Installation Notes; Troubleshooting - Montarbo EARTH PRO Serie Notice D'emploi

EARTH PRO

INSTALLATION NOTES

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Earth Pro 115A - 118A transport carts allow handling Earth 115 and
118 subwoofers up to a maximum load of 150 kg / 330.6 lbs.
Flybar EP115 - 118 allow the flown installation of Earth PRO
subwoofers up to a maximum load of 265 kg/584 lbs. Installation
is carried out by releasing the flybar cams and inserting them into
the seats of the boxes. The unit is then fi xed on the side by means of
safety pins.

TROUBLESHOOTING

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SYMPTON LIKELY CAUSE
Speaker not connected to active AC
No sound
power.
No sound. The speaker is connected to Speaker power cable is faulty or
working AC power but won't come on. improperly connnected.
Signal source (mixer, instrument, etc )
is not sending.
No sound. Speaker comes on.
Faulty cables and connections
Signal sounds distorted and very loud, Excessive input signal, trying to exceed
PEAK light is lit most of the time. the capabilities of the speakers.
Signal sounds distrorted even at
Mixer or other source is overdriven.
moderate volumes, LIMIT light is not lit.
Lots of hiss in the sound, the mixer
Improper gain structure
controls are at very low settings.
Noise or hiss heard at output. Noisy source device
Improper A/C ground or faulty
equipment connected to mixer input.
Hum or Buzz that increases or decreases
when the mixer level controls are moved.
Faulty cable between source equipment
and mixer.
Improper A/C grounding, ground loops
Hum or Buzz
Excessively long unbalanced cable run.
Improper system gain structure
User manual
WHAT TO DO
Verify that speaker is connected and that the circuit is on
• Re-seat the power cable at both ends.
• Substitute a known-good power cable.
• Check VU meters on the source mixer.
• Verify that the tape or CD is playing.
• Use headphones to verify that the instrument is actually sending
an audio signal
• Disconnect and re-seat signal cables.
• Replace suspected cable withn a known-good cable
• Reduce the output level of the source.
• Turn down the level controls on the speaker.
• Use additional EARTH PRO speakers.
Review the Owner's Manual for your mixer and adjust controls as
needed
• Input sensitivity (gain)
• Channel faders
• Master faders Once this is done, review the instructions in the
Quick Start section of this guide.
• Reduce the level settings at speaker. review the Owner's Manual
for your mixer and adjust controls as needed.
• Input sensitivity (gain)
• Channel faders
• Master fader
Disconnect the devices that are connected to your speaker one at a
time. If the npoise goes away, the problme is with the source or the
connectiong cable.
Disconnect or mute channels one at a time to isolete the
problem. Refer to the owner's manual of the faulty equipment for
troubleshooting help.
Substitute a Known-good cable for the suspected faulty cable.
• 'Lift' the audio ground by usign an XLR/F to XLR/M adapter on
one end.
• Re-route audio cables away from AC power and lighting cables.
• Use the balanced outputs (if available) of your mixer or source
equipment to drive your EARTH PRO speakers.
• Use a "DI Box" (direct injection) boc to convert your undbalanced
equipment output to a balanced output.
Reduce the INPUT level controls and increase the output level of
your source devices
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