Mackie CR2-X BAR PRO, Owner'S Manual, Page: 10 / 14

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Appendix A: Service Information
Noise / Hum / Buzz
• Check the signal cable between the computer/mixer/
MP3 player/phone and the
CR2-X Bar Pro
. Make
sure all connections are secure. These problems
usually produce crackling noises, hum, or buzz.
• Make sure the signal cable is not routed near AC
cables, power transformers, or other EMI sources
(including wall warts and line lumps!). These sources
usually produce hum.
• Is there a light dimmer or other triac-based device
on the same AC circuit as the
CR2-X Bar Pro
?
Dimmers cause buzzing noises. Use an AC line
filter or plug the monitor into a different AC circuit.
• Excessive hiss is an indication of an incorrect gain
setting somewhere before the speaker.
• If possible, listen to the signal source with headphones
plugged in. If it sounds noisy there, it’s not the
CR2-X Bar Pro
.
• 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
CR2-X Bar Pro
.
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 or Other Issues
• Please email or call Technical Support if you are
having Bluetooth or 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 13.
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
a
CR2-X Bar Pro
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
CR2-X Bar Pro
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
CR2-X Bar
Pro
.
Troubleshooting
No power
• Make sure the power cord is plugged all the way into
the AC outlet.
• Our favorite question: Is it plugged in? Make sure
the AC outlet is live [check with a tester or lamp].
• 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 for the input source turned all the way
down? Verify that all the volume controls in the system
are properly adjusted.
• Is the signal source turned up? Make sure the signal
level from the computer, mixer, MP3 player, phone
(or whatever device immediately precedes
the
CR2-X Bar Pro
) is high enough to produce sound.
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.
• Are the input connectors plugged completely into
the jacks? Be sure all connections are secure.
• If possible, listen to the signal source with headphones
plugged into the preamp stage. If it sounds bad there,
it’s not the
CR2-X Bar Pro
.
• Too much bass or not enough bass? The first
(and easiest) suggestion is to switch between
EQ modes to see if that solves the issue. If not,
move around the room and see if the bass response
changes. It’s possible your listening position coincides
with a room mode where the low frequencies either
become exaggerated or nulled. If so, try moving
the
CR2-X Bar Pro
to a different position, or moving
your listening position.