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DDA – Digital Directional AntennaComponent system
2-way system, in which the chassis (tweeter,
woofer, possibly subwoofer) can be installed se-
parately to optimize the sound/installation situa-
tion.
Corridor function
Thanks to the latest chip technology, the naviga-
tion system stores all relevant data along the spe-
cifi ed driving route (corridor). Listen music from
CD or MP3/WMA and navigate throughout Euro-
pe fully dynamically (traffi c jam avoidance) at the
same time, without changing CDs, as long as you
do not leave the corridor.
Crossover
High-pass, low-pass
DAB – Digital Audio Broadcasting
Digital radio
DAB antennas
In contrast to the familiar analog radio (AM/FM
0.145 – 108 MHz), digital radio is broadcast with
its 2 bands (Band III 174 – 240 MHz, L-Band 1452 –
1492 MHz) in a higher frequency range. That is
why it is necessary to add an antenna or replace
the existing AM/FM antenna before it is possible
to enjoy uninterrupted digital radio listening pleas-
ure and the reception of extensive data services
(news, traffi c messages, traffi c congestion maps,
car park information, stock-market reports, display
of artist and song title, etc.). In this department,
Blaupunkt offers 5 different antennas to cover
the digital radio frequency range. These include
single antennas to simply add to your existing
system or combination antennas to replace the
old antenna. Depending on the model, the com-
bination antennas also offer AM/FM and/or GSM
in addition to DAB.
In principle, the DDA process mimics the reac-
tions of an extremely quick, automatic directional
antenna – similar to TV “rabbit ears” that deliver
just “snow” or perfect reception depending on
just a small adjustment. When used in car radios,
the DDA process works with two independent
antennas and receivers, whose signals are digi-
tized using intermediate frequency analog-digital
converters. The digitized data is then fed to an
adaptive algorithm with extremely low response
times. Thus, the two intermediate frequency sig-
nals are combined so that the antenna can gain
up to 3 dB of antenna power even for weak re-
ception fi eld strength levels. In areas with strong
reception, the second regular receiver, the so-
called RDS background receiver, is then freely
available. Switching between DDA operation and
RDS background reception is quick and inaudible,
controlled by a logic that evaluates the current
reception conditions. This guarantees the radio
listeners the best possible reception and rapid
frequency switching at all times, without annoy-
ing station searches.
DEQmax/DEQmaxEX/DSAmax
Digital Sound Adjustment
Equalizers that do the thinking for you! The intelli-
gent Blaupunkt equalizers are equipped with a self-
adjusting function to automatically optimize sound
reproduction. The DSAmax equalizer is a com-
pletely integrated high-performance 24-bit DSP
Angle
Depending on where the car radio is installed, the
reading angle of the display can be adjusted to
best suit the driver.
Audio output
The audio output power of a car radio or an exter-
nal output stage measured according to different
measurement standards.
RMS power:
Continuous power with a sine wave, measured at
10 % THD (DIN 45.324) for car radios or at 1 % THD
(DIN 45.500) for amplifi ers or another THD as in-
dicated.
Music power:
Continuous power with a complex signal (music
signal), measured at 10 % THD (DIN 45.324) for car
radios or at 1 % THD (DIN 45.500) for amplifi ers
or another THD as indicated.
Max. power:
Maximum short-term output power possible, im-
portant for extreme level peaks.
Audio streaming
Allows the wireless transmission of music data
via Bluetooth, e.g. from a cell phone to the USB
Bluetooth interface.
AutomaticSound
AutomaticSound, also known as GALA, controls
the volume in relation to the driving speed. Im-
portant: the speed signal must be connected to
the car radio.
Aux input
Stereo preamp input to which external audio
sources can be connected – e.g. a CD changer,
MP3 player or the iPod via the iPod interface.
As an alternative to the Aux input connection on
the rear side of the system, the Front Aux input
is a 3.5 mm stereo jack located conveniently on
the front panel.
Aux naming
External sources, e.g., portable music players, can
be assigned an arbitrary name (max. 16 charac-
ters), which then appears on the car radio display
when this source is selected.
Bass Boost
The Bass Boost control can be used to adjust the
bass reproduction of the amplifi er. The adjustment
range normally extends from 0 dB to + 12 dB and
ensures increased deep bass. Bass Boost permits
rich, powerful base sound from relatively small
subwoofer enclosure volumes.
Bluetooth (integrated)
Allows the wireless connection of a cell phone to
the car radio to provide hands-free operation and
call answer/termination via the radio. The cell
phone must be equipped with a corresponding
Bluetooth interface that meets the Bluetooth 1.2
standard and supports the so-called “hands-free
profi le” (HFP 1.5).
