Mackie PORTABLE RECORDING PREAMP Stereo Amplifier User Manual


 
17
Owner’s Manual
Owner’s Manual
Onyx Satellite Features
If you’ve followed the “Set the Levels” procedure on
page 11, the –20 and –10 LEDs should light frequently,
and the OL (Overload) LED should not light at all. If
the OL LED is blinking frequently, the signal is probably
distorted from overdriving the input. Either turn down
the GAIN control or turn down the signal at its source.
. Instrument Switch
Channels 1 and 2 have a button for switching the
1/4" line input to an instrument input. When the but-
ton is out, the 1/4" input accepts normal line-level
signals from low-impedance sources. When the button
is pushed in, the 1/4" input accepts high-impedance
signals from instruments with electric pickups, which
you would normally run through a DI box.
Plugging a guitar straight into a typi-
cal line input can result in the loss of
high frequencies, causing an un-
natural and dull sound. Normally, you
must use a direct box between a guitar
and a mixer’s or preamplifier’s input,
which serves to convert the impedance of the guitar
from high to low. The Instrument inputs on channels 1
and 2 make the need for a direct box unnecessary.
HOWEVER:
The Instrument inputs are unbalanced, so
if you are running a long cord between the instrument
and the Onyx Satellite (say over 20 feet), it is best to use
a direct box with a balanced output to avoid picking up
noise over the length of the cord.
4. POWER Indicator
When power is applied to the pod, either through the
FireWire connection or with the AC adapter, the POWER
LED lights to let you know the unit is operational.
Pod Front Panel
The Onyx Satellite is uniquely designed to be set up in
your studio with all the inputs and outputs connected,
and allows you to remove the pod from the base station
for portable use in the field.
The pod provides two Neutrik combination Mic/Line
inputs with independent Gain controls, a global 48V
phantom power switch, stereo line-level control room
outputs, two stereo headphone jacks with indepen-
dent level controls (one shared with the control room
outputs), and a FireWire connector. Each input channel
also has an instrument switch that converts the 1/4" line
input into a high-impedance instrument input so you
can connect electric instruments directly to the Onyx
Satellite without a direct box.
1. Channel GAIN
The GAIN controls adjust the input sensitivity of the
mic and line inputs on channels 1-2. This allows the
signal from the outside world to be adjusted to optimal
internal operating levels.
If a mic-level signal is plugged into the XLR combo
jack, there is 0 dB of gain (unity gain) with the knob
turned all the way down, ramping up to 60 dB of gain
fully up.
When using the balanced line input of the combo jack
(1/4" TRS connector), there is 20 dB of attenuation
all the way down, and 40 dB of gain fully up, with a “U”
(unity gain) mark at about 10:00.
. Signal Level Indicators
These LEDs indicate the channel’s signal level after
the GAIN control and just after the analog-to-digital
converter.
1
2
CTRL RM/
PHONES 1
PHONES 2
OL
-10
-20
-40
POWER
GAIN
+40dB
U
-20dB
U
20
30
40
60
OO
GAIN
+40dB
U
-20dB
U
20
30
40
60
MAX
OO
MAX
48V