Onix A-120MKII Gets hot fast.

Looking at a picture of the integrated, it appears that there are no external heat sinks and only a small slotted area on the top of the case for convective cooling. If your stacked equipment covers those slots then you are almost certainly going to have a cooling problem. I also note that the amp does not double down from 8 - 4 ohms, and that even though the nominal impedance is 8 ohms, the minimum is spec'ed at 4 ohms. So my guess is that the amp may be struggling a little to make the necessary power into the 4 ohm portion of speaker's impedance which causes it to run a little hot and then the stacking of the cases is making it worse. And of course the component on top is also releasing heat, some of which is radiating downward to the amp.

Hello,

This problem of stacking will be fixed asap. I live in SWFL so it's very warm inside because I don't mind the heat all that much. I keep the AC around 82 for me which may be too hot for a hot running amp. As far as 8 to 4 ohms there isn't much I can do with this unit. I sure appreciate all the advice folks. JJones

Let us know, but I bet you will see an improvement if you make sure the amp gets adequate ventilation. If its also got slots on the bottom, you may get some additional improvement by raising the unit up off the shelf w blocks under the feet.

Well-

There are now four inches clearance on the bottom and eight inches above the amp so we shall see if it can stay cool. Can't turn her up unless I am home when the crabby old lady across the street isn't. Not a SRV fan.

She still runs pretty hot but hasn't shut down yet. Sounds a bit better with the digital units further away from the amp. I may now keep this thing for a while longer. Thanks very much for all the help! JJones