4.3 LOUDSPEAKER CONNECTIONS
· The lowest terminal resistance in normal mode is 1 ohm
· When two amplifiers are bridged (see Fig. 5), the smallest terminating resistance is 2 ohm.
· Never connect the loudspeakers’ minus terminals to the vehicle chassis.
· Never connect the +12 V supply voltage to a loudspeaker output as this would destroy the amplifier final
stage.
If the amplifier is operated with lower terminal resistances or incorrectly used as described above, both
the amplifier and the loudspeakers may be damaged. The warranty becomes void in such cases.
5. OPERATING ELEMENTS AND IN/OUTPUTS
5.1 SETTING THE INPUT SENSITIVITY
The input sensitivity may be adapted to any car radio or tape deck. Turn the volume control of your radio to its
central position and then adjust the input-level control (9) to produce an average medium volume. This setting
usually provides sufficient power reserves at optimum weighted noise voltage.
ATTENTION: only reproduce loud test noises briefly to prevent damaging the loudspeakers.
5.2 LOW-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY
Set the desired cross-over frequency with the control (7). This makes the filter adaptable to the installed woofer’s
sound requirements. The filter’s high edge steepness is responsible for the precision reduction of medium and
high frequency ranges.
5.3 SUBSONIC FILTER
The subsonic function reduces the lowest bass frequencies. The reduction rate may be infinitely adjusted with
the regulator (8). This allows distortions produced by excessive loudspeaker membrane movements to be
effectively minimized without reducing the utilizable bass levels.
5.4 BASS-BOOST
The bass-boost function (5) is used to increase or equalize the lower bass frequencies.
5.5 VOLUME REMOTE CONTROL
The volume may be adjusted by using the supplied remote control. Please observe during installation that the
remote control line shouldn’t be routed along the same side of the vehicle as the power supply cables. The
remote control unit should be mounted on the dashboard or at any other easily accessible position. Now, the
subwoofer volume may be adjusted independently from the settings at the radio.
5.6 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS / NORMAL MASTER/SLAVE MODE
The master/slave mode permits the use of several Pantera Digital 1000 amplifiers (Slaves) with the same filter
and volume settings as used for a single Pantera Digital 1000 amplifier (master).
In master/slave mode, the "masters" preamp output signal (PREAMP OUTPUT (2)) is added to the slave
amplifiers high-performance amplifier input (AMP INPUT (1)), see also Fig. 4 and 5. To this end, the switch (3)
on the "master" amplifier (A) must be set to "NORMAL", the switch (3) on the "slave" amplifier (B) to "BYPASS".
