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Alto Professional iPA Manual

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REAR PANEL FEATURES
1. POWER INPUT – Connect
the included power cable to
this input and connect the
other end of the cable to a
power source. Make sure
the speaker's POWER
SWITCH is set to "off" when
plugging and unplugging the
cable.
2. POWER SWITCH – Turns
the speaker on/off. Make
sure the VOLUME knob is
set to "zero" before turning it
on.
3. POWER LED – Illuminates
when the speaker is on.
4. DOCK – Connect your iPad
(not included) here.
5. DOCK VOLUME – Turn this knob to adjust the iPad's volume (not included).
6. OUTPUT CHANNEL – Set this switch to determine which channel is sent out of the MIX
OUT (to your extension speaker) and which channel is heard in the iPA Music System
(your "local" speaker):
• LEFT: The left channel will be sent to your extension speaker. The right channel will
be heard through the local speaker.
• MONO: Both left and right channels will be summed and be sent to both your
extension speaker and local speaker.
• RIGHT: The right channel will be sent to your extension speaker. The left channel will
be heard through the local speaker.
7. MIX OUT – Use a standard XLR cable (not included) to connect this jack to the input of
another speaker (i.e., another ALTO Professional speaker).
8. INPUT (XLR / 1/4") – Use a standard 1/4" TRS or XLR cable (not included) to connect
another sound source to this input.
9. INPUT (RCA) – Use a standard stereo RCA cable (not included) to connect another sound
source to this input.
10. INPUT VOLUME – Turn this knob to adjust the volume of a sound source connected to
the inputs.
Note: If you have devices connected to both inputs, this knob will adjust the volume of
both devices. To adjust the mix between the devices, we recommend adjusting the volume
of the device connected to the RCA input.
11. SIGNAL / PEAK LED – This light will illuminate red, depending on the signal level being
sent into the speaker:
• Flickering red: The audio signal is high, triggering the speaker's built-in limiter.
• Solid red: The audio signal being sent to the speaker is "clipping" or distorting.
Reduce the volume of your sound source.
12. LOUDNESS CONTOUR – Engage (depress) this switch to emphasize low and high
frequencies by +3 dB. Disengage the switch for flatter response for live performance or
for maximum output.
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