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Rosen A9 Owner’s Manual
Background noise floor
Dynamic limit of headphones and most car audio systems
DVD movie
sound levels
without RES
DVD movie sound
levels with RES
Soundtrack dialogue
Sound-effects
dynamic peaks
ROSEN ENTERTAINMENT SOUND
What makes the Rosen A9 DVD sound better than any other “in-car
entertainment” system? A collection of unique audio features that we
call Rosen Entertainment Sound. Rosen engineers know that true
entertainment isn’t just visual – you’ve got to have great sound! You
won’t find this collection of sonic improvements anywhere but Rosen.
RES Surround-sound. (DVD audio only).While many of us have
home theatre systems with center-channel speakers and subwoofers,
Rosen knows that most of us don’t have that luxury in our vehicles. So
Rosen’s surround-sound circuitry re-creates surround effects when
watching movies – even when using headphones!
RES Sound Processing. (DVD audio only). Movie soundtracks were
meant to be heard in a quiet theatre using a powerful, multi-channel
sound system – not in a moving car with a four-speaker stereo! The
dialogue can be difficult to hear over road noise, and the most dynamic
portions of the soundtrack often overpower the car’s sound system.
With RES Sound Processing turned on, dialogue is automatically louder
and easier to hear, while loud passages, such as special effects, are
automatically lowered slightly. Try RES whether you are listening through
the car speakers or wearing headphones, and use it whenever you
find it improves the sound. RES Sound Processing retains the original
fidelity of the soundtrack, acoustically compensated for your vehicle. It
also makes headphone listening even more enjoyable and comfortable.
RES True Two-Channel Stereo. RES uses stereo audio all the way
through the signal chain – even in the FM modulator, a place where
many manufacturers save money and use only mono components.
Rosen believes that in the age of digital multi-channel cinema sound,
two-channel stereo is the minimum acceptable audio solution for DVD
enjoyment.
RES Audio Overdrive. Most “automotive” DVD players operate on 12
volts, and that’s about all that makes them “automotive”. Their DVD chips
put out very low audio output voltages – maybe enough in a home
system, but not enough for use in the challenging electrical environment
of the automobile. RES A9 systems have what we call Audio Overdrive
– we almost double the audio voltage level from the DVD drive on the
way to the rest of the system. Not only is sound quality improved, but
the chances of picking up electrical noise are greatly reduced.