Mackie FRS1700 Owner's Manual - Poor Bass Response
13
Owner’s Manual
Owner’
s Manual
Partial Sound (frequency band missing)
s )NCORRECT%1SETTINGSINTHEELECTRONIC
equipment. Ensure all EQ settings and filters
on the mixing console or preamplifier and on
other equipment are set for normal operation.
Ensure level controls on electronic crossovers
and associated amplifiers are correctly set and
that all cables and connections for such
equipment are connected and working properly.
s ,OUDSPEAKERNOTWORKINGPROPERLY3WAPWITHA
good one.
s 4HEFUSESINSIDETHEAMPLIlERMAYHAVEBLOWN
These are not a user-serviceable. See next page
about service.
One side is louder than the other
s !REBOTHLEVELCONTROLSSETTOTHESAMEPOSITION
s #HECKYOURSOURCESIGNALTOMAKESURETHELEFT
and right signals are balanced.
s !RETHESPEAKERIMPEDANCESMATCHED
Different speaker loads can cause different
volume levels on each side.
s 4RYSWITCHINGSIDES4URNOFFTHEAMPSWAP
the speaker cables at the amp and turn the
amp back on. If the same side is still louder,
the problem is with your speaker cabling or
the loudspeakers. If the other side is louder
now, the problem is with the mixer, the
loudspeaker processor, the amp, or the
line-level cabling.
Poor Bass response
s #HECKTHEPOLARITYOFTHESPEAKERCABLE
connections. You may have your positive
and negative reversed at one end of one
speaker cable.
As the music gets loud, the amp shuts
down
s -AKESURETHE/,,%$SARENOTLIGHTING
continuously. If so, turn down the signal
source or the amp level controls.
s #ANTHEAMPBREATHE)TNEEDSPLENTYOF
fresh air to stay cool.
Do not block the
ventilation holes.
Noise/Hum
s #HECKTHESIGNALCABLEBETWEENTHEMIXER
and the amplifier. Make sure all connections
are good and sound.
s -AKESURETHESIGNALCABLEISNOTROUTED
near AC cables, power transformers, or
other EMI-inducing devices.
s )STHEREALIGHTDIMMEROROTHER3#2BASED
DEVICEONTHESAME!#CIRCUITASTHEAMPLIlER
Use an AC line filter, or plug the amplifier into a
different AC circuit.
s )FPOSSIBLELISTENTOTHESIGNALSOURCEWITH
headphones plugged into the console. If it
sounds noisy there, the problem is not in the
amplifier.
s )STHEREACABLE46AUDIOFEEDINYOURSYSTEM
An incorrect ground may cause a "ground loop"
hum.
s 3OMETIMESITHELPSTOPLUGALLTHEAUDIO
equipment into the same AC circuit so they
share a common ground.
Repair
For warranty repair or replacement, refer
to the warranty information on page 19.
Non-warranty repair for Mackie products is
AVAILABLEATAFACTORYAUTHORIZEDSERVICECENTER
To locate your nearest service center, visit
www.mackie.com, click “Support” and select
“Locate a Service Center.” Service for Mackie
products living outside the United States can be
obtained through local dealers or distributors.
If you do not have access to our website, you can
call our Tech Support department at 1-800-898-3211,
Monday-Friday, during normal business hours, Pacific
Time, to explain the problem. Tech Support will tell
YOUWHERETHENEARESTFACTORYAUTHORIZEDSERVICE
center is located in your area.