Originally Posted by aron7awol
Have you already maximized negative delay going to the fans? It's hard enough to get enough negative delay for TR devices, I can only imagine how much would be ideal for fans. It's gotta be a half second to a second, no? I'm sure it's still really impressive and worth doing, but I'm curious.
Yeah, they are on max neg. delay. Which isn’t a whole lot on our Denons, LOL. And for some reason it felt better when i inverted the signal, but that might be placebo...
And as hard as it is to measure/time align TR, measuring this is even worse!
It is worse on short burst effects, like a single gun shot, where the power burst is to short to get the fan up to speed, and if it does, it is delayed.
But like a explosion(longer signal) or the before mentioned helicopter scenes, it is actually surprisingly effective. And the delay is only when the effect start. When the signal/effect is over, the wind stop immidiately(easier to decrease flow than to increase. Same as starting a ceiling fan. When started, it usually goes a bit of time until you feel the flow, but when you stop it, you feel the decrease almost immidiately).
It is impressive the kind of flow you can get even at 7-10 ft, but as i said, the delay gets worse the more distance. When i watched AHF i moved the fans a bit closer, about 5 ft in front of me, and that helped both for flow and with less delay. Granted when watching movie, the lights are off, so having a couple of big fans on front of you isn’t a major problem, but moving them in and out could be cumbersome, LOL.
You need to get the direction of flow pointed straight at your face/upper body, so if you move them in and out, swithing the eTauro to "always on" while adjusting the noozle works great, and then just switch back to "signal mode", and press play
So the difference between having them on level1 and level 3 is kind of logical:
On level1 they get a bit easier up to speed(less delay), but the max effect is a bit less.
On level3 they need a bit more time to get up speed(tiny bit more delay), but they have a noticable more pronounced effect on big scenes(more dynamic range), like the afforementioned explosions and helicopter scenes. Actually very impressive.
Like using a gear up or down on your car.
And like i mentioned, i thought it would work fine having them just on the floor angled up, and on a normal couch(non-recliner) it would work fine, but a recliner seat simply diverted most of the airflow underneath the foot support, acting like a wing for the wind.
Settings wise, i now run with no extra LPF, other than the AVR’s 120hz, this seemed to help getting them up to speed during LFE effects compared to 60hz or below LPF, and i have a rising house curve of about 20dB from ~30hz and down.
Although using the voltmeter showed that the voltage varies depending on signal strength, i am not sure if it is pulse modulated or voltage(no electrician), and if how it regulates voltage is why the fans make that "stuttering" sound when trying to start, but when it works(gets the "right" signal), they work pretty damn impressive
Going forward i would have to make a more permanent stand for them than the boxes they came in, LOL, and i may look into removing some of the plastic surroundings to slim them down as much as possible. As they are a bit bulky, LOL.