Revel Gem 2 - Manual (Page 14)

Ultima Gem2
Owner’s Manual
14
ACOUSTIC TREATMENT MATERIALS
As previously mentioned, the Gem2 Loudspeakers utilize
high-order networks which optimize both the on-axis and
off
- axis response. Their optimized response minimizes sonic
degradation that can occur in overly “live” rooms. Placing
minimal acoustic treatment materials at primary reflection
points will reduce these distortions even further. Ideally, acoustic
absorbers should be placed at the first reflection points on the
front and side walls and either acoustic absorbers or diffusers
should be placed at the first reflection point on the rear wall.
Because the listener’s eyes and ears are on the same plane, the
“mirror method” is an accurate determinant of critical reflection
points. This method can be used to determine reflection points
for side walls, rear walls, front walls, and even the ceiling.
Applying acoustic treatment materials to the side walls is most
important, followed by the front wall, rear wall, and ceiling.
To determine reflection points using the mirror method:
1. Once the Loudspeakers have been placed, sit in the primary
listening position and ask another person to slide a mirror
along the listening room walls.
2. Note the locations at which the person sitting in the primary
listening position can see either the left, center or right front
loudspeakers. Be sure to look for all of the speakers in the
reflection on each room boundaries, including the front and
rear walls. These are reflection points that require acoustic
treatment materials.
If acoustic treatment materials are not available, hanging a rug
over the reflection points will help reduce degradation in overly
“live” rooms. Carpeting the floor between the loudspeakers and
the primary listening position and placing irregular surfaces
such as bookcases at first reflection points will also help
minimize strong reflections. Avoid placing large reflective
surfaces such as coffee tables between the loudspeakers and the
listeners for critical listening.