M-Audio BX Guide D'utilisation page 5

4. Subwoofer Bypass: Connect the included footswitch to this input, and then use the footswitch
to momentarily bypass the low frequencies generated by the subwoofer (including the amp,
driver, and crossover), sending the full-bandwidth signal directly to your main monitors. This
lets you conveniently audition mixes with and without the low-frequency extension of the
subwoofer. The LED Indicator on the front of the subwoofer flashes red when in Bypass
Mode.
Note: You can use any two-position footswitch, such as an electronic keyboard sustain pedal.
5. XLR Inputs: Use these inputs for XLR connections with either balanced or unbalanced wiring.
Use XLR connectors with this wiring configuration:
•
XLR Pin 1: signal ground (shield)
•
XLR Pin 2: signal positive (+)
•
XLR Pin 3: signal negative (–)
6. TRS Inputs: Use these inputs for 1/4" (6.35 mm) connections with either balanced or
unbalanced wiring.
For balanced wiring, use a three-conductor TRS connector with this wiring configuration:
•
TRS tip: signal positive (+)
•
TRS ring: signal negative (–)
•
TRS sleeve: signal ground (shield)
For unbalanced wiring, use a 1/4" (6.35 mm) connector—either with two conductors (TS) or
three conductors (TRS). A two-conductor (TS) connector automatically grounds the signal
negative input, whereas a three-conductor (TRS) connector, wired unbalanced, provides the
option of leaving the negative input open or grounded. We recommend grounding the unused
negative input, which you can do by wiring the ring and sleeve of the TRS plug together.
Note: If the TRS Inputs and XLR Inputs are connected at the same time, the TRS Inputs will
take priority, and the XLR Inputs will be muted. If the RCA Inputs are used at the same time as
either of the TRS Inputs or XLR Inputs, audio will be heard from both. However, we
recommend not playing audio through both connectors simultaneously, which can overload the
inputs, resulting in clipping (distortion) at the inputs.
7. RCA Inputs: Use these inputs for unbalanced RCA connections.
8. XLR Outputs: Use these outputs for XLR connections, with either balanced or unbalanced
wiring, to send the audio signal to your stereo direct-field monitors.
Use XLR connectors with this wiring configuration:
•
XLR Pin 1: signal ground (shield)
•
XLR Pin 2: signal positive (+)
•
XLR Pin 3: signal negative (–)
9. TRS Outputs: Use these outputs for 1/4" (6.35 mm) connections, with either balanced or
unbalanced wiring, to send the audio signal to your stereo direct-field monitors.
For balanced wiring, use a three-conductor TRS connector with this wiring configuration:
•
TRS tip: signal positive (+)
•
TRS ring: signal negative (–)
•
TRS sleeve: signal ground (shield)
10. Volume Control: Use this control to set the output gain from the subwoofer.
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