Originally Posted by Legairre
Oh no reason to be embarrassed there's a lot going on with some things in Genesis and others in the Anthem itself. The High Frequency Extension is the highest frequency the sub will play. You should leave it to whatever Genesis sets it at. As you know the Low Frequency Extension is the lowest frequency the sub will play. So if your HFE is 250Hz and your LFE is 15Hz then your sub will play frequencies sent to it between 15-250Hz so your sub has a high and low limit to what it will play..
The subwoofer crossover is actually in the Anthem on the Bass Management screen and mine was set by Genesis at 120Hz. I'd set the sub to flat and let it play as low as it is capable of. The sub has an internal limiter so you won't damage the sub.
Sorry but this is not true, maybe there were a misunderstanding in my previous post. Even if you set HFE to 250Hz the subwoofer WILL NOT play so high. Or better, the subwoofer itself could be able to but it won't because:
1) the .1 channel (LFE) is bandwidth limited to 120Hz. Always, right in the content, as it's up to Dolby specifications. Furthermore DTS specifications even limit it to 80Hz as far as I know.
The most of LFE channel is in the 20-80Hz range, little information in the 80-120Hz range, nothing above.
2) on the receiver there's a filter called "LPF for LFE" usually set to 120Hz and this is the higher frequency the subwoofer can play, even if you let Genesis EQ up to 250Hz (according to HFE).
3) nobody would like to have a subwoofer playing above 120Hz as it would become very localizable. Low frequencies become directional starting from around 80Hz...
All of this is not "my opinion", is the way the things are. A subwoofer tipically plays till 120Hz unless you have very small speakers requiring a crossover (crossover is a different thing and inherent to bass management: redirected bass from speakers to subwoofer) higher than 120Hz but usually we all have crossovers set to 80-100Hz.
What I explained above moved myself to ask the reason behind such a high HFE value set by Genesis, the reason why Genesis prefers EQ up to 250Hz even if the subwoofer will never play such higher frequencies.