Originally Posted by Luke Kamp
First off you should run audyssey on the subs that will be used. Its calibrating for different frequency responses of the different subs. Audyssey has been known to boost down low at times. Was it repeatable with audyssey turned off?
If it was f'in irene, that has high levels at 6hz.
Jeff uses the 4000 watt amp on a single driver in the OS, and we heard the captivator on the 4000 watt amp at one of the KC shootouts. Jeff has said the drivers can take a good beating and after him turning it to 11 on that ported 4000 watt I believe him.
Some limiters can make bad sound as well when pushed hard enough. Amp clipping or clipped signal can sound bad as well. I believe only vendors can get the dsp for those amps so not many will know the implemetation.
Anyways contacting Jeff to ask him seems like a good idea. Report back your findings.
Thanks for your thoughts Luke -- I did do that (run Audyssey with the S2s), and definitely know why some are surprised that within the partameters of the Audyssey mix, that any issues should arise. I don't favor the sub being down so low that it is "well integrated" into the sound field. I want it dominant, overpowering, potent and mighty. I didn't even play around with that mix much to bring those characteristics forward. In fact, it was such a critical disappointment that within minutes I just put my old subs back in the room, reran Audyssey without the S2s, took the old subs back out, then put the S2s back in (perhaps I should explain that before I did the initial recalibration with the S2s, I just inserted them into my old subs' calibration model, after disabling the old ones, and liked what I was hearing).
I'm sure purists disfavor and/or abhor this approach, and I'm equally certain it plays a major role in why my subs overdrove on BLACK HAWK DOWN. But that is the sound I was looking for and why I spent all this money to get these beauties. And let me say, I'm not at all unhappy, in fact I'm delirious to be getting what escaped me for a good number of years with the old subs (dual SNELL 1800s).
And as I've said, I was not taken completely by surprise that these overdrove, that is why I leave one sub uncovered and illuminated, so I can gauge how close overdriving might be -- and I make notes on all my threatening passages -- date, blu-ray title of course, exact time of threatening passages, all volumes, etc. to know in advance where the limits are. That is what I was doing playing BLACK HAWK DOWN -- went to the spots in my previous years old notes where my other subs overdrove, and viola, same thing here. In fact, I was spending some good quality time that day going over all my reference standards to set the new acceptable levels to get the absolute limit out of peformance.
So I did wonder about the internal protections -- what are they intended to do if not prevent a pulse from causing driver overexcursion?
In any event, I'm amazed at what you report with the single CAPTIVATOR and 4000 watt amp. My amp is all the way at zero, the Audyssey adjustment is at -15 -- all the way down, and I currently listen at -15.5 overall volume versus the -13.5 I used to, and still! -- I have also used the post-Audyssey tone adjustment to take all the bass out of the sub channel to avoid scaring myself!
So it is very hard to imagine why my experience seems so radically different -- I cannot fathom turning that dial any further up!Edited by Emaych - 6/3/13 at 10:18am