Troubleshooting; Specifications - Monacor CARPOWER HPB-350 Mounting Instructions

8 Trouble Shooting
If there is no sound after switching on the car HiFi sys-
tem, locate the fault more precisely by means of the
red LED POWER (3) for operating indication.
8.1 LED does not light up
1) Check the fuse (11) on the car HiFi booster (30 A)
and the additional fuse on the car battery (40 A).
Replace defective fuses. Only use fuses with the
values as indicated. Do not insert fuses with a
higher value under any circumstances. The booster
can be damaged, and the guarantee will be can-
celled.
2) Check the 12 V power supply cable as well as the
ground cable for correct connection and interrup-
tion.
3) Check if +12 V is present at the terminal RMT (9) of
the car HiFi booster. If not, remove the cable at the
terminal RMT and bridge the terminals RMT (9) and
+12 V (10) for a short time. If the car HiFi booster
switches on now, the error is due to the missing
control voltage. Check the 12 V output of the car
radio (or the separate switch or the ignition lock)
and the corresponding cable to the car HiFi booster.
4) The booster is protected at the speaker outputs with
a protection circuit against overload and short cir-
cuit as well as against overheating (85 °C). If the
protection circuit responds, the LED POWER extin-
guishes. After the error has been eliminated or after
cooling-down, the booster automatically switches
on again.
In case of repeated switching on and off, check
the speaker cables for short circuit and the imped-
ance of the speakers (min. 2 Ω per channel). This
may also due to the fact that the heat dissipation is
not sufficient enough (ventilation).
8.2 LED lights up
1) Check the connection cable from the signal source
to the car HiFi booster. Are the plugs correctly
connected? Is the cable interrupted?
2) Check the signal source. Is the signal source
switched on? Have the correct outputs been used?
Is the signal source defective?
3) Check the speaker cables for interruption.

9 Specifications

Max. output power
channels 1 and 2: . . . . . 2 x 75 W at 4 Ω
bass channel: . . . . . . . . 1 x 150 W at 4 Ω
Output power rms
(Channels 1 and 2 / bass channel)
at 2 Ω speaker: . . . . . . . 2 x 60 W/1 x 130 W
at 4 Ω speaker: . . . . . . . 2 x 35 W/1 x 70 W
at 8 Ω speaker: . . . . . . . 2 x 20 W/1 x 50 W
Frequency range: . . . . . . . 20 – 20 000 Hz
Inputs, 2 x line: . . . . . . . . . adjustable from
Crossover frequency
Low pass: . . . . . . . . . . . 30 – 350 Hz; 12 dB/oct.
High pass: . . . . . . . . . . . 30 – 350 Hz; 12 dB/oct.
Channel separation: . . . . . > 60 dB
S/N ratio: . . . . . . . . . . . . . > 90 dB
THD: . . . . . . . . . . . . . . . . . < 0.1 %
Input impedance: . . . . . . . 10 kΩ
Output impedance: . . . . . . all channels 2 Ω
Power supply
(chassis minus): . . . . . . . . 11 – 16 V , max. 40 A
Ambient temperature: . . . . 0 – 40 °C
Dimensions: . . . . . . . . . . . 320 x 183 x 53 mm
Weight: . . . . . . . . . . . . . . . 2.8 kg
According to the manufacturer.
Subject to change.
0.3 up to 5 V
GB
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