Abbingdon Music Research Reference Class Proffessional Monitor LS-77 - Manual (Page 26)

26
Below and overleaf are listed our recommendations for different listening distances and placements. However,
there is not per se any specific value that is right or wrong. Please use your own preference, discernment and
hearing as guide. It is right when it sounds right.
To increase the upper midrange and lower treble frequencies compared to whatever you have currently installed
use a combination marked with a greater dB value; to decrease the upper midrange and lower treble frequencies
use a combination marked with a lower dB value. Should you, for any reason find the existing adjustment range
insufficient please contact us for further options.
Listening Distance around 1m (nearfield listening and nearfield monitoring)
HF Level R1 R2 Placement Suggestions
+1.5dB 15 R 10 R Placement of speaker on a bookshelf or very close to walls
0 dB 15 R 22 R Placement within around 1m of rear wall
- 1.5dB 15 R 47 R Placement of speaker 2m or more from rear wall (factory fitted)
- 3 dB 15 R not fitted not recommended
Listening Distance around 3m (normal listening room placement and midfield monitoring)
HF Level R1 R2 Placement Suggestions
+3 dB 15 R 10 R not recommended
+1.5dB 15 R 22 R Placement of speaker on a bookshelf or very close to walls
0 dB 15 R 47 R Placement within around 1m of rear wall (factory fitted)
- 1.5dB 15 R not fitted Placement of speaker 2m or more from rear wall