BRS-12A3 User Manual SCD/ATT Version 1.2 29-04-2019
25
Problem
Explanation
No subwoofer output on passive subwoofer
A 4-core cable is required from the main unit to the
passive subwoofer.
Is the speakON connector connected to OUTPUT 2 & 3?
Is output 1 muted on the phase and mute page?
LCD Screen is blank, but audio works OK
LCD Screen is switched off. Swipe from the bottom of
the screen to the top in the centre to switch it back on.
LCD Shows input levels but there is no sound
Is the master mute switched on?
If the rear panel of the ampli
fi
er module is hot, the
module is in thermal protect. Allow the module to cool
and it will un-mute.
LCD Screen does not scroll
Use a horizontal swipe to change screens, not diagonal
movement.
Use your
fi
ngertip/nail to gently swipe horizontally.
Is your
fi
nger excessively dry/wet?
Poor sound quality
Check impedance loading on mid-high outputs. This
unit is designed to work into 4
Ω
loads, reducing this
impedance beyond 4
Ω
will impact sound reproduction
and reliability.
Buzz from ampli
fi
er when input leads connected
Ensure there is a good earth connected to the unit.
Check signal input leads for conductor continuity.
Any input source needs to be connected to the same
mains circuit and earth as this unit otherwise this could
create a earth hum-loop.
Rubbing/crunching noise from driver
The loudspeaker driver has failed. Please contact OHM.
Unit behaving strangely
Unplug from mains connection for 2 minutes and re-
power.
Update
fi
rmware on the unit.
USB Connection does not work
Is Pro-A-Sync installed on your computer?
Is the USB cable faulty? Try another cable.
Reboot computer & reload Pro-A-Sync.
Unit does not power up
Please check mains connection/fuse and con
fi
rm there
is a working mains supply to the unit.
Troubleshooting Guide
