@seri201, as many have stated above I did set my Denon AVC-X6500H to 6 ohm as my Monitor Audio setup, see my sig, have a mix of 8 & 6 ohm, but soon switched back to 8 ohm as it did indeed seem to run hotter. Loads of good folk explained why and my experience seems to concur, though I’m never pushing the output extremely high, multichannel music or films.
As it’s in a long low cabinet with only an open back and a few gaps at the sides and front I use an AC Infinity AIRCOM T8 air cooler that pulls heat from the top of the AVC, with three slow fans, and pushes it out of the back. This is automatically set to keep it below 33C top case heat and I never hear it.
Hope you don’t mind a question with your AVC-A110, or anyone?
... probably applies to the X6500H
I’ve just upgraded to a A110 from the X6500H, mainly for a sound quality upgrade, which it is, with bit more headroom and thinking of bi-amping my Monitor Audio Silver 500 6 Gen main pair - I only use 6.0.2 hence I could use 4 amps for the front stereo pair using dual cables. Plus a bit more future proofing with HDMI 2.1/HDCP 2.3 and, as the newer lower ranges no longer have the Denon HD Link - to retail this for use with my Denon SACD/CD for, hopefully, many years to come.
The one thing that’s annoying me, ‘just a little’, with the the A110 is that it doesn’t automatically change between my selected Multichannel Stereo ‘mode’ for two channels and Dolby/DTS/Atmos etc ‘mode’ when the audio input changes (HDMI or Optical). The X6500H did this just fine, but with the A110 I have to manually check if only two channels are seen, using the Denon App, and then press the Music mode which I’ve set as Multichannel Stereo. Then, when I see Dolby/DTS 5.1 or more on the input I have to press Movie mode :-(
Otherwise I’m more than happy with the A110, as it’s sounding that bit richer and sweeter (early days and need to redo Audyssey), plus it’s got more headroom when needed. It also runs cooler to the touch, probably also thanks to the single heatsink of the X6500H being one line across the front, whereas the A110 has separate heatsinks across the left and right side with the massive transformer in the middle. Each of these three hot items sit under a fan of the AC Infinity cooler.