Be Sure You Have Enough Voices - MOTU 828mkII User Manual

For complete details about the 828mkII settings,
see chapter 5, "MOTU FireWire Audio Console
(Mac OS X)" (page 41) or chapter 6, "MOTU
FireWire Control Panel (Mac OS 9)" (page 47).
The following sections provide a brief explanation
of each 828mkII setting for use with AudioDesk.
Sample rate
Choose the desired overall sample rate for the
828mkII system and AudioDesk. Newly recorded
audio in AudioDesk will have this sample rate.
Imported audio or soundbites in existing files that
do not match this sample rate will be displayed in
the Soundbites window with a red 'X' on its move
handle to indicate that it cannot be played.
Clock Source
This setting is very important because it
determines which audio clock the 828mkII will
follow.
If you do not have any digital audio connections to
your 828mkII (you are using the analog inputs and
outputs only), and you will not be slaving
AudioDesk to external SMPTE time code, choose
Internal.
If you are slaving the 828mkII to the ADAT sync
Input connector, choose ADAT 9-pin.
If you are slaving the 828mkII and AudioDesk to
SMPTE time code via the 828mkII itself, choose
SMPTE and follow the directions in "Syncing to
SMPTE time code" on page 27.
If you have digital audio devices connected to the
MOTU 828, or if you are not sure about the clock
source of your setup, be sure to read "Making sync
connections" on page 22 and "Clock Source" on
page 42.
Buffer Size (OS X) / Samples Per Buffer (OS 9)
The Buffer Size setting (Samples Per Buffer under
Mac OS 9) can be used to reduce the delay — or
monitoring latency — that you hear when live audio
A U D I O D E S K
is patched through your 828mkII hardware and
AudioDesk. For example, you might have MIDI
instruments, samplers, microphones, and so on
connected to the analog inputs of the 828mkII. If
so, you will often be mixing their live input with
audio material recorded in AudioDesk. See
chapter 12, "Reducing Monitoring Latency"
(page 89) for complete details.
Optical input and output
To make a 828mkII optical input or output
available in AudioDesk, choose the appropriate
format (ADAT optical or TOSLink) from the optical
input and/or output menu. If you won't be using
the optical connectors, turn them off.
Phones
This 828mkII setting lets you choose what you'll
hear from the headphone jack. For example, if you
choose Main Outs, the headphones will duplicate
the main outs. Or you can choose any other output
pair. If you choose Phones, this setting makes the
headphone jack serve as its own independent
output pair. As a result, you'll see Phones 1-2 as an
additional audio destination in AudioDesk's audio
output menus.

BE SURE YOU HAVE ENOUGH VOICES

Go to the Setup menu (Basics menu under Mac OS
9) and choose MOTU Audio System
Options>Configure Studio Size. Then check to
make sure you have enough mono and stereo audio
voices to cover the 20 channels of input and 22
channels of output provided by your 828mkII —
although the number of channels may depend on
how your 828mkII is configured:
12 channels for analog I/O (including the
■
headphone out)
2 channels for RCA S/PDIF
■
Zero, 2 or 8 channels for optical, depending on
■
whether you have optical turned off, or set to
S/PDIF or ADAT optical
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