If you already own this mixer and love its sound, do not despair. The audio community has engineered several solutions.
Do not put anything directly above the N11999. Leave a 1U empty space. Even better, install a 1U vented panel with a 12V computer fan attached to the back, pulling hot air out . behringer n11999 hot
Look at the N11999's case. It has small vent slots on the top and bottom, but if you rack it, those vents are blocked by other gear. Behringer designed this for studio desk use, not tightly packed server racks. The unit relies on convection cooling (hot air rising), but because the vents are partially obstructed by the fader PCB, the hot air sits inside the chassis and cooks the metal shell. If you already own this mixer and love
This 2-channel tube equalizer also runs physically warm and provides "hot" output levels for driving long cables or tape machines. Leave a 1U empty space
Using an incorrect or third-party power adapter can cause internal components to work harder and generate more heat. Verify your adapter matches the voltage and amperage requirements on the device's rear panel.
For many Behringer analog mixers and audio interfaces, generating heat is a standard part of their operation. Models such as the Xenyx 1202FX