Specifications

Circle Surround II
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
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.
High voltage and low impedance output
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.
Analog AM/FM signal is sent to a A/D converter before entering the DSP.
CD
CD-R/RW
MP3
DSP
AMP
SP
D/A
converter
DigitalDigital AnalogAnalog
Conversion
CD Receiver
Amp
Speaker
Normal Voltage
Because the amplitude ratio is high,
the amplitude of the noise carried in the signal
is also high.
VoltageVoltage
Signal Noise
+
Noise
+
Noise
Signal Noise
Amplitude
ratio
XL
High Voltage
Because the amplitude ratio is low,
the amplitude of the noise carried in the signal
is also low.
Amplitude
ratio
S
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, MP3 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.
The new CD Receiver line delivers outstanding audio performance across the board for each model. By adhering
to ECLIPSE’s time-proven audio philosophy and incorporating advancements where possible by combining the
best of digital and analog, the new CD Receivers provide significantly better audio quality that greatly enhances
the enjoyment of music.
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.
Audio
Highend 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 55Ω
CD5435/5425/5415/5405: 5V at 55Ω
2
CD8455 (Pro off), CD8445 (Adv. on)
CD8455/8445
CD8455/8445
CD8455/8445 (Adv. on)
CD5435/5425/5415/5405
High-performance 24-bit ∆∑
D/A converter