- Thread Starter
- #1,101
You can set the speakers to large or small depending on your needs. This won't impact the down mixing issue.
I have never tried it, but get a
USB powered PC fan, and then connect the USB cable to a phone wall charger. Experiment with having it blow over the top of receiver, or pull the air off the top of your receiver.
Noctua is well known for making quieter, long-lasting fans and I think they have a few models. For example
https://www.newegg.com/noctua-nf-f12-5v-pwm/p/1YF-000T-000M6
I envy you so much... it's almost 100 USD for the sole delivery of AC-infinity to russia which basically doubles the cost for what it really is - a fancy box of fans which I really really want for some reason. and there are no alternatives either. And I already paid for receiver 30% more than it costs. God I hate living so far away it costs double to get something delivered
Surely (don’t call me Shirley), there is a cheap, USB powered laptop cooler available?
I agree with the extraction from above. As for blowing for below, it is more complicated because it will be necessary to raise the amp.
The noctua are very good, just like the Be quiet, designed to be lying down. Only you will need an adapter cable to be able to connect the fan to usb.
I think maybe it is supposed to say blowing FROM below?
Like fans on a heatsinks they can push or pull.
I have two fans mounted flush under the top vents in my cabinet PULLING the air up from below and out of the case.
It seems as though putting the fans under the AVR and pushing air through it up towards the vents(I am assuming that what was meant) would be less efficient and end up just blowing the heat all over the inside of the cabinet instead of sucking it up and out from a top mounted pull fan.
I think the entire cabinet would be cooler in a pull configuration but is the actual AVR cooler? I don't know.
I don't think you need an external amp at all based on the above info. If the volume on the onkyo is 55/100 then on the Denon it would be around 55/98, or -25 so you are nowhere near reference level. After you run Audyssey, you may get close to reference level of 85 dB average from you main mic position with volume position near 0 (+/- a few dB), or between 78.5 to 82.5 in the absolute scale.
In your situation, if you listen at reference level then you would need about 140 W with one speaker playing but again, it looks like you are listening to much lower levels. The 3700 will be fine, but I highly recommend you purchase a fan or two and put them on top of the unit, for longivity.
https://www.amazon.com/AC-Infinity-...HSW4VGGW2G4&psc=1&refRID=34B6KFQF0HSW4VGGW2G4
If your AVR is inside a locked rack style cabinet why couldn't you just take off the shell and run it naked just like your picture? Lots of room for fans there!Too bad there's not better venting over the top of the heatsinks where one could install a Noctua fan exhausting out of the case. Denon could learn a lot from looking at how to create positive case flow design from the PC industry.
If your AVR is inside a locked rack style cabinet why couldn't you just take off the shell and run it naked just like your picture? Lots of room for fans there!
I could see that working just fine in my cabinet. All you can see is the front anyway. Lots of airflow.
If your AVR is inside a locked rack style cabinet why couldn't you just take off the shell and run it naked just like your picture? Lots of room for fans there!
I could see that working just fine in my cabinet. All you can see is the front anyway. Lots of airflow.
I received the Denon x3700h first week in July. When ever I touched it the heat on top was extreme. So I ordered the AC Infinity Aircom T10. Received it last week. It works extremely well. The receiver is nowView attachment 76627 at room temperature. The reason I bought the T10 was I wanted it to blow out from front not top or rear.
If air can flow in and out of the rack, so can dust which will settle on all of the components. This is why many PC cases are typically designed for positive air pressure inside with limited intake carefully controlled with a filter.
I think if they put intake fans on the back left and right sides with filters, and then even a single 120mm exhaust fan out of the top front, with positive pressure. All other vents removed. That would do it, and you'd probably barely have to run the fans.
Or maybe it just needs liquid cooling
Hello!If your source is 8 channel and you play 5.1, it will cost you about 2 dB. So not that much of a hit.
If air can flow in and out of the rack, so can dust which will settle on all of the components. This is why many PC cases are typically designed for positive air pressure inside with limited intake carefully controlled with a filter.
If your AVR is inside a locked rack style cabinet why couldn't you just take off the shell and run it naked just like your picture? Lots of room for fans there!
I could see that working just fine in my cabinet. All you can see is the front anyway. Lots of airflow.
He's not wrong that MOST people won't run into this situation in the real world, however since Yamaha is not exhibiting this same downmixing issue, anyone who is running a 5.1 or 3.1 configuration for movies is going to experience a drop in SINAD when the Denon downmixes.
AVR DAC Audio Measurements
I tried to save myself work and not test this but you all wouldn't let me. After all, the most common application is HDMI In, speakers out. But let's see how digital input and pre-amp output performs. I started with testing HDMI and took a lot of messing with menus to get the darn thing to output 2 channels and no folding of other channels into Left and Right. Disabling processing, etc. Here is that output with volume level set to 0 dB: