Features - Yamaha 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.

Features

■ 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.
Accessories
• AC power cord
• Rubber feet x 4
• Euroblock plug (3P) x 12
• Owner's Manual (this document)
6
IMX644 Owner's Manual
■ 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.