User Manual-for Windows

ABOUT THE 828MK3
13
Programmable backlit LCD display
Any 828mk3 setting, including the powerful
CueMix FX on-board 16-bus mixer with effects,
can be accessed directly from the front panel using
the four rotary encoders and the 2x16 backlit LCD
display.
Metering section
The front panel of the 828mk3 displays several
banks of input and output metering. The threshold
for these lights is approximately -42 dB. The four-
and five-segment input meters provide dedicated
multi-segment metering for their respective inputs,
as do the five-segment main out meters.
Two ten-segment meters for the two front-panel
mic/guitar inputs show input levels from -42 to -1
in the first column of LEDs, plus an additional
range in a second column from zero to +12 dB
(including clip). Both inputs are equipped with V-
Limit™, a hardware limiter. With the limiter turned
off, signals that hit zero or above will clip (a hard
digital clip). However, with V-Limit turned on,
signals can go as high as +12 dB above zero with no
digital clipping. If the signal then goes above +12
dB, it will clip, even with V-Limit engaged.
The
Clock lights indicate the global sample rate (as
chosen in the MOTU Audio Console software).
The LOCK and TACH LEDs provide feedback for
the 828mk3’s on-board SMPTE synchronization
features. The ADAT and MIDI LEDs indicate audio
and MIDI activity, respectively.
16-BIT AND 24-BIT RECORDING
The 828mk3 system handles all data with a 24-bit
signal path, regardless of the I/O format. You can
record and play back 16-bit or 24-bit audio files at
any supported sample rate via any of the 828mk3’s
analog or digital inputs and outputs. 24-bit audio
files can be recorded with any compatible host
application that supports 24-bit recording.
CUEMIX FX 32-BIT FLOATING POINT
MIXING AND EFFECTS
All 828mk3 inputs and outputs can be routed to the
on-board CueMix FX 16-bus (8 stereo) digital
mixer driven by hardware-based DSP with 32-bit
floating point precision. The mixer allows you to
apply no-latency effects processing to inputs,
outputs or busses directly in the 828mk3 hardware,
independent of the computer. Effects can even be
applied when the 828mk3 is operating stand-alone
(without a computer) as a complete rack-mounted
mixer. Input signals to the computer can be
recorded wet, dry, or dry with a wet monitor mix
(for musicians during recording, for example).
Effects include reverb, parametric EQ and
compression/limiting. The 828mk3’s Classic
Reverb™ provides five different room types, three
frequency bands with adjustable crossover points,
shelf filtering and reverb lengths up to 60-seconds.
Two forms of compression are supplied: a standard
compressor with conventional threshold/ratio/
attack/release/gain controls and the Leveler™, an
accurate model of the legendary LA-2A optical
compressor, which provides vintage, musical
automatic gain control.
CueMix FX also provides 7-band parametric EQ
modeled after British analog console EQs,
featuring 4 filter styles (gain/Q profiles) to
effectively cover a wide range of audio material.
Low-pass and high-pass filters are also supplied
with slopes that range from 6 to 36 dB. The EQ
employs extremely high precision 64-bit floating
point processing.
The 838mk3’s flexible effects architecture allows
you to apply EQ and compression on every input
and output (a total of 58 channels), with enough
DSP resources for at least one band of parametric
EQ and compression on every channel at 48 kHz.
However, DSP resources are allocated dynamically
and a DSP meter in the CueMix FX software
!828mk3 Hyb Manual/Win Page 13 Monday, March 28, 2011 6:11 PM