AC Infinity T10 AIRCOM with Denon Test and Results, FLIR PICS..
What started the whole thing was I was board and looking for a cooling solution for my Denon 6500 that was quieter and more efficient then my make-shift single fan. There are a few choices out there but they get expensive for no more than what they do. Long story short after reading many others threads about cooling, often times the DIY route seems to work out the best, as in my case.
I have an open front AV "closet" that measures 2'x3'. The closet is behind my screen facing outward to the left so the noise from the equipment can be a little much for quite scenes as it bounces around the corner. There is no issue of heat build up in the area as the ceiling is also open to a large soffit. There is about 5 in above the receiver and about 3" on either side. I plan on putting up heavy masking curtains to muffle some of the sound in the future. My theater is basically dedicated to movies. I generally listen at very high volumes and the on screen indicator for energy usage is always above 50% to 75%.
Equipment (relative to heat production):
Denon AVR6500H using every channel and the two pre-outs. Video goes to an Epson Pro 6050UB 4K
Behringer NX6000D pushing 2 18" full Marty's.
There's more but are irrelevant to this test.
AC Infinity AIRCOM T10 front exhaust.
Single 4in Sunon 120v 0.13amp fan.
Dual band temperature reader. To remain un-named.
Two J type thermocouples, response time about 0.5 sec.
Updated with FLIR pictures of no fan and with Fan. Also some FLIR pics of the projector...In hind sight I should have taken pictures with my FLIR...I could update this post with FLIR pictures of the single fan if anyone cares as I have already packed up the AIRCOM for return..
For the tests I played Matrix Reloaded 4K at a volume of 65 to 68. Most readings were during the Zion cave dance or courtyard battle with Smith. I took amperage readings for the receiver and amp but they were pretty much the same for either cooling method. I placed the thermocouples on the surface of the receiver in the two locations I know to be the warmest. Ambient air in the room and "closet" was a steady 68-69 degrees, according to another small reader I had placed a few feet away.
To test the recovery I left the AIRCOM off and let the receiver warm up to 99 and then turned it on in AUTO. This did not take long since when off the AIRCOM is like placing a blanket on the receiver. The AIRCOM brought the temps down to 80 in about 3 min. After some time at a lower volume to let the receiver cool I continued the test. I tried the Auto and Smart modes throughout the rest of the movie. I left the temperature set to 80 for either mode and set the variance to 2 degrees vs the factory 4. During heavy action scenes the AIRCOM seemed to maintain the 80 degrees with max fan speed, and would continue to run at max long after the scenes were finished. In smart mode the temp. hardly dropped between scenes for the fans to decrease speed. There were a few times it dropped to the lowest setting but not for long. My reader confirmed this as it read 79 for the front corner and 71 for the back. After one of the long scenes I could start to smell the Denon getting hot! I lifted the AIRCOM and felt the top of the receiver and was shocked it was very hot in the front center, near its thermocouple and very warm in a few other spots. This is where I'm sure the FLIR would have shown the temperature variations on the surface of the Denon.
Single fan placed front mid center-
I re-ran the movie and monitored the same scenes. The fan runs at one speed constantly so there's no settings obviously. During the entire movie the surface temperatures of the receiver never went above 72. At any time I could place my hand anywhere on the top or sides and not feel a single warm spot. The air coming off the fan was warm but never hot.
Overall the AIRCOM is heavy and built very well, you could confidently place other things on top of it. The variable fan speeds and setting options are nice. If there are long delays between high demands, and the fans are in the right spot for your application it would work. For me the on and off sound would be just as annoying as if it were to stay on. The location of the fans does not work well for the Denon 6500. This combined with the fact the entire bottom is closed except for the fan openings doesn't allow any air movement elsewhere. The AIRCOM is only going to pull air in from the sides perpendicular to the fan openings. This is not where the heat is generated from at all for this receiver. If the AIRCOM had a plus or T configuration of fans combined with a perforated bottom it would have me sold. One or two well placed fans are far better for this comparison. The AC Infinity AIRCOM S7 12 would probably do the trick, but is going to let the receiver fluctuate between 84 and 88 degrees. For me the cost of running and the noise produced of a single or dual constant running fan to keep the temperature around 72 is worth it..
Last edited by Imjaybird; 02-16-2020 at 05:45 PM.
Reason: Update title