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Harman REVEL CONCERTA B10 User Manual

Harman REVEL CONCERTA B10
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SUB B10 Service Manual
6 OF 32
SUBWOOFER PLACEMENT
Below 300Hz, loudspeaker and listener locations have
a profound impact on the way sound is reproduced.
All rooms have “standing waves,” by which certain
frequencies are emphasized or diminished. Their
complex patterns can combine to introduce
tremendous sound coloration at low frequencies.
The Concerta2 B10's Equalization controls can help
to compensate for these effects, but no electronic
system alone can fully compensate for the dramatic
effects of room acoustics. Every room has locations
where “nulls” at specific frequencies occur. These
cancellations of the sound are like “black holes,”
which no amount of equalization can fill. The best
results are always achieved through careful
placement of both the loudspeakers and the listening
position. Preferable placement can be determined
through the use of computer modeling programs, or
by trial-and-error measurements. For optimal results,
find the best loudspeaker and listener locations first,
then use the B10 Equalization controls for fine-tune
adjustments.
To help determine good locations for the subwoofer(s)
and the listener(s), it is recommended that you make
high-resolution in-room response measurements.
Your authorized Revel dealer can make the
appropriate measurements, using suitable equipment
to ensure optimal results.
Note: Many sound-measurement devices are not
accurate enough to properly measure low-frequency
performance in a listening room, since room
boundaries can often cause modes (standing waves)
with very narrow-band peaks and dips. Check with
your authorized Revel dealer to confirm that your
measurement equipment is suitable for accurate,
high-resolution measurements.
SUBWOOFER PLACEMENT CONSIDERATIONS
When using subwoofers within the limited confines of a
typical home theater room, the reflections, standing
waves and absorptions generated within the room will
create peaks and dips in the bass response that can vary
greatly depending on where the listeners are located in
the room a listener seated in one location may hear an
overabundance of bass created by a response peak at
that location, while another listener only a few feet away
may hear a considerable lack of bass created by a
response dip at that location.
The subwoofers' locations within the room (along with the
room's dimensions) also have a profound effect on the
creation of these bass response peaks and dips. Careful
subwoofer placement alone cannot compensate for all
bass response peaks and dips throughout a room, but
careful subwoofer placement can eliminate or
significantly reduce the largest response dips.
It is important to reduce response dips throughout the
room as much as possible via proper subwoofer
placement because equalization cannot be used to
compensate for large response dips. For example, using
equalization in an attempt to restore a 13dB response dip
requires that the subwoofer amplifier delivers twenty
times the power at that frequency. This can quickly
overdrive the subwoofer amplifier into clipping, which will
significantly degrade audio quality.
In almost any room, placing the subwoofers in corners
will produce the fewest large bass response dips and will
also produce the most large bass response peaks.
We strongly recommend that you install multiple
subwoofers regardless of the room's size. Installing a
single subwoofer will result in the least consistent bass
performance throughout the room. Using multiple
subwoofers can cancel some room modes at the various
listening locations, resulting in much more consistent low
frequency sound quality throughout the listening area.
Additionally, it is often impossible to locate a single
subwoofer such that large response dips, which cannot
usually be corrected via equalization, are not present.
The use of two or more properly placed subwoofers can
almost always eliminate such dips in response.

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Harman REVEL CONCERTA B10 Specifications

General IconGeneral
BrandHarman
ModelREVEL CONCERTA B10
CategorySubwoofer
LanguageEnglish

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