(14-Oct-2016, 17:51)Antoine Wrote: [ -> ]That's the 'flattest' in room response I've ever seen without applying serious DSP for room correction. I'd say it's almost impossible unless your system is outside, in an anechoic room or a VERY well treated room. I doubt the measurement is correct unless you've put some serious effort into treating the room. If all checks out right, hats off! 
I've never seen anything that flat published online either, even with room correction!
(14-Oct-2016, 17:47)dbilling64 Wrote: [ -> ]In my opinion (and as a bass player), the audible effect to music is that with SAM@100% - bass guitar sounds fuller, but somewhat un-naturally forward in the mix. With SAM@0% bass sounds better - tight, distinct but not over represented in the mix and better than SAM switched off.
I'm also fascinated by the smallish measured changes in my system as I change SAM, but the huge subjective impressions.
I'm leaning to not 100% trust in room measurements, I think the brain fixes a lot of the big errors more than we might expect, it knows we are listening indoors and corrects. Big room nodes do need fixing though.
Try dialling SAM down to and listen, if still too much lower it again. I'm at 10% with stand mounts, that now sound full range up to a certain volume.
At listening position , you actually want a rising bass from 100 hz or so , +4-6db at 20hz , and a treble that droops from 6-8k to about -2-3db at 20k to sound real good , flat tends to be bass shy and a bit thin sounding
(14-Oct-2016, 17:51)Antoine Wrote: [ -> ]That's the 'flattest' in room response I've ever seen without applying serious DSP for room correction. I'd say it's almost impossible unless your system is outside, in an anechoic room or a VERY well treated room. I doubt the measurement is correct unless you've put some serious effort into treating the room. If all checks out right, hats off!
The screen shot I posted is with smoothing applied to the data to highlight the effect of SAM on the bottom end. The raw data does look less flat particularly higher up the spectrum.
The work is being done by a specialist company that does recording studio preparation work. It is a dedicated listening room so I don't have any constraints on aesthetics or have to compromise for other uses of the room. The net effect is that it does look a bit like a recording studio now - which I don't necessarily like - there are cloud panels hanging from the ceiling and absorption/diffusion treatments to all 4 walls. The audio improvement is significant though - albeit at medium to high volumes. Low volume listening can sound 'flat' and I may need to remove some of the absorption to get a better all round compromise.
Sent from my iPad using Tapatalk