Features
Rear Panel
1.
Power Input: Use the included IEC power
cable to connect this input to a power
source.
2.
Fuse: If the unit's fuse is broken, lift this
tab to replace the fuse. Replace it with a
fuse with an appropriate rating (printed
under the unit's power cable input). Using
a fuse with an incorrect rating can
damage the unit and/or fuse.
3.
Power Switch: Use this switch to power
the loudspeaker on or off.
4.
Power/Standby
illuminates when the loudspeaker is
powered on.
5.
Standby On/Off LED: This LED illuminates when the loudspeaker is on standby. Wait until this
LED is off before using the loudspeaker.
6.
Logo On/Off LED: This LED illuminates when the Alto Professional logo on the front panel is lit.
7.
Line/Mic Switch: Engage (depress) this switch if your Input 1 audio source is a microphone.
Disengage (raise) this switch if your Input 1 audio source is line-level.
8.
Input 1: Use a standard XLR or 1/4" (6.35 mm) cable to connect your audio source to this input.
This input accepts both line-level and microphone-level sources. Set the Line/Mic Switch to the
appropriate setting.
9.
Input 2: Use a standard XLR or 1/4" (6.35 mm) cable to connect your audio source to this input.
This input accepts line-level sources only.
10. Input Volume Knob: Use this knob to set the level of the audio going into its corresponding
input below.
11. Signal/Limit LED: This LED illuminates green when an incoming audio signal is detected. It
illuminates red when the audio signal level is too high and is being dynamically reduced to
protect the loudspeaker from damage or distortion. If this LED is continually illuminated red, or if
the audio output sounds excessively distorted, then reduce the volume of the connected audio
source, or reduce the setting of the Input Volume Knob.
12. Mix Out: Use a standard XLR cable to connect this balanced output to the input of a second
Black Series loudspeaker. Audio is sent from this output at 0 dB.
13. Output Mix Switch: Engage (depress) this switch if you want to send audio from the
loudspeaker's internal DSP to the Mix Out. Disengage (raise) this switch if you want the audio
sent to the Mix Out to bypass the internal DSP.
14. Ground Switch: Engage (depress) this switch to reduce hum or noise.
15. DSP Mode Button: Press this button to set the loudspeaker's internal DSP to any of the
following settings:
• Flat: No change to the audio.
• Contour: Boosted bass and treble with a gradual cut of mid-range frequencies—an
optimal setting for most contemporary music.
• 80Hz HP: Applies a high-pass shelving filter where bass frequencies will be boosted
slightly.
• Ext LF: Extends the loudspeaker's low-frequency response, providing more resonant bass
frequencies.
• Custom: Applies your custom DSP mode, set in the Live Drive app.
16. Pairing Button: Press and release this button to pair the loudspeaker to your iPad or iPhone.
The Pairing LED will illuminate when it is paired. See the Bluetooth Pairing section for
instructions.
LED:
This
LED
10
7
9
8
14
13
12
7
4
3
2
1
16
11
15
6
5