I own and use an old school Sunfire Signature sub. I have also recently purchased an Emotiva MC-1 Atmos processor and also have an Emotiva UMC-200 5.1 processor still running in the system. I prefer the UMC-200 for analog sources and those rare times when I feel the need to use the internal DACs in my OPPO disc player. I can choose which processor is feeding the 5 channel main amp and the subwoofer by using a mechanical 6 channel switch unit.
Each of the surround processors is equipped with EMO-Q, which is Emotiva's house brand room EQ routine. The MC-1 has the newest EMO-Q version with additional features and functionality, but both Emotiva processors basically work the same way for room EQ. For the UMC-200, I have also used REW to setup and double check the results. The EMO-Q and the REW results are surprisingly close in most bands.
The processors test and set speaker gain and distance based in test tones picked up from their microphones. My sub is about 11 feet from my sweet spot/mic location. When I run Emo-Q from the MC-1 it returns 26.5 feet as the distance to the sub. When I run EMO-Q from the UMC-200 it returns 23 feet as the distance to the sub. For both processors the EMO-Q gets the main/surround distances correct to within an inch or two.
I have never found out the reason for this. I haven't tried to check this with REW either. I'm not even sure if REW will do this type of test.
I tried an experiment the other day and ran the calibration routine for both processors with the pickup mics at 1 foot in front of the subwoofer cone. It returned 6 feet for the MC-1 and 5 feet for the UMC-200.
AFAIK the Sunfire has no built in delay and no DSP. It does have configurable analog crossovers and level controls.
Any ideas on what is causing the EMO gear to see such a large delay with the sub signals?
Each of the surround processors is equipped with EMO-Q, which is Emotiva's house brand room EQ routine. The MC-1 has the newest EMO-Q version with additional features and functionality, but both Emotiva processors basically work the same way for room EQ. For the UMC-200, I have also used REW to setup and double check the results. The EMO-Q and the REW results are surprisingly close in most bands.
The processors test and set speaker gain and distance based in test tones picked up from their microphones. My sub is about 11 feet from my sweet spot/mic location. When I run Emo-Q from the MC-1 it returns 26.5 feet as the distance to the sub. When I run EMO-Q from the UMC-200 it returns 23 feet as the distance to the sub. For both processors the EMO-Q gets the main/surround distances correct to within an inch or two.
I have never found out the reason for this. I haven't tried to check this with REW either. I'm not even sure if REW will do this type of test.
I tried an experiment the other day and ran the calibration routine for both processors with the pickup mics at 1 foot in front of the subwoofer cone. It returned 6 feet for the MC-1 and 5 feet for the UMC-200.
AFAIK the Sunfire has no built in delay and no DSP. It does have configurable analog crossovers and level controls.
Any ideas on what is causing the EMO gear to see such a large delay with the sub signals?