Sony SA-VA15 - Manual (Page 5)

Overview
Built-in center speakers let you enjoy Dolby
Pro Logic Surround sound
The use of a center speaker is a key factor in obtaining
a full surround effect when playing sources encoded
with the Dolby Pro Logic Surround sound system.
Center speakers in a movie theater make central
sounds, such as dialogue, clearer and create a unified
sound image.
Normally, you have to install a center speaker
separately, but this speaker system makes it easy to set
up a high-performance home theater system by
incorporating a high-quality center speaker system into
the front speakers.
In addition, rear speakers are also provided with this
system to create a complete home-theater that lets you
enjoy the maximum surround effect.
Top view
Dynamic Bass Roar (DBR) super woofer
system provides theater-like bass sound
To provide a theater-like experience complete with
dynamic bass sounds, this speaker system incorporates
the Super Acoustically-loaded Woofer (SAW) design
(see below) in the left and right front speakers to form
a DBR super woofer system.
tweeters
What is the SAW design?
The SAW design features a centrally-positioned woofer drive
uiut, two chamber construction, and a long main duct.
Through precision control of the acoustics of the two chambers,
the unit can reproduce powerful ultra low frequencies without
muddiness.
Front view
Center channel
In addition, we also included two super woofer modes
designed to bring the dynamic bass sounds found in
movie theaters (mode 1) and concert halls (mode 2) to
your living room.
Power turns on and off automatically
The speakers turn on automatically when a sound
signal is input and turn off when you've finished
watching a program and the sound signal goes out. So
you don't have to bother using the power switch every
time you use the system.
How the center speaker works
The front left and right speakers are equipped with center
channel tweeters (see above) angled inwards at 30“ to
reproduce high-frequency center channel sounds. Low-
frequency center channel sounds are mixed with the front
chaimel signals and reproduced through the front left and right
full range units. This design produces a high-quality
centralized sound image for the center channel which exactly
matches the quality of the front channel sound to provide
superior sound quality and a unified sound image without a
cumbersome external center speaker.