applied to a

speciﬁed stereo input channel. All other stereo inputs

assigned to the same output channel are muted when prior-

ity input is detected.

• Delay

Precise delays can be applied to all outputs to allow time

alignment for a solid sonic image with clear imaging and

optimum overall sound quality throughout the listening

area.

Features

Accessories

•AC power cord

• Rubber feet x 4

• Euroblock plug (3P) x 12

• Owner’s Manual (this document)