Luxman 590axii ventilation

Assuming the shelf is just a little wider than the amp I don't think that is enough for that amp my friend.  It is almost 300W at idle.

Now, if you have plenty of width, say 5" or more on each side then you could be OK.

The 507 is 90W at idle and the 509 is 150W.  I own the former and I would not attempt a hotter amp with only 1."  I have it on top of a shelf and use riser feet to increase the air flow beneath the unit. 

I checked the manual I have for the 507.  They do not have minimum distances, but state "... do not install the equipment in a confined space such as a book case or similar unit."

Hmm yep I’ve got 2.5” on either side, wide open front and back. I saw that too in the Luxman manual - very specific about leaving an unspecific amount of space around the amp…

I just bought that int amp and will tell you that a lot of heat generates out of the top. Me personally, I wouldn't do it with just 1" of clearance on top. 

Tanks guys. This forum is amazing - answers in minutes! If I redesigned the shelves, how much would be enough? 5”? How much heat does that amp really put out? I’ve heard them called ‘space heaters’ but I only have experience with class AB and D amps. It gets pretty hot here in the summer and no AC, so not looking to literally add a space heater to my living room! Same heat as a fridge or other appliance?  I could go with a 507/509 instead, but I have a line on a good deal on the 590 and the reviews sound incredible.