What are the flattest measuring studio monitors?

[terryforsythe]

You cannot address modes which lead to cancellation using EQ. Doesn't matter if it's Dirac or GLM or MA1 or Audessey etc.

Here is the frequency response at my listening position (3m) in my family room (modified Elac UBR 62 speakers and Velodyne HGS-18 sub) back when I use to EQ all the way. (Currently I only EQ at the listening position up to 400Hz or so). This is with Dirac Live and some manual EQ using a miniDSP Flex HTx. The graph probably has 1/12 smoothing applied.

Below is the frequency response at my listening position (2m) in my office (KEF LS60 speakers) back when I use to EQ all the way. This is with all manual EQ using CamillaDSP. I don't remember if this is the left channel or right channel, but both channels were about the same. The graph probably has 1/24 smoothing applied. (Some, if not much, of the THD rise below 35Hz is due to the walls, and things in the room, vibrating - it is better when close mic'd).

Both rooms have significant modes.

 

[terryforsythe]

Although multiple subwoofers are the best way of dealing with room modes, especially over a wide area, having multiple subs is not a practical solution for all people and all rooms.

As seen in my frequency response graphs posted above, when tuning for a particular listening position, DSP can be quite effective at addressing room modes, including dips due to room modes. Indeed, in one system I only have one subwoofer, and in the other system I don't have any! The caveat is that you want to make sure you have components that have output capability required to fill in the dips at your listening SPL.

In my office, my KEF LS60 speakers just make it within the CEA-2010 distortion limits around 23Hz, as measured at my listening position, at the upper end of my listening volume. That is a subwoofer specification, though, not a speaker specification. I have a PEQ at 26.7Hz I could dial back if for some reason I decide to play the speakers louder, which is not likely.