Originally Posted by batuche
Reporting back with our findings.
After repositioning the AVR it remains quite warm if not hot on top - please note this high heat situation exists ONLY when junior is playing his WiiU, which is connected to an HDMI port on the AVR and seems to demand more resources from the AVR. We then tried placing a small desk type fan beside the unit and VOILA! Heat dissipation no longer seems to be a problem.
Understanding this means dissipation and does not "cure" the demand/draw on the AVR which causes the heat in the first place, thus while we can and will do something to alleviate the heat build-up while using the WiiU, I think the ultimate cure may be a separate power amp, 3-5 channel. That being said, it's a matter of finding one that fits our budget and meets our power needs. Maybe back to the Emotiva UPA-500 or the like as the "Final Solution," eljay.
I took another look at the thread and see that your system has a sub - of sorts.
Mirage Omni S8
Woofer 8" woofer with ribbed elliptical surround
Here is some relevant technical information that can guide one while choosing subwoofers::
The following lists the maximum undistorted SPL for a SOTA 8" driver (19 mm Xmax). Just to reveiw Xmax is shorthand for linear travel. Cone area and linear travel set the high water mark for low bass extension and dynamic range. The only way to beat this kind of limitation involves outsized enclosures with complex internals such as is sold by Danley. http://www.danleysoundlabs.com/products/subwoofers/tapped-horns/th-spud/
would be an example. It is 11 x 48 x 45 or about 16 cubic feet, about as much volume as a home freezer. It is solid technology but has shall we say limited WAF. ;-)
One key factoid is that the indicated maximum undistorted output of the ideal SOTA 8" subwoofer is only 90 dB. I say "only 90 dB SPL" because the threshold of hearing at 20 Hz is 85 dB. 5 dB above threshold mostly translates into imperceptible. So not only is this sub profoundly limited at in the lowest octave, it is basically a non-starter.
Another key point is that the 18 mm Xmax driver I modelled is probably science fiction - the largest Xmax I can find for a real world 8" woofer is more like 12 mm. The odds that even such a far less capable subwoofer driver would show up in a ca. $200 powered subwoofer is slim and none.
Seems marginal for one device. 2-4 such subwoofers could be interesting.
In general subwoofer manufacturers seem to decline to provide actual data for driver Xmax. The above is a charitable view of what a very good commercial sub with an SOTA 8" drive can possibly do.
Just to review, the following is similar information for a SOTA 12" driver:
Seems potentially useful but not spectacular. A pair could be interesting.
Just to review, the following is similar information for a SOTA 18" driver:
A single 18 or a pair of 12s is the beginning of a system with interesting amounts of bass over the full audible range, but still short of what hard core HT enthusiasts seem to find impressive. The point here is that EFX can go far lower than music, and this is what is probably happening with your Wii users. Games are all about EFX.
It is not uncommon for people to run their entire system several dB louder to compensate for a marginal subwoofer.Edited by arnyk - 1/6/14 at 4:23am