Abbingdon Music Research LS-77 owner manual Loudspeaker Toe-in, Room and furniture influence

Toe-in of the speakers often i m p r o v e s imaging!

Furniture and general room design strongly influence the sonic result!

4.6 Loudspeaker Toe-in

Depending on your personal listening environment and room dimensions, the LS-77 Reference Class Professional Monitors may be angled in towards the listening area to help focus the sound radiation. This positioning will typically improve imaging, and is recommended by AMR. The ultimate positioning, however, is also a matter of personal taste and room acoustics.

4.7 Room and furniture influence

The furniture, wall materials and other objects found in the listening room may influence the sound quality of any loudspeaker. Therefore it may be necessary to adjust both the high frequency and low frequency balance of the speakers (see Appendix A - Adjustment of tonal balance) to suit your listening environment.

For example, a large room without much furniture that has many clean, hard wall surfaces may yield a bright and diffuse sound with diverse reverberating frequencies. In such a case, due to the "Controlled Dispersion" design of the LS-77, a placement with as much toe-in as is practical can reduce the reverb significantly. By adjusting the high frequency tonal balance to produce less high frequency output the bright tonal balance may be ameliorated. Nevertheless, it may also be desirable to fit some acoustic treatment or at least some carpets and maybe some heavy wall-hanging rugs or whatever means are suitable to domestic harmony.

A room with thick carpet, curtains and many soft furniture surfaces might yield a slightly warmer, darker and less lively sound. In such a case using very little toe-in and adjusting the high frequency tonal balance to produce more high frequency output can produce a more lively and open sound.

Please consult your authorised AMR retailer for recommendations and help. In order to maximise the sonic quality of the reproduction from your LS-77 speakers you may also wish to employ the Abbingdon Acoustic Setup Regime (AASR) described in the Appendix B.

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