No sound coming from new MR5's - Mackie MR5 MR5 Reference Monitor

If there was no signal going through them, they shoulldn't overheat. However, if while they were on the AC line had a power surge, it's possible it took them out. It's time for the repair shop to see what's up.

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.

You may have blown a fuse in the amplifier. Refer to Appendix A: Service Info in this guide http://www.mackie.com/products/mr5/pdf/mr5_om.pdf under No Power section, and if the fuse it not blown, try some of the solutions under No Sound. Hope this helps!

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.

Check for a defect on the solo switch. The rude lights when ANY solo is on. Sometimes the switches stick mechanically and don't fully come up.

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.

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