Alesis Studio 24, Reference Manual

Page: 90 / 105

Description of Controls
S
TUDIO
24 R
EFERENCE
M
ANUAL
8 9
B
ACK PANEL
POWER
SWITCH
This is the master power switch for the Studio 24. When it’s ON, the green LED on
the front panel will light.
P
OWER CABLE
An industry-standard removable power cable is shipped with your Studio 24. If you
lose it, or need a longer or shorter length, compatible cables are available from
electronics and computer stores. The type is sometimes referred to as a “NEMA to
CEE” cable, or an “IEC power” cord.
Never defeat the grounding pin of the power cable. Use only
approved power cables.
PHANTOM S
WITCH
When this switch is pressed, it applies phantom power to the XLR microphone jacks
on all Channels, and the yellow PHANTOM LED on the front panel will light. 48
volts DC appears equally on pins 2 and 3 to be used by condenser-type microphones
requiring external power. Since this voltage is equal, it is “invisible” to standard
balanced dynamic microphones, hence the name, “phantom power.” Check the
manual for the mics you plan on using to make sure that this phantom method is
correct before you apply power.
The PHANTOM switch must be turned off if any electronically
balanced line source (such as the balanced output of a tape recorder
or CD player) is connected to any XLR MIC IN jack; it could damage
the output circuitry of such units. When you turn PHANTOM off, it is
normal for it to decay gradually; make sure the yellow PHANTOM
LED is totally off before plugging electronic units in to the MIC jacks.
Note: Make sure the channel volumes are set to minimum or are
muted before switching the PHANTOM switch on. The
voltage surge at initial turn-on may cause a loud “pop” in
the system. Also, make sure that all mics are plugged in
before phantom power is turned on.
C
ONTROL
R
OOM
O
UTS
L
AND
R
Connect these jacks to the input of your control room amplifier. Signal comes here
from the Control Room section of the mixer. The jacks are 3-conductor with a
forward-referenced ground to avoid ground loops, and may be used balanced or
unbalanced.
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