XTZ Room Analyzer Measurement Results -- Thoughts?

Hello,

Did a bit of toying around with XTZ this past weekend for the first time in my listening room. I'm actually pleasantly surprised by the results but I did keep my expectations fairly low not knowing how the room would measure considering zero treatments, very little furniture and one small throw rug on the floor that I got at Lowes on discount...

Anyway, here is the Room Analyzer Results as taken from the sweet spot. At first my testing wasn't showing any "Modes/Nodes" so I ended up turning up the volume a bit more (SPL Peaked around 93 during the Full Range Tests) and low and behold a single mode appeared at 38hz.


I then moved onto a series of Full Range tests. This one here shows the stereo results of my main speakers from the listening position. Decay times in the Midrange are pretty bad I think?


125hz = .53
250hz = .62
500hz = .65
1K = .63
2K = .59
4k = .5

Next up was another Full Range test where I did one channel at a time and then overlay ed the results to see how things looked. The green "dashed" line is the Right speaker which from this view appears to be the culprit of the previously mentioned mode at 38hz.


After seeing the measured results of the two channels I did an Export of the "Ambient" graph data into Excel from each channel to take a closer look at how much difference there was between them from the sweet spot. The graph below shows a 1000ft view overlay in stereo of the channels thru the Midrange


Taking a zoomed in closer look at the above results I decided to see how much variation in output (DB) was taking place between the two channels as heard from the sweet spot. I only focused in on the Midrange numbers from around 125hz-5,100kHZ. The data shown by the "pink" line was acquired by subtracting the DB output values of both channels to see the difference.


Any suggestions/comments on how things look would be much appreciated. Also please feel free to correct anything I may be interpreting incorrectly or have done wrong while gathering these numbers.

Thanks

Adding a few extra pics of the room layout. Red "X" is the listening postion and where all measurements were taken from.

Room Size = 24L x 15W x 8.5H
Room width changes to the left of seated postion to 13' W due to staircase
TV & Monoblock Amps shown are not in place yet but will be in the future
Speakers are B&W 803 Diamonds (Front Ported)
Amp is PASS Labs X250

Room View #1


Room View #2


XTZ Room Analyzer Sugested Corrections. -6.5db cut @ 38hz


Corrected Heat Map


Thanks

Thanks for taking a look. When I posted the pictures I was kinda hoping that they would allow someone to click on them to open up to full size and or include the Inline attachments at the bottom of the post so they could be better viewed but unfortunately that doesn't look like an available option.

The floors are all bare wood except for a small throw rug (not shown) that is located on the floor between the seated position and the front plane of the speakers. The rug runs almost the full length of the distance between the Right/Left channels (The rug is 7ft long and 5ft wide, speakers are 8.5' apart).

I'm kind of stuck in terms of where I can move the seated position because the base of the staircase bumps out into the room about 6" or so blocking me from moving the couch over to the left more. I didn't think it would be a worthy sacrifice to move the seated position 6" closer to the speakers just so I could avoid the bump. I have considered breaking out the circular saw a few times and going to work on the stair case though which is an option if need be :b

From the seated position my ears are almost exactly 9'ft from the front plane of the speakers. Each speaker is 3'ft from the front wall. Right channel is about 1.5ft closer to the side wall then the left channel is to its immediate side wall. The positions were chosen to accommodate a future TV that would be mounted on the front wall as seen in the diagram and so I would be centrally located in front of the TV once its in place.

I have considered adding another throw rug and may go that route to see how it helps as Amirm suggested. Not sure how to go about dealing with the nulls in the 65~80hz range without adding a sub to the equation which I would love to do no doubt. A DRC device like DEXQ has been on my mind for some time but I am still fearful that its internal DAC/Pre circutry may not sound as good as my current all AYRE front end does today.

Does anyone know if DRC is able to deal with issues like long decay times in the Midrange or is that type of problem only handled thru room treatments?

Thanks

Amirm, thanks for posting the diagram. It gives a nice idea of how various room objects help to eliminate decay.


Here is a bigger pic of the Full Range test I did with overlay from Right/Left channels.