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ONYX 1640
ONYX 1640
WARNING!
Pushing the TAPE TO
MAIN MIX button can create a
feedback path between TAPE IN
and TAPE OUT. Make sure your tape
deck is not in record, record pause,
or input monitor mode when you engage these switches,
or make sure the TAPE IN level control is turned all the
way down.
The TAPE OUT jacks produce an unbalanced signal
that is tapped off the MAIN OUTs. Normally, you would
connect these to the inputs of a recorder, but you can
use them as an extra set of main outputs for feeding
another zone, for example.
59. CONTROL RM Outputs
These 1/4" TRS jacks provide a balanced line-level
signal that can be used to provide another main mix
output (with MAIN MIX selected in the CONTROL
ROOM/PHONES SOURCE), or to monitor the SUB 1-2
outputs, SUB 3-4 outputs, TAPE inputs, or a 2-track feed
from your computer (with the optional FireWire card
installed).
Connect these outputs to the inputs of an amplifi er,
powered speaker, headphone distribution amplifi er, or
recording device.
60. SUB Outputs
These 1/4" TRS jacks are usually patched to the in-
puts of a multitrack deck, or to secondary amplifi ers in a
complex installation.
61. AUX RETURN 1-4
These 1/4" TRS input connectors accept balanced or
unbalanced line-level stereo signals from an external
processor or other device. The stereo AUX RETURNS
use a technique called jack normalling. If a signal is
plugged into the LEFT (MONO) side and nothing is
plugged into the RIGHT side, the signal is automatically
connected to both LEFT and RIGHT sides. As soon as
something is plugged into the RIGHT side, the normalled
connection is broken and the LEFT and RIGHT inputs
become stereo inputs (LEFT goes to the LEFT MAIN OUT
and RIGHT goes to the RIGHT MAIN OUT).
62. AUX SEND 1-6
These 1/4" TRS output connectors provide balanced
or unbalanced line-level signals for connecting to the
inputs of effects devices or stage monitor amplifi ers.
63. RECORDING OUTS
These two DB-25 connectors provide balanced direct
outputs for channels 1-8 and 9-16, respectively. They are
designed to be connected directly to a recorder’s analog
inputs, and use the TASCAM standard pinout for analog
signal connections (the same standard used on the ana-
log cards for the Mackie D8B and Hard Disk Recorder).
The signal at the RECORDING OUTS comes just after
the input GAIN control, and before the Low-Cut switch,
INSERT jacks, and EQ. This way you can EQ a channel,
connect a compressor or other dynamics processor to
the INSERT jack, and adjust the channel fader to suit
your live mix, but it has no effect on the signal going to
the recorder. This provides maximum fl exibility for the
mixdown stage.
See Appendix B for a wiring diagram of these connectors.
64. FIREWIRE I/O OPTION
Okay, we saved the best for last (well, almost last).
FireWire (a.k.a. IEEE 1394) is a high-speed serial I/O
interface for connecting digital devices, with more than
30 times the bandwidth of USB 1.1. You can install the
optional Onyx FireWire card in this slot, which provides
an interface for transferring digital audio to and from
your laptop computer or digital audio workstation
(DAW) with absolute zero latency.
The FireWire interface provides the direct outputs
for all sixteen channels and the Left/Right Mix. The
Left/Right Mix is pre-fader at the FireWire output, so its
level is independent of the MAIN MIX fader (important
for live gigs). Instead, it has a rotary level control that
provides 10 dB of boost or cut for the Left/Right mix,
to optimize the level for the recorder or DAW. Use the
FireWire interface to record a live performance directly
to your laptop, which you can mixdown to a stereo mix
later. Or you can use it to turn your Onyx mixer into a
high-quality computer audio interface for your DAW.
The card also provides a return for two channels from
the DAW, which can be routed through the CONTROL
ROOM/PHONES SOURCE matrix [18] via the FIREWIRE
button, to monitor the computer audio through your con-
trol room speakers or headphones (or through the main
speakers if ASSIGN TO MAIN MIX is selected).
The FireWire interface works with both PC and Mac.
As an added bonus, we include a free copy of Tracktion
with the FireWire card, our multitrack recording and
sequencing software application for PC and Mac.
Visit our website at www.mackie.com for more infor-
mation about the Onyx FireWire card.
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