Mackie MR5mk2 User Manual

Owner’

s Manual

•  Is the power indicator [8] on the front panel  

illuminated? If not, refer to “No Power” above.

•  Is the input level [2] control turned up?
•  Is the signal source turned up? Make sure the signal level 

from the mixing console (or whatever device  
immediately precedes the studio monitor) is high 
enough to produce sound.

•  If it’s a stereo pair, try switching them around. For 

example, if a left output is presumed dead, switch the 
left and right cords at the monitor end. If the problem 
switches sides, it’s not the monitor. It could be a bad 
cable, or no signal from the mixer.

•  Is the input connector plugged completely into the jack? 

If using a 

1

⁄

4

" plug, make sure it is plugged all the way in.

•  Is it loud and distorted? Reduce the signal level at the 

mixer.

•  If possible, listen to the signal source with headphones 

plugged into the preamp stage. If it sounds bad there, 
it’s not the monitor.

•  Too much bass or not enough bass? 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 monitors to a different 
position, or moving your listening position.

•  Check the signal cable between the mixer and the 

monitor. Make sure all connections are secure. These 
problems usually produce crackling noises, hum, or buzz.

•  If connecting an unbalanced output to the MR5mk2 

balanced input, make sure the shield is connected to the 
unbalanced ground of the source and to pins 1 and 3 of 
the XLR.

•  If a CATV cable is connected to the system, try  

disconnecting it. If the hum goes away, call your cable 
carrier to check for proper grounding of the cable.

•  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 monitor? 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 monitor.

If you think your Mackie product 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 documentation. You may find the answer 
to the problem without having to send your Mackie  
product away.

•  Our favorite question: Is it plugged in? 
•  Make sure the power cord is securely seated in the IEC 

socket [6] and plugged all the way into the AC outlet.

•  Make sure the AC outlet is live (check with a tester or 

lamp).

•  Is the power [5] switch on the rear panel in the ON 

position?

•  Is the power indicator [8] on the front panel  

illuminated? If not, make sure the AC outlet is live.  
If so, refer to “No Sound” below.

•  If the power indicator is not illuminated, and you are 

certain that the AC outlet is live, it is possible the fuse 
has blown.

To remove and replace the fuse:
1.   Disconnect the power cord from the IEC socket.

2.   Remove the fuse drawer by prying it open with a 

small screwdriver. It will slide all the way out.

FUSE

3.   Remove the fuse and replace it with an  

equivalent-type fuse.

 

115 VAC unit: 1.6 amp slo-blo (T 1.6 AL/250V) 

230 VAC unit: 800 milliamp slo-blo (T 800 mAL/250V)

4.   Replace the fuse drawer by pushing it all the way 

back into the IEC socket.

  If two fuses blow in a row, then something is very wrong. 

See the “Repair” section on the next page to find out 
how to proceed.