What happened to my room acoustics
I measured the spectrogram for my room at my MLP, and the FFT results are as follows:
- There is a roll-off before 20kHz.
- A dip is present around 12kHz.
- There is a noticeable boost between 50Hz and 1.5kHz.
- The bass rolls off around 33Hz at -3dB, consistent with the factory rating.
Comparing these measurements to the Burchardt measurements, there are some differences:
- It doesn’t exhibit a roll-off before 20kHz.
- The dip is around 15kHz.
- The boost between 50Hz and 1.5kHz is not as pronounced as in my room.
I’m curious about what might be happening with my room acoustics. If a fix is possible, what would it entail?
Spectrogram from my zoom
My room / speakers setup
Measurements from Burchardt
@lanx0003 No worries, those are suggestions. They have worked well on my 4 prior rooms and speaker setups. The most challenging were the Aerial 8b with the side firing woofers and the Betas since you have further flexibility but I had already placed a huge projection screen which can't be blocked. BTW, like the Poang but its a bit too upright for my back. |
@ervikingo The almost full-range Aerial 8 is reviewed favorably with impressive specs. It could be an endgame choice. Good luck with them. The Poang chair is a bit too upright for my liking as well. But if I sit further tilted back (on other chairs), I found that the sound perception changes drastically. I am getting used to it now. |
@erik_squires @newbee @mijostyn @rhljazz @hilde45 @audiokinesis @ervikingo @jamesw767 @aewarren @ronboco Again, thank you all for the insights and great suggestions. I think I may have found a potential solution for issues I am having. The Anthem Room Correction (ARC) system seems promising. A gentleman had the same 12kHz dip issue in his Buchardt S400 II speakers (so I guess it's inherent to the speakers) and he was able to correct it with the ARC built into his Anthem STR preamp (>$3k). I don't plan to purchase that expensive preamp, but MartinLogan has a Unison preamp ($199) with ARC built in. I hope it will do the same trick to address my issues. Fingers crossed for it.
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Thanks, but that isn't the cause of the issue. As I explained, the treble dip at 12kHz is most likely inherent to the speakers, while the boosted midrange and mid-bass are likely due to reflections. I do not use spikes under stands or speakers. Spikes are not ideal decouplers. Instead, I use Moon gels, which are drum dampers, under the speakers. In my opinion, they are far more effective decouplers than spikes, and they also help keep stand-mount or bookshelf speakers level and stabilized on the stands. Based on my A/B listening tests, the bass performance is as good as the SVS SoundPath Isolator, which costs $99 for a pair of speakers. |
