Troubleshooting; Specifications - Monacor NANO-404 Montageanleitung

8 Trouble Shooting
If there is no sound after switching on the car
HiFi system, locate the fault more precisely by
means of the LED (7).
The LED does not light up
1) Check the fuse (8) of the car HiFi amplifier
(30 A) and the additional fuse at the car bat-
tery. Replace defective fuses. Only use fuses
with the indicated values. Do not insert a
higher value in any case. The power amplifier
may be damaged and the guarantee expires.
2) Check the 12 V power supply cable and the
ground cable for correct connection and for
interruption.
3) Check at the terminal REM (10) of the power
amplifier if +12 V is present. If not, remove the
cable at the terminal REM and temporarily
short-circuit the terminals REM and BATT (9).
If the power amplifier switches on now, the
fault is due to the missing control voltage.
Check the 12 V control output of the car radio
and the corresponding connection cable to
the power amplifier.
The LED shows green
1) Check the audio cables from the signal
source to the car HiFi power amplifier. Are the
plugs correctly connected? Are the cables
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.
4) Check the connected speakers.
The LED shows red
The power amplifier is protected with a protec-
tive circuit against overheating and against short
circuit at the speaker outputs. The protective cir-
cuit also responds when a DC voltage arrives at
the speaker outputs in case of a defect of the
power amplifier and shortly for muting when
switching-on. If the protective circuit is activated,
the LED (7) shows red and the speaker outputs
are switched off.
If the LED does not change from red to
green after switching on the power amplifier or if
it changes to red during operation, switch off the
car HiFi system and eliminate the error. After
eliminating the error or after cooling-down, the
power amplifier switches on again automatically.
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9 Specifications

Output power
Max. power: . . . . . . . . . 300 W
RMS power at 2 Ω: . . . . 4 × 60 W
RMS power at 4 Ω: . . . . 4 × 40 W
RMS power in case of
bridge operation at 4 Ω: 2 × 120 W
Frequency range: . . . . . . 20 – 30 000 Hz
Min. speaker impedance
4-channel operation: . . 2 Ω
Bridge operation: . . . . . 4 Ω
Input sensitivity
Line (RCA jacks): . . . . . 0.15 – 5 V
High Input: . . . . . . . . . . 2.5 – 7 V
Filters (limit frequencies)
Low passes: . . . . . . . . . 50 – 500 Hz,
High passes: . . . . . . . . 50 – 500 Hz,
Channel separation: . . . . 55 dB
S / N ratio: . . . . . . . . . . . . . 96 dB (A weighted)
THD: . . . . . . . . . . . . . . . . < 0.07 %
Power supply: . . . . . . . . . 11 – 16 V /30 A
Ambient temperature: . . . 0 – 40 °C
Dimensions: . . . . . . . . . . . 158 × 44 × 182 mm
Weight: . . . . . . . . . . . . . . 1.5 kg
Subject to technical modification.
® INTERNATIONAL GmbH & Co. KG. No part of this instruction
12 dB / octave
12 dB / octave
GB
9