Positioning - PMC twotwo.5 User Manual

Positioning

With their unique cabinet design, wide dispersion, ultra-low distortion, and smooth bass
TM
Advanced Transmission Line
roll-off, PMC loudspeakers are more forgiving of difficult room conditions and placement
constraints than conventional designs – you will be able to achieve a superb sound throughout
the room with little effort. However, we encourage you to spend some time experimenting in
your own room to achieve the very best results, remembering that small changes in location can
often influence system performance significantly. The following guidelines are suggestions for a
starting point to locate your new loudspeakers. Fine-tuning of their positioning can start
from there.
Dispersion and Toeing-in
Most loudspeakers have a relatively narrow dispersion and are designed to be aimed directly
at the listening position, as shown in the left-hand image below. However, the excellent stereo
imaging which PMC monitors are known for is due, in part, to their wide dispersion characteristic,
as shown on the right-hand image. To optimise the stereo imaging, PMC monitors should be
angled so that their axes cross about 0.5 metres (2ft) behind the listening position (as illustrated
below). Varying the 'toe-in' angle to adjust the actual point at which the speaker axes crossover
will subtly affect the vividness of the audio soundstage.
Conventional monitors PMC Monitors have wide
have narrow dispersion dispersion to provide accurate
which restricts the width of sound across the widest
the accurate listening area possible listening area