Originally Posted by eric-t
While I do have an excellent sub, it set mine to 80hz
When I ran dual subs (two different brands) it did set it at 80hz once and 120hz another time. It may be the way I placed the mic for measurement as it set it two different ways.
Doesn't sub placement play a factor on how well the sub will measure?
Yeah, this is the part I get confused
on as well. I have never been able to reconcile what ARC is doing with crossovers and response cutoffs with my scientific knowledge
As an example here's my most recent ARC Targets auto settings for response cutoffs for a 5.1 speaker configuration:
L/R: 60 Hz (Revel Concerta F12 ±1.0dB from 58Hz to 18kHz)
C: 100 Hz (Revel Concerta C12 ±1.5dB from 85Hz to 15kHz)
LS/RS: 80 Hz (Revel Concerta M12 ±1.5dB from 65Hz to 15kHz )
Subwoofer: 80Hz (Revel Concerta B12a -3dB @ 28Hz ±0.5dB in the pass band)
The auto measurements are pretty good albeit somewhat conservative based on their -3dB frequency. The Revel specifications for In room frequency responses are noted above in brackets.
Here's the text from Anthem:
Response cutoffs are not crossover frequencies although the behavior and purpose is similar. Response cutoffs are part of equalization, but not necessarily bass redirection, and are meant to not stress speakers at frequency extremes. Crossover frequencies are uploaded to the unit's bass manager during the upload procedure and are not necessarily the same as the response cutoff selected here.
Given this text then one guesses that ARC is equalizing the front speakers down to 60Hz, the center channel down to 100Hz, the surrounds down to 80Hz and the subwoofer up to 80Hz. Since the speakers are set to small all bass frequencies below 80Hz and the LFE channel are directed to the subwoofer.
But once you upload the ARC settings for Music and Movie mode what happened to the original non-ARC crossovers? What is the new crossover if it is not the cutoff frequency?
Crossover frequencies are uploaded to the unit's bass manager during the upload procedure and are not necessarily the same as the response cutoff selected here.
If you go into setup and look at the settings for Bass Management after uploading the ARC results the only thing you see is the Movie or Music mode settings from ARC.
What is happening between 80Hz and 100Hz on my center channel?
If anyone can answer these questions please go ahead. We would all like to understand how best to maximize our listening pleasure.