ARC Ref 6 plexiglass cover

 The proper fix would have been a hole above the 6550 to act as a chimney and vent the heat.  The extra thick cover may solve a symptom but not the problem. The cover is still too close to the 6550 and trapping too much heat. Excessive heat is bad for electronics. For this reason I run my Ref 5se without a top.

You could go to home depot and get some 1/4 inch nylon spacers to put in between the top and the chassis. You may have to get some longer screws. This would stop most dust from getting in and still let out the heat.

@lostbears ...The proper fix would have been a hole above the 6550 to act as a chimney and vent the hold.                                                                        Yes but at least with the thicker plexiglass for those that want to keep the cover on at least it wonlt melt. And i just got dont listening to it for about 2 hrs just now and the top was hot above the 6550 but not where it would feel like it was getting soft for the heat from the thinner original cover. This cover is so much thicker than the original cover that they even beveled the front and 2 sides of it.. Looks very nice too.. I would highly recommend it over the original thinner cover. Also the feel of it is like a piece of thick piece of glass compared to the chintzy thin one.

 Dweller, That is a very good idea. That would help vent heat and still look good.

 tattooedtrackman, I have no doubt the new cover looks really nice. I just wonder how hot it actually gets inside the case.