Abbingdon Music Research LS-77 Reference Class - Manual (Page 16)

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Listed below are AMR 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, discern-
ment and hearing as guide. It is right when it sounds right.
To increase the high frequencies level, use a combination marked with a greater dB value; to decrease
the high frequencies level, use a combination marked with a lower dB value. Should you, for any reason
find the existing adjustment range insufficient please contact your AMR dealer 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 (Default)
- 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 (Default)
- 1.5dB 15 R not fitted Placement of speaker 2m or more from rear wall