3
8 622 402 834
GB
Introduction
Congratulations on your pur
amplifier
which deliver
upgrading an existing system or using the GT
a new system, you are certain to notice immediate performance
benefits!
Recommendation:
A pow
installation will maximise the overall performance of your audio system.
W
y
these instructions carefully
Finally
music in your car that sustained sound levels above 100 dB can dam-
age your hearing and may even result in total hearing loss. Modern
high-performance systems and high-quality loudspeaker configurations
are quite capable of generating noise levels above 130 dB
Safety precautions
Instructions for installation and connection
Fit a fuse in the amplifier power line no more than 30 cm from the vehi-
cle battery
between it and the po
the amplifier itself, bDisconnect the negative
terminal of the battery before carrying out installation and connec-
tion work.
Observe the vehicle man
bags, alarm systems, trip computers, vehicle immobilisers).
The final stage must be installed prof
The mounting surface must be suitable for the screws provided, and
must provide firm support.
When drilling holes, take care to avoid damage to vehicle components
(battery
Fit the amplifier in a suitable location, e.g. beneath the seats or in the
trunk (Fig.
ficient ventilation f
passing cables through holes with sharp edges. Use loudspeakers with
an impedance of 2 to 4 Ω (see table or installation drawing). Observe
the max. power handling specifications (music output). Do not connect
the loudspeakers to g
section of the positive and negative cable must be at least 6 mm
2
.
GT
The amplifier is suitable for connection to car radios with Cinch connec-
torUse the Blaupunkt ISO Cinc
to car radios with ISO connector
Applications and loudspeaker connection:
Positive/negative connection
We recommend a cab
2
.
standard commercial positive cable to the battery and connect to the
fuse holder
with sharp edges. Bolt a standard commercial negative cable to a ground
point free of induced noise (car body bolt, body panel) - not to the neg-
ative battery pole. Clean the contact surface of the ground point down
to bare metal and coat with antiseize graphite petroleum.
Integral fuses
The integral fuses within the amplifier protect the final stage and the
entire electrical system in the event of a fault. Never bridge fuses or
replace fuses with a higher current rating.
Example connections
Power supply connection ............................................................ Fig. 2
Loudspeaker connections ........................................................ Fig. 3-5
Connect remote amplifier connection to switchable
+12 V power source.
This enab
Off s
Gain control
The gain control enables the input sensitivity of the final stage to be
matched to the output voltage of your car radio preamp output.
The range of adjustment e
Adjust the input sensitivity in accordance with the manuf
ifications when connecting the amplifier to other radios.
Important: T
sitivity of the amplifier
however not a volume control; an increase in volume is not achieved in
the maximum position, even if this subjectively appears to be the case.
The system merely increases the volume more quickly when the vol-
ume is turned up on the radio.
T
GT
This facility enables the amplifier to be used simultaneously with stereo
satellite speakers (mid-r
The connections are somewhat more complicated in this case, as they
require the use of passive crossover networks (not supplied with the
amplifier) which divide the frequency ranges between the various loud-
speakers
below
If you do not wish to purchase and connect the components separ
a number of ready-assembled tri-mode crossover networks are availa-
ble
CAUTION: In tri-mode (combined mono/stereo mode) the amplifier must
be presented with a load of at least 2 Ohms (stereo satellite speakers)
or 4 Ohms (mono subwoofers). Lower loads cause overheating of the
amplifier and ma
Loudspeaker connections
(If the amplifier is to be connected in a bridged mode, proceed with the
section “Bridged loudspeaker connections”.)
As with any audio component, connection of the amplifier and speakers
with the correct polarity is essential for good bass reproduction. Ensure
therefore when connecting that the positive (+) amplifier terminal is con-
nected to the positive (+) loudspeak
negative (-) terminals.
nected to the left-hand loudspeaker and the right-hand amplifier chan-
nel to the right-hand loudspeaker
Bridged loudspeaker connections
The GT
to use the amplifier for one or more subwoofer(s) or a mid-range speak-
er
channels, delivering a single channel (mono) output.
Note:The amplifier can sum the right- and left-hand signal inf
only if both the right- and left-hand RCA connections have been made.
CAUTION: The amplifier must be presented with a load of 4 Ohms
or higher in bridged mode. A lo
overheat or switch off. This can lead to permanent damage of the
unit.
Note: If the amplifier is to be used in the tri-mode configuration, the
crossover frequency selector switch must be set to „Flat“ in order to
make the full frequency range available.
Adjustment of the type and range of the cross-over frequencies.
GT
The GT
be selected between 40Hz and 160 Hz.
by turning the selector switch to the “Flat” position.
This information is subject to change without notice!
+12V
Stereo mode
Max power 2 x 100 Ω Fig.3 / 3a
Mono mode
Max power 1 x 400 Ω Fig.4
Stereo mode
RMS P 2 x 50 Ω Fig.3 / 3a
Mono mode
RMS P 1 x 160 Ω Fig.4
T Fig.5
F 10 Hz - 55.000 Hz
Signal-to-noise ratio > 80 dB
Stabilility 2Ω
Input 0,1 - 8
sensitivity
Low-pass filter 40 - 160 Hz
High-pass filter 100 Hz
Bass-Boost 0 / 9 / 18 dB
Preamp - In / -Out gold-plated
Dimensions
D x 218 x 57 x 250
GT
