Determining LFE cutoff?

[Pulstar]

Hello, I have the Inspire 6600 6.1 analog speakers from Creative, and knowing how lovely the chaps at Creative are, I don't think there was any in-depth documentation with it (prolly reserving it for their Gigaworks line).. Now LFE is a bit confusing concept, and I googled for some audio diagnostic software to no avail. How do I determine if my satellite speakers can handle low freq sounds? And what value to set AC3Filter/FFDShow's LFE cutoffs (for expanded stereo signals)? btw I have Realtek AC'97 audio which has its own Subwoofer (not LFE) slider as per latest driver. It's all too confusing! :scared:

[frank]

LFE is an additional channel made for deepest sound signals
(<30 Hz) in the cinema! There are speakers with 2 meters diameter behind the screen. Most people don't know that.

Do you have such equipment?
No? Then let it be.

THX systems have a SPECIAL boosted LFE speaker. But the specs say that the front speakers have full range!
That's why the Dolby Surround II downmix needs NO LFE.

[Pulstar]

Thanks for the reply, but I'm only asking about LFE on multimedia PC's not hi-end HiFi equipment. 6-channel AC3 from commercial DVDs has a separate subwoofer channel that's not the same as LFE? Or is the naming conventions overlapped? Again lack of documentation isn't helpful.