Owner
’s Manual
19
Owner’s Manual
Appendix A: Service Information
Noise
• Make sure all connections to the ThumpXT are good
and sound.
• Make sure none of the signal cables are routed near
AC cables, power transformers, or other EMI-inducing
devices.
• Is there a light dimmer or other SCR-based device
on the same AC circuit as the ThumpXT? Use an
AC line filter or plug the loudspeaker into a different
AC circuit.
Hum
• Try disconnecting the cable connected to the input
jack. If the noise disappears, it could be a “ground
loop,” rather than a problem with the ThumpXT.
Try some of the following troubleshooting ideas:
• Use balanced connections throughout your
system for the best noise rejection.
• Whenever possible, plug all the audio
equipment’s line cords into outlets which share
a common ground. The distance between
the outlets and the common ground should
be as short as possible.
Bluetooth / Linking Issues
• Sometimes a good ‘ol fashioned reset works wonders.
There are two types, soft and hard. See page 15
for more info on resetting ThumpXT.
• Try linking two ThumpXT loudspeakers together prior
to connecting via Bluetooth.
• Be sure to connect the Bluetooth device to the primary
ThumpXT loudspeaker.
Other Issues
• Please email or call Technical Support if you
are having any other issue not listed here:
o mackie.com/support-contact
o 1-800-898-3211
Repair
For warranty service, refer to the warranty information
on page 23.
Non-warranty service is available at a factory-authorized
service center. To locate the nearest service center,
visit www.mackie.com/support/service-locator.
Service for ThumpXTs living outside the United States
may be obtained through local dealers or distributors.
If you do not have access to our website, please call
our Tech Support department at 1-800-898-3211 (normal
business hours, Pacific Time), to explain the problem.
They will tell you where the nearest factory-authorized
service center is located in your area.
If you think your ThumpXT has a problem, please check
out the following troubleshooting tips and do your best to
confirm the problem. Visit the Support section of our website
(www.mackie.com/support) where you will find lots of useful
information such as FAQs and other documentation. You may
find the answer to the problem without having to part with
your ThumpXT.
Troubleshooting
No power
• Our favorite question: Is it plugged in? Make sure
the AC outlet is live [check with a tester or lamp].
• Our next favorite question: Is the power switch on?
If not, try turning it on.
• Make sure the line cord is securely seated in the line
cord socket and plugged all the way into the AC outlet.
• Is the power LED on the front panel illuminated?
If not, make sure the AC outlet is live. If so, refer
to “No sound” below.
• The internal AC line fuse may be blown. This is not
a user serviceable part. If you suspect the AC line
fuse is blown, please see the “Repair” section next.
No sound
• Is the level knob for the input source turned all the way
down? Verify that all the volume controls in the system
are properly adjusted. Look at the level meter
to ensure that the mixer is receiving a signal.
• Is the signal source working? Make sure
the connecting cables are in good repair and securely
connected at both ends. Make sure the output level
control on the mixing console is turned up sufficiently
to drive the inputs of the speaker.
• Make sure the mixer does not have a mute on
or a processor loop engaged. If you find something
like this, make sure the level is turned down before
disengaging the offending switch.
• Has it shut down? Make sure there is at least six
inches of free space behind each ThumpXT.
Poor sound
• Is it loud and distorted? Make sure that you’re not
overdriving a stage in the signal chain. Verify that
all level controls are set properly.
• Is the input connector plugged completely into
the jack? Be sure all connections are secure.
• Are there phasing issues? The signal source should
only be connected to a single input. For example,
do not connect the L/R outputs from a mixer
to the ThumpXT channel 1 and 2 inputs.
Do not use a Y cable to split a phone’s signal,
use both outputs of a stereo synth (which sums
to mono, anyway), etc.
