Alesis studio24 User Manual

Each of the first 8 channel modules on the Studio 24 contains an XLR balanced MIC
IN connector, a 1/4" TRS balanced LINE IN jack, an RCA unbalanced RCA TAPE IN
jack, an unbalanced RCA DIRECT OUT jack and a 1/4" TRS INSERT jack.

Each of the stereo Channels 9 - 16 have two 1/4” TRS balanced LINE IN jacks per
Channel, designed to accept line-level signals. These inputs may also be used with
unbalanced line-level sources. Signals present on these four stereo channels are
always routed to both the Channel FADER and MON 1/2.

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When used as stereo pairs, the odd-numbered inputs appear in the Right side of
the stereo image and even-numbered inputs appear in the Left side.

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When used individually, odd-numbered inputs are routed to the Right side of
the stereo image (or to Group 2 if the GRP switch is pressed on the Channel) and
even-numbered inputs are mono inputs that appear equally in the left/right
stereo image (or both Groups 1 and 2 if the GRP switch is down on that
Channel). Use the BALance knob to “pan” the inputs between the L/R and GRP
1/2 outputs.

Here are more detailed descriptions of each of these, and what they should be
connected to.

The MIC IN of each channel is a standard female XLR-3 connector. The cable wiring
is illustrated below:

Balanced Mic Input

Ground

Hot

Cold

Socket (female)

The MIC Input is designed to accept a wide range of balanced or unbalanced low
impedance input signals. Each  input can provide the +48 volts necessary for
phantom-powered microphones on pins 2 and 3; this may be turned on and off with
the PHANTOM switch.