B
A
11
10
12
B
A
13
Schalter 11 auf Position 15kHz - 1kHz
Schalter 10 auf Lowpass
Tiefpass: 15kHz - 1kHz
Switch 11 at Position 15kHz - 1kHz
Switch 10 at Lowpass
Lowpass: 15kHz - 1kHz
Hochpass/Tiefpass
90Hz
Highpass/Lowpass
90Hz
Schalter 11 auf Position 1kHz - 5kHz
Schalter 10 auf Lowpass
Tiefpass: 1kHz - 5kHz
Switch 11 at Position 1kHz - 5kHz
Switch 10 at Lowpass
Lowpass: 1kHz - 5kHz
Schalter 11 auf Position 15kHz - 1kHz
Schalter 10 auf Highpass
Hochpass: 15kHz - 1kHz
Switch 11 at Position 15kHz - 1kHz
Switch 10 at Highpass
Highpass: 15kHz - 1kHz
Schalter 11 auf Position 1kHz - 5kHz
Schalter 10 auf Highpass
Hochpass: 1kHz - 5kHz
Switch 11 at Position 1kHz - 5kHz
Switch 10 at Highpass
Highpass: 1kHz - 5kHz
H
HX
XA
A 2
20
0
No. 13
No. 13
No. 13
No. 13
0
-5
-10
-15
dB
20
100
50
200
10
1K
15
Hz
500
variabel
0
-5
-10
-15
dB
20
100
50
200
500
10
1K
15
Hz
Hz
15
32
55
80
110
160
250
450
1K
dB
100
1K
200
500
5K
10K
2K
Hz
0
-5
-10
-15
variabel
dB
100
1K
200
500
5K
10K
2K
Hz
0
-5
-10
-15
variabel
dB
20
100
50
200
500
10
1K
15
Hz
0
-5
-10
-15
variabel
H
HX
XA
A 2
20
0X
X
1,3
1,5
Hz
1K
1,8
2,2
2,7
3,3
4K
5K
Hz
15
32
55
80
110
160
250
450
1K
1,3
1,5
Hz
1K
1,8
2,2
2,7
3,3
4K
5K
1 Connecting the remote wire
The remote wire is connected to the automatic antenna (aerial positive) output of
the head unit (radio). This is only activated if the head unit is switched ON. Thus the
amplifier is switched on and off with the head unit. The amplifier
only turns on
when
the battery- and ground cables are connected first.
2 Connecting the battery cable
Connect the +12 V cable to the positive terminal of the battery. Recommended cross
section: 10 mm
2
.
3 Connecting the ground cable
The ground cable should be connected to a central ground reference point (this is
located where the negative terminal of the battery is grounded at the metal body
of the vehicle), or to a bright bare-metal location on the vehicle chassis, i.e. an area
which has been cleaned of all paint residues.
4 Fuse
The input fuse provides protection against internal equipment fault, i.e. the system
must be additionally protected by a further line fuse located near the battery
(max. distance from the battery: 30 cm/ 12 inch). The fuse value of the amplifier
is 15 Ampere.
5 - 6 Signal inputs
The HXA 20/ HXA 20X have RCA connectors for cinch cables leading from the pre-
amplifier outputs, the line outputs of the head units or the outputs of a pre-ampli-
fier/ equalizer, e.g. HXE 100. These connectors are gold-plated in order to ensure
better signal transmission.
7 Green LED
When the green LED is on the amplifier is in operation.
8 Yellow LED
If the yellow LED is on there is a malfunction in the
amplifier or a impedance less than 2 Ohms at the loudspeakers output.
9 Red LED
The red LED turns on when the amplifier is overheated.
10 Selector switch for channels A and B
For switching the frequency crossover to highpass, lowpass or full range.
12 Switch for mono/ bridged and stereo
With this switch the channels A and B (16) can be bridged to mono. In this case the
total impedance
of the connected speakers
must be 4 ohm or higher.
In stereo
mode the connected total impedance per channel can be
2 ohm
or higher.
In mono
mode the total input signal of both channels cannot be higher than 8.5 V !
14 - 15 Level adjustment for input sensitivity
These controls can be used to match the input sensitivity of the individual chann-
nels A to B to the output voltage of the connected head unit. These controls are
not volume controls and are solely intended for the purpose of sensitivity trimm-
ming. The adjustment range extends from 800 mV to 8.5 V.
16 Speaker connection terminal for channels A and B
ENGLISH
HXA 20
HXA 20 X
4
1
6
5
3
2
9 8 7
B
A
11
10
12
B
A
18
16
17
14
13
15
