A simple but effective way to suppress room reflections while measuring

Good evening

While playing with different crossover filters: :scratch1:

https://www.diyaudio.com/forums/multi-way/340978-vintage-style-sealed-enclosure-3-loudspeaker-dome-tweeters.html

ARTA-OT.jpg
ARTA-burst decay-"naked" loudspeaker

ARTA-MT.jpg
ARTA-carpet

MT.jpg

ARTA-MBT.jpg
ARTA-bathroom carpet

MBT.jpg

ARTA-MCK.jpg
ARTA-couch cushion/pillow

MCK.jpg

And finally:

FR-HI-MCk.png
Holmimpulse-FR using 24db LR-filters

Looks like I now can, before room reflections/modes are kicking in, with this insulation, make reliable measurements down to 70 Hz in my living room.

Best regards and stay healthy