Virtuo Installation and Setup Guide
Bridging Virtuo’s Internal Amplifier
Bridging Safety Considerations and Recommendations
114
Bridging Safety Considerations and Recommendations
Before connecting them to the bridged amplifier, make sure your speakers are rated for at least 475W at
4
Ω
.
Using speakers that are not appropriately rated could damage the speakers.
Bridging should only be used with Virtuo’s internal amplifier. Attempting this with any other amplifier
(including the ones offered by TouchTunes for other jukebox models or in the Virtuo Floor Stand) could
cause degraded audio quality, and damage to the amplifier or the speakers.
While Bridged Mode is on, the “Through” connectors on the amplifier should not be used.
Troubleshooting Amplifier Bridging
Below are solutions to any issues you may face after rewiring your speakers and activating amplifier bridging:
Problem
Probable Causes
Solution
No sound at all
•
Certain connections were not
made properly, preventing
audio from being transmitted
•
Virtuo’s internal amplifier has
gone into protection mode, due
to an electrical problem (short-
circuit, overload, etc.)
•
Virtuo is paused, or volume is
too low
•
Review all connections, following the
schematic on page 2 of this document.
•
Review all wiring, then lower the output
volume to its lowest setting, then slide it up
slowly until you hear music again.
•
Make sure Virtuo is not paused, then raise
the output volume slowly.
Degraded sound quality (no
bass, distortion, abnormal
artifacts)
•
The speakers wired to zones 1
and 2 were not wired identically,
and are out of phase
•
The speakers are not rated for
475W at 4
Ω
.
•
Balance was not set to the
middle before bridging was
activated.
•
Review the wiring between the amplifier and
the speakers. Make sure all speakers are
wired the same (see step 4 on page 3 of this
document.)
•
If each zone outputs to a single speaker,
check that the speaker is rated no lower
than 4
Ω
. If outputting to multiple speakers,
check that the ohms load on the circuit
including all the speakers on a zone is no
lower than 4
Ω
.
•
Bring the volume down to its lowest level
then deactivate bridging. After the reboot,
set balance to the middle, then reactivate
bridging. After the second reboot, raise the
volume again to verify that the sound is OK.
Volume too low, despite
volume setting being at or
close to maximum
•
Speakers have impedance
much higher than 4
Ω
.
•
Problems with wiring (wires are
not fully connected)
•
Use different speakers or reconfigure
speaker groupings (in the case where
multiple speakers are connected to one
zone output on the amplifier.)
•
Disconnect, then re-connect each speaker
wire in turn, making sure each wire makes a
positive connection.
