Overview - Sunfire Subrosa SRS-210R User Manual

Overview

Your Sunfire SubRosa subwoofer is
designed to give you the best possible
low-frequency sound quality for your
Home Theater experience. It incorporates
a tremendously powerful amplifier and a
pair of drivers to produce tight, floor-rum-
bling, denture-rattling bass that you can
feel as well as hear.
The subwoofer has an automatic
equalization system that will tailor the
subwoofer output to compensate for any
room effects. It also has a manual equal-
ization mode.
The subwoofer has an adjustable high
cut filter and line-level inputs for easy
incorporation into existing systems, or
as part of a subwoofer/satellite speaker
combination.
Controls for adjusting the volume,
crossover frequency and phase, allow
the subwoofer to be perfectly matched
to any listening environment and audio
components.
The Drivers
To have lots of bass requires moving
lots of air. Your Sunfire subwoofer incor-
porates two drivers that can move back
and forth approximately five times more
than a normal subwoofer. This gives it a
lot of air moving capacity which allows for
majestic bass performance.
The woofers are high-strength designs,
using neodymium magnets.
User's Manual
The Amplifier
The large movement range of the driv-
ers creates greater air pressure inside
the box than a conventional subwoofer.
Therefore, the drive amplifier must be
much more powerful than an ordinary
subwoofer amplifier. In fact, it has to be
so powerful, it is almost hard to believe.
The power amplifier within your Sunfire
subwoofer is capable of delivering over
,700 watts. When the same full output is
applied to the drivers, however, the enor-
mous back-electromotive force generated
as a consequence of its large motion and
giant magnets, causes the current flow to
be much less. It is this singular property
of the drivers that allows the subwoofer
to be approximately ten times more ef-
ficient than a subwoofer this size would
normally be.
A compressor circuit kicks in automati-
cally if the input signal level reaches a
level that would overload the drivers. This
maintains a ceiling on the output without
clipping. If the input signal is driven even
further, a 'soft clipping' circuit is enabled.
This allows the subwoofer to put more
sound into the room to satiate the power
hungry user, but without distortion or
damage to the subwoofer. Thus, for ex-
plosive scenes in movies, this produces
extremely high sound pressure levels
(SPL) in your room without the drivers
banging against the mechanical stops.
For more details of the subwoofer
design, please call us or visit our website:
www.sunfire.com.
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