u/Academic_Lie_5627

Hi guys just wondering if I should install some sort of the extractor fan to extract all the heat from Denon and Rotel amps. I have openings at the back of the TV unit plus 20cm distance between the cabinet and the back wall.

Guys just bought a new centre speaker and installed it today made the Audysay calibration it makes cracking noise do you know what would it be ?