Mackie MR5 speakers run hot even when not in use. Run very hot when using.

Check the input level. Sounds like the signal is being clipped.

Sound like either the crossover or the driver has blown or, if you're lucky there is a loose connection internally if you have only checked external connections.

yes - trs or xlr inputs will give you the same result, as long as you use the correct cables.

Make sure the mackies are off when you plug them in or you'll get a nasty thump. Equally, make sure the volume is down on your interface initially.

Swap speakers to find if the problem is the speaker. If the problem follows the speaker it will require repairing.

try hooking headphones to the output and see if the crackling is still there.

then, try it with the speakers, at a lower computer voume level and higher speaker volume level. perhaps the headphone output is too loud and distorting in the speaker inputs.

These parts can be ovtained directly from Mackie. Please call them and have both the model number and serial number of the MR5. There are differences sometimes in the "runs" which use different actual speaker drivers. having the serial number will insure that you get the proper replacement driver.

You can locate a service center here:

http://www.mackie.com/scripts/service_centers/search.asp

Dan

I would contact Mackie and see what they say. The MR5 is already protected internally by the built in amplifier circuitry as far as I know.They can be reached here:http://www.mackie.com/support/index.html

If it is under warranty, make use of the warranty immediately.

If it is out of warranty it comes down to whether you are adept at electronics.

The cause can be a blown speaker, or something electronic.

The electronic cause would LIKELY be a problem with the input filter caps that cause the voltage to "collapse" under higher load OR a bad power amplifier transistor or chip.

In any case, test equipment will be required to solve the problem.

You should order an exact replacement from Mackie since this is a reference monitor.

Consider putting a limiter or fuse in series to protect the speakers if this was due to overdriving it.

Hi there. Search "top hat". There are 2 different depths. Compare measurements to space available in and on the enclosure where you plan to install it. (bottom)
Thanks
Paul