Im double checking all my response graphs and yes there all somewhat similar with no tmuch deviation, I do have a dip right under 40hz which can be cut off or rolled off. The 60hz is persistent with the two added subwoofers but my prior measurements dont have it in any case your correct EQ can solve that. But I have a SBIR issue between 120 and 140 and around 170 on the right side that is in all measurements in some form. Yes, from a frequency response standpont it isn't bad, as I don't know what constitutes as good I always think its bad but I get your point. But from a decay perspective the waterfall graph does show some long decay times across the board. Must be the 4m front to back room. I aslo have a massive 120 litre cabinet for my front left rights so it can't get any closer to the front wall. Lol.
Yes, it is Welti's approach that why I added Abdo's "mentioned" technique but you were able to explain it in a way that was understandable. So when you say uniform response the technique doesn't attenuate room modes such as the dips or peaks and only provides uniform repsonse...? I thought it should.
I will do another test and can manually EQ with Equalizer APO some dips are still showing after Audiolense DSP. But what about the dip around 120hz can I deal with that with EQ as well?
I guess your right, I mean how much can I reduce decay even with targeted bass trapping probably not much attenuation.
I am adding 2D Binary template(RPG bad panels) to the front of a few bass traps, about 2 metres from listening spot should be okay. If you got any opinions on this it would be appreciated but I am already getting them cut out and unfortunately I only found a nice looking MDF laminate in 16mm hopefully that is not a problem, I know they are in 9mm or 12mm.
I am analysing the measurements and I can't tell if there has been any attenuation from adding a panel to the back of the speaker. The left measurement looks worse but the right looks somwhat attenuated after adding the panel.
I also probably have to double and triple check the issue is front wall SBIR and that I placed the panel in the right spot and retake measurements with and without panel and get back to you. But below I have added what I got.
No, I did not simulate the absorber. I only added another approx .5 to 1m2 to the front wall which already had about 2m2 but if you include the corner panels then there is about 4m2 plus the added panel making it about 5m2.
Basically if you let me know what kind of attenuation I am supposed to get, I will redo measurement taking that in mind and ensure a accurate measurement. I am not saying what I got is not accurate but there is always anomalies and once you spot them you kind of know where your going wrong.
First two is left side im looking at the 120hz before in green and after in the red.
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These two are right side I am looking at around 170hz purple is before and green is after.
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