6
1 Fuse
The input fuse provides protection against an internal equipment
fault. In addition, the amplifier must be protected by a further line
fuse located in the vicinity of the battery (max. distance from bat-
tery: 30 cm). For this fuse the rating is 2 x 80 amperes.
2 Connecting the remote lead
The remote lead 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.
3 Connecting the battery cable
Connect the +12 V power cable to the positive terminal of the
battery. Recommended cross section: min. 25 mm
2
.
4 Connecting the ground cable
The ground cable should be connected to a central ground refe-
rence 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.
5 Speaker terminals
To connect the speaker cables. See figures on page 6.
Never connect the loudspeaker cables with the car chas-
sis gound. It damages your amplifier.
Ensure that the loudspeaker systems are correctly connected
(phase), i. e. plus to plus and minus to minus. Exchanging plus
and minus causes a total loss of bass reproduction.The plus pole
is indicated on most speakers.
The impedance per channel should not be lower than
1 ohm as overheating could cause a shut down of the amplifier.
6 Speaker connection for Master and Slave Mode
See figures on this page and instructions following No. 16
7 Protect Bridge
To reach maximum power from the Master and Slave Mode during
competition (60 to 80 Hz test tone) for a low-ohmic subwoofer
combination, the protection circuit can be deactivated by bridging
the Protect Bridge contacts.
Don’t bridge contacts when operated with music signals.
8 Signal inputs
The SPXL amplifier has RCA connectors for RCA cables that can
be connected with the pre-amplifier output of the line-outputs of
the headunit or with a pre-amplifier. This connectors are gold-pla-
ted to ensure a better signal transmission.
9 Signal outputs
Full range RCA outputs to connect other amplifiers.
10 Level controls for input sensitivity
These controls can be used to match the input sensitivity of the
individual channels to the output voltage of the connected head
unit. These controls are not volume controls and are solely inten-
ded for the purpose of sensitivity trimming. The control range
extends from 200 mV to 6 V.
11 Bassboost control
To raise the bass signal from 0 to 18 dB at the center frequency
being adjusted by control 12.
12 Control to raise the center frequency
This control adjust the frequency from 40 to 120 Hz, which could
be raised from 0 - 18 dB by control 11.
13 Lowpass control
To adjust the crossover frequency from 35 Hz to 250 Hz.
Signal inputs
Signal outputs
Level controls for input sensitivity
Bass boost control
Control to raise the center frequency
Frequency control for low pass
Phase control 0 - 180°
Bass remote connector
Master and Slave Mode
On LED
Protection LED
8
9
10
11
12
13
14
15
16
17
18
Fuses 80 amperes
Connecting the remote lead
Connecting the battery cable
Connecting the ground cable
Speaker terminal
Speaker connector for Master and Slave Mode
Protect Bridge
1
2
3
4
5
6
7
EQUIPMENT FEATURES AND CONTROL ELEMENTS SPXL 1000
4321 6
5
7
916
12
13
17
15
14
8
10
11 18
