![Mackie SRM450v3 [14/20] Service information](/img/pdf.png)
Mackie SRM450v3 [14/20] Service information
![Mackie SRM450v3 [14/20] Service information](/views2/1989810/page14/bge.png)
14
SERVICE INFORMATION
Warranty Service
Details concerning Warranty Service are
spelled out on page 19 of this manual.
If you think your loudspeaker has a
problem, please do everything you can to
confirm it before calling for service, includ-
ing reading through the following
troubleshooting section. Doing so might
save you from being deprived of your
Mackie loudspeaker.
If you do find the prob-
lem, make sure that you
turn down the LEVEL
controls and turn off the
SRM450 before correct-
ing it or changing any connections.
Of all Mackie products returned for ser-
vice (which is hardly any at all), many are
coded “CND” — Could Not Duplicate—
which usually means the problem lay some-
where else in the system. The following
troubleshooting tips may sound obvious,
but here are some things you can check:
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.
• Is the blue light on the front panel
illuminated? If not, make sure the AC
outlet is live. If so, refer to “No sound”
below.
• The AC line fuse inside the chassis is
blown. This is not a user-serviceable
part. Refer to “Repair” on page 16 to
find out how to proceed.
No sound!
• Is the input LEVEL control turned all
the way down? Follow the procedures
in the “Quick Start” section on page 6
to verify that all the volume controls in
the system are properly adjusted.
• Is the signal source working (and making
union scale)? Make sure the connecting
cables are in good repair and securely
connected at both ends. Make sure the
output volume (gain) control on the
mixing console or preamp is turned up
sufficiently to drive the inputs of the
speaker. You should be able to see the
SIGNAL PRESENT LED blink on the
rear panel.
• Make sure the preamp or mixer does
not have a Mute on, or a Tape or
Processor loop engaged. If you find
something like this, make sure the
volume/gain is turned down before
disengaging the offending switch.
• Is the
THERMAL
LED lit? Make sure there
is at least six inches of free space behind
the heatsinks. Allow the SRM450 to cool
off and it will turn back on.
One side is way louder than the other!
• Are the LEVEL controls set the same on
both active speakers?
• Check the PAN control or balance on
the signal source. It may be turned too
far to one side. If you’re using a stereo
signal source, it may be delivering an
out-of-balance stereo signal.
• Try swapping sides: Turn off the active
speakers, swap the input cables coming
from the mixing console, turn the active
speakers back on. If the same side is still
louder, the problem may be with your
active speakers or cables between the
mixer and the active speaker. If the
other side is louder now, the problem is
with the mixer or the signal source.
Poor bass performance
• Check the polarity of the connections
between the mixer/preamp and the
active speakers. You may have your
positive and negative connections
reversed at one end of one cable, causing
one SRM450 to be out-of-phase.
As soon as the music gets loud, the
SRM450 shuts down!
• Be sure that the PEAK LED on the rear
panel is not lighting up frequently or
continuously.
Remember to wear ear
protectors if you get close
to an SRM450 playing at
high levels. When the
PEAK LED comes on,
the SPL is in a region above 120 dB!!!
Содержание
- Caution avis 2
- Portable cart warning 2
- Safety instructions 2
- According to osha any exposure in excess of these permissible limits could result in some hearing loss to ensure against potentially dangerous exposure to high sound pressure levels it is recommend ed that all persons exposed to equipment capable of producing these levels use hearing protectors while this unit is in operation ear plugs or protectors in the ear canals or over the ears must be worn when operating this amplification system in order to prevent a permanent hearing loss if exposure is in excess of the limits set forth here 3
- Contents 3
- Don t forget to visit our website at www mackie com 3
- Duration per day sound level dba typical in hours slow response example 8 90 duo in small club 6 92 4 95 subway train 3 97 2 100 very loud classical music 1 102 1 105 tami screaming at adrian about deadlines 0 110 0 5 or less 115 loudest parts at a rock concert 3
- Exposure to extremely high noise levels may cause permanent hear ing loss individuals vary considerably in susceptibility to noise in duced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time the u s government s occupational safety and health administration osha has speci fied the permissible noise level exposures shown in this chart 3
- For more information about this and other mackie products 3
- Lend me your ears 3
- The srm450 can produce a maximum spl of 127 db 1m 3
- Introduction 4
- Hookup diagrams 6
- Quick start 6
- Srm450 stereo operation with a mixer and using the thru jack 6
- Dynamic microphone 7
- For microphone connections you can daisy chain up to two srm450s using the thru jacks as shown take great care to point any micro phones away from the srm450s otherwise you may get feedback 7
- Srm450 biamping with a powered subwoofer 7
- Srm450 using a microphone and the thru jack 7
- The srm450 can be used with a mackie swa1501 or swa1801 subwoofer to create an in credibly powerful system the active crossover inside the swa1501 splits the full range input signal into two ranges the swa1501 plays the low frequency range through its 500 watt ampli fier and 15 inch woofer and sends the high pass range to the srm450 the srm450 can be pole mounted on top of the swa1501 as shown saving the cost of a tripod stand 7
- Thru output 7
- Rear panel description 8
- Connections 10
- Placement 10
- Room acoustics 10
- Both sides back 11
- Bottom top 11
- Pole mount 11
- Rigging 11
- Rigging points 11
- Ac power considerations 12
- Thermal considerations 12
- Srm450 ac connections 13
- Service information 14
- Troubleshooting 14
- Warranty service 14
- Big print 16
- Care and maintenance 16
- Repair 16
- Construction features 17
- Control system function 17
- Disclaimer 17
- Line input power 17
- Options 17
- Physical properties 17
- Power amplifiers 17
- Safety features 17
- Srm450 specifications 17
- System specifications 17
- Transducers 17
- Mackie srm450 block diagram 060322sedf 18
- Srm450 block diagram 18
- Please keep your sales receipt in a safe place 19
- Srm450 limited warranty 19
- Loud technologies inc 20
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