Abbingdon Music Research LS-77 owner manual HF Level R1, Placement, +1.5dB, 15 R, 47 R

Listening Distance around 5m (farfield listening or monitoring)

HF Level R1 R2 Placement

+3 dB	15 R	22 R
+1.5dB	15 R	47 R
0 dB	15 R	not fitted
- 1.5dB	not Fitted	22 R

not recommended

Placement of speaker on a bookshelf or very close to walls (factory fit.)

Placement within around 1m of rear wall

Placement of speaker 2m or more from rear wall

If you feel that the tonal balance in the low frequencies of the LS-77 is not correct for you or your room, you may need to change the positioning of the LS-77. Some of the required adjustment may be due to the differences in placement or the room’s low frequency behaviour, while others may be a result of differences in taste and furnishings.

If the low frequencies are percieved as too prominent you may wish to fit the large cell foam inserts to either reduce the output of the port or you can completely seal the port using the insert made from dense foam. Typically, the closer you place your speaker to the wall, the more the port output needs to be attenuated.

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