Blaupunkt GTA 2600 HP - Connection Examples; Subwoofer Connection

GTA 2600 HP
6
Integrate fuse (25 A)
The fuse integrated in the ampli er protects the output stage
and the entire electrical system in case of a malfunction. If a
replacement fuse is used, never bridge fuses or replace them
with a type with higher current.
Connection examples
Connection of the voltage supply ..................................Fig. 2
Audio inputs ...........................................................................Fig. 3
Loudspeaker connections .................................................Fig. 4 - 7
Remote connection of the ampli er with switchable +12 V
voltage source.
This allows the ampli er to be switched on and o using the
on/o -switch of the car sound system.
Loudspeaker connections
(If the ampli er is to be jumpered, continue with the section
"Bridged loudspeaker connections" at this point).
As with every audio component, the correct polarisation of
ampli er and loudspeakers is of essentially importance for a
good bass response. For this reason, ensure that the positive
connection (+) of the ampli er is connected with the posi-
tive connection (+) of the loudspeaker; the same applies to
the negative connections (-). In addition, the left ampli er
channel must be connected with the left loudspeaker and
the right ampli er channel with the right loudspeaker.
Bridged loudspeaker connections
The GTA ampli er can also be bridged for a mono con gura-
tion. This allows the ampli er to be used for one or several
subwoofers or a mid-range driver. In this con guration, the
ampli er combines the right and left channel to a single-
channel output (mono output).
Note:
The ampli er can add the right and left signal information
only if the right as well as the left cinch (RCA) connection
were carried out.
Caution:
In a bridge circuit, the ampli er load must be 4 Ω or
higher. A lower load leads to an overheating or switch-
o of the ampli er and can cause permanent damages.
Subwoofer connection
The GTA 2600 HP features di erent options of connecting
a subwoofer:
–An active subwoofer or an additional ampli er are
connected with a cinch (RCA) cable to the two LINE OUT
sockets (see Fig.7).
–A passive subwoofer is connected to the bridged loud-
speaker output (see the section "Bridged loudspeaker
connections").
Sound settings
The following options are available to optimise the sound
of the connected loudspeakers:
– BASS switch
The BASS switch is used to adjust the bass response of
the ampli er. The following settings are possible: 0 dB /
+6 dB / +12 dB.
– X-OVER switch and LOW PASS control
For the GTA 2600 HP, the type of frequency crossover
("Low-Pass" or "High-Pass") and the desired cut-o fre-
quency can be adjusted for the connected loudspeakers.
Select the cut-o frequency up to which lower frequencies
(high-pass) or higher frequencies (low-pass) should be
blocked. Only frequencies above the cut-o frequency
(high-pass) or below the cut-o frequency (low-pass) are
passed on to the loudspeakers.
The cut-o frequency is dependent upon the frequency
range of the loudspeakers (see recommended frequency
range of the loudspeakers).
"High-Pass" (switch setting: HI PASS)
With a setting of 80 Hz, the ampli er has a frequency range
from 80 Hz to 30,000 Hz.
"Low-Pass" (switch setting: LOW PASS)
This control is active if the switch is in the LOW PASS posi-
tion, and allows for setting the desired entry frequency.
Example:
At a setting of 150 Hz, the ampli er has a frequency range
of 10 Hz to 150 Hz.
"Full Range" (switch setting: FLAT)
In this switch setting, the frequency control is deactivated
and the entire frequency spectrum is being ampli ed.
– LEVEL control
The LEVEL control is used to adjust the input sensitivity
of the power ampli er to the output voltage of your car
sound system preampli er output. The adjustment range
is from 0.2 V to 5 V. If a car sound system of a third party
manufacturer is connected, the input sensitivity must be
adjusted corresponding to the manufacturer data.
A few important explanations in this context:
By turning the LEVEL control clockwise, the input sen-
sitivity of the ampli er and, therefore, also the volume
increases. However, this is not a volume control. In the
end position, it is not possible to achieve a higher ampli-
 er output, even if it sounds like that at  rst. The system
merely increases the volume faster if the volume control
of the car sound system is turned up.
Power-on indicator (POWER / PROTECT)
Green LED:
Output stage on, regular operating status.
Red LED:
Output stage is electronically switched o due to an error.
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