Brightness
A menu is used to adjust the brightness of the dis-
play and night design to the cockpit illumination.
Separate settings can be selected for “headlights
on” and “headlights off”.
Calibration microphone
Special microphone required for automatic cali-
bration of the equalizer (DSAmax, DEQmaxEX).
This microphone is already included with the
Bremen MP76; it is available as an accessory for
other devices.
CD-Text
Many CDs now already include additional infor-
mation on the artist, the name of the album and
the names of the individual tracks. The CD-Text
function can be used to show this information on
the car radio display.
Center-Out
Center channel generated from the two front
channels. It requires an additional external am-
plifi er and a speaker in the center of the dash-
board.
Clock
Time display. The exact time is synchronized via
the RDS-CT signal.
Coaxial speaker
2-way speaker in which the tweeter is positioned
in the centre of the woofer on one axis.
Combination antenna
Combination of different types of antennas in one
enclosure/rod. There are duplex (e.g. AM/FM radio/
GSM) and triplex antennas (e.g. AM/FM radio/
GSM/GPS). This means that only one antenna is
required on your car to ensure optimal reception
for different applications.
system. The computer has enough power to handle
the 4-channel self-adjustment of 27 graphic equa-
lizer bands (= 108 bands in total). This creates a
sound quality that remains unparalleled to date
and can also be adjusted to your personal taste.
Signal time alignment for the audio signal guaran-
tees a true-to-life, concert-like panorama. Dyna-
mic Noise Covering (DNC) automatically adjusts
the volume, the equalizer and music dynamics to
the current noise background in the vehicle. And
this feature not only regulates the level, it also
adjusts the sound to the frequency spectrum of
the driving noise.
A spectrum analyzer, fascinating effect sound op-
tions for Club, Stadium, Cathedral, Theater and
Concert as well as sound presets round out the
virtually unlimited opportunities to individualize
your sound!
Parametric Bands in DEQmax/DEQmaxEX:
For especially easy operation and outstanding
adaptation to the complicated acoustic condi-
tions in modern vehicles, the DEQmaxEX equalizer
uses six fully parametric bands (adjustable mid
frequency, quality and level) with automatic cali-
bration function (in systems with DEQmax, the
parametric equalizer must be adjusted manually).
In addition, you can also choose individually from
fi ve pre-defi ned sound curves for different music
styles.
Automatic equalizer adjustment with the
DSAmax and DEQmaxEX:
To keep things simple and ensure that the best pos-
sible sound is what you get in the end, Blaupunkt
has developed an automatic self-adjusting func-
tion that measures the problematic frequency re-
sponse individually in every vehicle. All you have to
do is to connect the calibration microphone (comes
included with the Bremen MP76) with the ISO
connection box and press the AUTO key in the
equalizer menu. After just a few seconds, the
sound will be noticeably more harmonious, richer
in detail with greater differentiation, as the annoy-
ing frequency peaks are reliably balanced out. To
satisfy personal tastes, all the settings can also
be adjusted manually afterwards. Alternatively,
the sound-related or voice-optimized sound preset
curves can also be selected.
DigiCeiver
Technology, whereby the car radio is based on
signal/computer processors. The signal is digital-
ly processed from the front-end receiver to the
preamp output. This affords considerable advan-
tages in terms of reception properties and sound
adaptation.
SHARX®
A
D
Vehicle-specific frequency response without DSAmax correction
Amplitude
in dB
20
10
0
–10
–20
–30
10
2
10
3
10
4
Frequency
in Hz
Annoying frequency
response peaks
Lack of
deep bass sound
Lack of
brilliant trebles
125
350
1400
Correction using DSAmax
20
10
0
–10
–20
–30
10
2
10
3
10
4
Frequency
in Hz
Filter 1 Filter 2 Filter 3 Filter 4 Filter 5
Vehicle-specific frequency response with DSAmax correction
Amplitude
in dB
20
10
0
–10
–20
–30
10
2
10
3
10
4
Frequency
in Hz
C
Changed route
Normal route
Dynamic corridor
Destination
Start
Wanted
signal
Reflected
signal with
interference
Crac
kling
Usual situation when reception
is poor
Transmitting antenna
High-end reception concept with TwinCeiver and DDA
High-end reception concept with
TwinCeiver and DDA
Interference signal is elimi-
nated electronically by the
DDA directional antenna
Wanted
signal
Transmitting antenna
Reception with DDA
Reception range of the automatic DDA directional
antenna: the wanted transmitter signal is received,
the reflected interference signal is faded out.
Direct
signal
Reflection
Comparatively circular reception range of a normal car
antenna: both the transmitter signal and the reflected
signal are received.
Conventional reception
Direct
signal
Reflection
B
Technology
70|71
Amplitude
in dB