Need Help! My Class A Amp Is Running Very Hot


Hi, currently I own a Luxman 590 Class A 30watts Integrated. After the unit running for more than half an hour if I put my hands on the top of the cabinet over or around the vents  it is burning hot , I even feel the heat on the sides of the cabinet, other than that the amp sounds good. Can anyone tell me if that’s normal or I should get it check out?
Thank you  in advance for your advice.
khmyjy

Showing 1 response by dodgealum

Given what you have reported and Al's usual helpful stats it sounds like the amp is operating at normal temps for a Class A design. This is the main reason I am not a big fan of some of these designs--it's not so much the heat they produce and the impact on room temperatures. I have concerns about parts longevity in an enclosure that produces so much heat. Things get stressed at those temperature levels regardless of what specs they might cite and the repeated heating and cooling as you power up and down will also likely take their toll over time. I feel the same way about tube units that are not designed to allow the heat to dissipate easily from inside the cabinet. One of the reasons I love a ZOTL design like my LTA Ultralinear is that it runs remarkably cool for a tube unit. This will likely contribute to less parts failure down the road.