Eclipse - Fujitsu Ten AV8533 - Manual (Page 25)

The new CD Receiver line delivers outstanding audio performance
across the board for each model.
Audio
Focus
Generates virtual speakers that create a front-firing,
higher-positioned soundfield.
TruBass
Generates a virtual subwoofer
for satisfying low frequency
reinforcement.
Circle Surround
Multichannel surround
sound is generated
from any audio
source.
Circle Surround II
This technology enhances in-car listening
enjoyment with a powerful combination of
three functions. Circle Surround generates
surround sound from any audio source such
as CDs, MP3s, WMA files and radio broadcasts
with just four speakers. Focus raises the stereo
soundfield, making the sound appear to be
coming from directly in front at ear level.
Its use complements surround sound to create
a rich, enveloping soundfield. TruBass is
technology based on psychoacoustics and
scientific knowledge of the human hearing
system to generate bass sounds extending
lower than a small speaker’s response so that a
subwoofer is not required.
CD8455 (Pro off), CD8445 (Adv. on)
High voltage and low impedance output
High-end audio products usually are engineered
to have preamp outputs that have high voltages
along with low impedances. These
characteristics are desirable from an audio
electronics point of view as they enable driving
downstream amplifiers optimally to reap other
benefits such as a higher signal-to-noise ratio
and increased dynamics. Each CD receiver
ensures any connected external amplifier will
deliver optimal performance.
CD8455/8445: 8V at 55 Ω
CD5435/5425/5415/5405: 5V at 55 Ω
Parametric EQ
This sophisticated equalization method is the
best for achieving a smooth, well-balanced in-
car system frequency response that
overcomes the frequency peaks and dips often
encountered in automobile environments due
to the combination of hard, reflective surfaces
and soft, absorbing surfaces. Parametric EQ
allows selecting a frequency band as well as
bandwidth for an even system response.
3-band Graphic EQ
An additional EQ method to
adjust the tonal characteristics
of program material to suit
user preferences.
CD5435/5425/5415/5405
MOSFET 50W
×
4
power amplification
MOSFET devices are used for power
amplification due to their desirable
characteristics — drawing less current and
requiring less power — as well as providing a
more natural sound.
Multi-Harmonizer
Digital music files in formats such as MP3,
WMA and ATRAC3 lose harmonic data during
encoding because compression is applied.
Multi-Harmonizer restores the lost harmonic
data, allowing files to sound much better.
Time Alignment
Electronic delay lines make sure the sounds
from all the speaker units arrive at the listener’s
ears simultaneously for a much more natural
sound with improved imaging.
CD8455, CD8445 (Adv. on)
Crossover
To create a smoother system response in a multi
speaker system, the frequency point and slope
can be tweaked for each speaker.
CD8455/8445/5435/5425
Digital circuits benefit from signals staying in
the digital domain as long as possible, helping
to minimize distortion and noise. All signal
processing in the CD Receivers remains
entirely in the digital domain until the last stage
prior to power amplification. The final level of
audio performance also relies on high-
performance digital to analog conversion. As
this process greatly influences final sound
quality, a proprietary DAC is utilized so
distortion is minimized and S/N ratio stays
high.
High-performance DSP
Analog AM/FM signal is sent to a A/D converter before entering the DSP.
CD
CD-R/RW
MP3 WMA
ATRAC3
DSP AMP
SP
D/A
converter
Digital Digital Analog Analog
Conversion
Featured in the CD8455 and CD8445, this single
sophisticated chip contains the Parametric EQ,
Multi-Harmonizer, Time Alignment and
Crossover functions as well as level.
CD8455/8445
Advanced 24-bit
∆∑
D/A converter
AUX Input
When connecting external sources, the
AUX input has adjustable sensitivity for
perfect matching to cut extraneous noise
and improve S/N ratios.
CD8455/8445/5435,CD5425 (optional)
All Units
Original music file
MP3 file
Lost harmonic data
Restored harmonic data
CD8455/8445
CD8455, CD8445 (Adv. on)
25