I have been building my first home theater. It is a 5.1.4 system (Q Acoustics 3000i series) with Denon X3600H as the AVR. I also did some REW measurements with the following results (please, see the attached images). The measurements have been done with Denon room correction (Audussey XT32) enabled.
About the room and some general facts:
- Concrete all around (floor, 3 walls and the ceiling).
- Left side is open to the dining room and to other parts of the apartment.
- Right side is almost fully covered with windows.
- Room measurements: please see the attached picture. The height of the room is about 8.3ft / 2.5m.
- No room treatment done yet. However, I have considered getting some attenuation material/panels to the back wall.
- MLP is about 2.25ft / 0.7m from the back wall.
- Crossover frequency is 80hz, all speakers but subwoofer set to small.
- There is a very noticeable echo if one, for example, claps his hands.
- The background noice level is very high as I live in the city centre. Almost 60dB.
- I am quite novice in audio but have noticed that the audio quality is nowhere near the quality that was in a local speakers store that I visited recently.
- I am mainly using the system for movies and TV series. Quite seldom I use it for music.
About the REW measurements:
- Please, see the attached pictures.
- No smoothing applied to the pictures.
- The REW measurements data can be found from: https://drive.google.com/file/d/1WSf...ew?usp=sharing
Some questions regarding the measurements:
- In general, how does the SPL and Waterfall measurements look like?
- There is quite a large dip around the crossover frequency of 80hz. Are there some general ways to iprove these?
- In your opinion, would attenuation panels on the back wall help producing considerably better audio response?
- Any general comments or suggestions?
Any help and comments are very much appreciated, thank you!