Place speakers and set up the room

Establish a repeatable starting geometry

For two-channel monitoring, equal left and right distances with an included listening angle of about 60 degrees are a useful starting geometry. Aim each monitor toward the seat and align its acoustic axis with seated ear height. Locate that axis in the manufacturer documentation rather than assuming it is always the tweeter's centre.

Keep the two speakers as similar as practical in their distances to nearby boundaries. Symmetry means the acoustic surroundings as well as matching stand positions. A side wall beside one speaker and an open passage beside the other are different conditions. Identify that constraint before trying to correct it with channel volume controls.

• Record the seat position, speaker spacing, wall distances, height, orientation, and existing room-control settings.
• Use the manufacturer's placement guidance when it differs from a general starting layout. Keep the direct path free of obstacles.

Separate geometry from room problems

Hard surfaces reflect sound, while room modes can create position-dependent low-frequency peaks and dips. Moving speakers or the seat changes how those modes are excited or sampled. It does not remove the room's underlying modes. A room-centre seat, a large desk, and unequal side boundaries deserve separate investigation.

Avoid a universal wall-clearance rule. A manufacturer may recommend near-wall placement and boundary compensation for one model, while another setup needs a different approach. EBU reference-room guidance describes controlled assessment conditions, not a guarantee that every small room can meet those dimensions. Follow required ventilation and support clearances regardless of the acoustic experiment.

• Check desk reflections and whether a screen or furniture blocks either speaker.
• Compare feasible speaker and seat positions before buying treatment. Use room measurements when a position-dependent problem is unclear.
• Change one variable at a time, with both channels kept comparable. Save the original layout so you can restore it.

Integrate a subwoofer as a separate task

Treat subwoofer location, crossover, and phase as system-specific adjustments rather than fixed settings. A wall or corner can increase output, but maximum output and the flattest response are not the same objective. Establish a usable main-speaker layout first, then follow the subwoofer and system manuals for routing and bass management.

Compare the main speakers, the subwoofer, and their combined response where the system allows separate measurements. Document crossover and phase settings beside each comparison. Do not copy a manufacturer's default crossover from a different product into your system without checking compatibility. If the result changes substantially across seats, include those seats in the evaluation instead of optimizing only one point.

• Confirm whether the main speakers are actually high-pass filtered or still receive the full-range signal.
• Recheck the combined system after a speaker, seat, subwoofer, or crossover change.

Hypothetical example: a desk in an uneven nook

Suppose the left speaker sits beside a wall while the right faces an open doorway. First document the existing arrangement. Then try a feasible desk location that gives both speakers more similar surroundings. Set the seat on the pair's centre line and restore equal speaker-to-seat distances. Do not predict the outcome from the floor plan alone.

Compare this layout with the original using the same system settings and documented measurement positions. If moving the desk is impossible, record that limitation and investigate smaller placement changes. A workable, repeatable arrangement is more useful than an ideal diagram that blocks access or leaves a speaker insecure. This is a planning example, not a listening test or an asserted improvement.