Bose Acoustimass 15 User Manual Page 3

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order to maintain the proper balance of deep bass at low volume levels. It lets you enjoy the full
impact of rich, deep bass at any listening level while ensuring that speech still sounds natural.
“Discovery” questions to ask your customers:
_ Do you live in an apartment or condominium with neighbors close by?
_ Do you watch movies or listen to music at lower volumes during the day, late at night or
when your children are asleep?
Multi-channel bass extraction and summation:
1. General description:
Bose proprietary multi-channel bass extraction and summation is one of the key system
electronic features that allow us to provide Virtually Invisible
®
speaker solutions. It takes bass
from all the non-LFE channels at speaker level, pads them down to line (pre-amp) level and
combines this with the LFE/subwoofer information (post-LFE control knob adjustment) such
that the appropriate bass from ALL channels is reproduced. Then, active equalization is
applied and the signal is re-amplified with adjustments from the Bass/Room Compensation
control and passed to the speakers in the module. The ultimate benefit is a single bass-
reproducing element which removes the need for multiple bass sources and the likelihood of
positions in the room where there is too much and too little bass when multiple bass sources
are used.
2. Correcting bass phase cancellation:
Multi-channel bass extraction and summation eliminates loss of bass output due to phase
cancellation in the bass module. Bass phase cancellation may occur with simple summation
of bass signals in a single bass-reproducing element when the soundtrack is recorded with
the bass in different channels out of phase (i.e. rear channel information placed out of phase
with the front, etc.).
Active equalization
This Bose proprietary technology is always “on”. Active equalization can provide a consistent and
finer-tuned result than the passive equalization used in a non-powered bass module. Bose active
equalization ensures that each Acoustimass module delivers its best possible response.
NEXT GENERATION CUBE SPEAKERS
Direct/Reflecting
®
speaker technology (Acoustimass 15 & 10 speaker systems only)
The cube speaker arrays can be pivoted to re-create a more natural balance of reflected and
direct sound energy similar to what you’d experience at a concert or cinema. The result is more
open, spacious stereo and surround sound throughout the listening area.
Matched and magnetically shielded cube speakers
The cube speakers are acoustically matched to provide seamless surround sound for more
realism and consistency of sound from speaker to speaker. And they are magnetically shielded to
avoid video interference when placed near television.
Use and placement of cube speaker arrays
The cube speaker arrays are adaptable and easy to fit within the listening area. Each array may
be positioned in order to optimize its sound within the individual room. Their position within the
listening environment may also be optimized using genuine Bose speaker mounts.
“Discovery” questions to ask your customers:
_ Is it important for your music to sound more open and spacious? – (In reference to cube
speaker array products).
_ Will you be placing the speakers (i.e., center, left or right channel) near video equipment?
_ Are “seamless” special effects important to you? When a jet flies across your screen, for
instance, do you want it to sound realistic with a consistent sound quality from one side to
the other (as opposed to audible “jumps” as it moves across the room resulting from
acoustically unmatched speakers)?
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