Revel M12 Manuel d'utilisateur télécharger pdf (Page 11)

11

REVEL Concerta M12

Owner’s Manual

Loudspeaker Placement

(continued)

• Move the M12s farther from the front

and side listening room walls to

improve stereo imaging and the sense

of spaciousness in the listening space.

• Move the M12s closer to the corners or

walls of the listening room to increase

bass response.

• The M12s can also be flush mounted in

a bookcase or shelf as shown in Figure

8 (below).

CAUTION

Loudspeakers such as the M12, when

placed on pedestal stands, have a high

center of gravity, which may cause

them to fall if tipped or improperly

positioned.To avoid this, anchor the

loudspeaker to the floor and/or wall

using the same procedures and hard-

ware used to anchor bookcases, wall

units, and other furniture. Harman

Specialty Group assumes no responsibility

for improper selection and installation

of hardware or for any personal injuries

or product damages resulting from

improper installation or a fallen loud-

speaker.

LISTENING ROOM ACOUSTICS

Listening rooms have a profound impact

on sound, particularly at lower frequencies.

In fact, listening rooms can dominate

sounds below about 400Hz. Ideally, listening

rooms would include optimized dimensional

ratios to minimize the effects of room

resonances. But in reality, most listening

rooms are not designed to enhance

loudspeaker performance.

The interaction between loudspeakers and

listening rooms is complex, depending on

two important determinants that affect the

loudspeaker and the listener.

1. Surfaces and other boundaries often

cause large peaks and dips in low-

frequency response. These peaks and

dips often range 12dB or more.

2. Standing waves (also known as room

modes or resonances) interact with

both the loudspeaker and the listener,

resulting in large frequency response

errors.

Unfortunately, there is no simple solution

that considers both factors. Even computer

software programs that examine one or

both factors may not calculate proper

primary listening position or loudspeaker

placement values.

M12

M12

Front Left

Front Right

Center

Figure 8: Flush Mounted

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