Protection Circuit; Operating Elements - Hifonics TR200A Bedienungsanleitung

HI LEVEL INPUT
The HI LEVEL INPUT (Fig. 1, 8) is suitable to connect the device input with speaker wires, if your
headunit is not equipped with pre-amplifier RCA outputs. Extend therefor every regarding speaker cable
from your headunit with appropriate speaker cables from your car audio retailer to the mounting location
of the amplifier. Then connect the each matching loudspeaker cable with the cables of the included
HI LEVEL INPUT jack like described below. Please ensure that a ground cable (black cable, GND)
must be connected, which you can branch from the ground terminal of the amplifier (GND).
NOTE: Never use the High Level Input and the RCA inputs at the same time. This may damage the
device seriously. The loudspeaker cables of the HI LEVEL INPUT must have no contact to the ground
(GND) by any means.
AUTO TURN ON
The amplifier detects a voltage rise (6 Volts) with a so called "DC Offset" over the connected input
signal on the HI LEVEL INPUT (Fig. 1, 8) when the headunit will be switched on. Hence, the amplifier
will also be turned on. As soon as the headunit will be turned off, the amplifier turns also automatically
off. In this case the turn-on connection (REM, Fig. 1, 12) is not needed.
Note: The Auto Turn On function usually works with 90% of all headunits, because they are equipped
with "High Power"-outputs. Only with a few older and still existing headunits the Auto Turn On function
is not working.

PROTECTION CIRCUIT

If the POWER LED (Fig. 1, 5) lits up blue, the device is in normal operation. If the PROTECT LED (Fig.
1,5) lits up red, the device is overheated. If this events, the internal built-in protection circuit shuts down
the device automatically. The device should work again properly after cooling down.

OPERATING ELEMENTS

INPUT SENSITIVITY
The input sensitivity can be adjusted to any headunit. Turn the volume control of your headunit to the
center medium position and then adjust the input level controls (Fig. 1,3) until you have an average
medium level. This setting usually provides sufficient power reserves at optimum weighted noise voltage.
VARIABLE LOWPASS FILTER
Set the desired crossover frequency of the low pass filter by using the controller (Fig. 1, 2). Thus to
that only the frequencies below the chosen crossover frequency will be amplified and the subwoofer
plays more precised and efficient.
PHASE SWITCH
The PHASE-switch (Fig. 1, 7) allows to set the phase between 0° or 180° to match the run time of the
output signal with the vehicle's interior acoustic.
VARIABLE BASS BOOST
By using the boost controller (Fig.1, 9) you are able to increase the bass boost level from 0 dB to 12 dB.
Caution: Please use the bass boost with care.
ENG
+
grey = speaker - right - positive
-
brown = speaker - right - negative
black = ground connection (GND)
-
white = speaker - left - negative
+
green = speaker - left - positive
10