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Error
Control
No function
PWR LED on?
signal wire no contact or broken
no audio signal from head-unit
amplifier not switched on
No sound
(PWR LED on)
non operational source selected
activated >MUTE< function (User Interface)
adjusted level on optional remote control
unit too low
signal wire no contact or broken
no audio signal from head-unit
balance or fader control of head-unit not
Single channels
in center position
with no function
wrong setup of input and output mode
>GAIN< level too low or >Mute< function
(user interface) active
Impure sound,
incorrect stereo
inverted phase of one or more speakers
reproduction
speaker overload
DSP input override (distortion)
Distorted sound
quality
head-unit output override (distortion)
amplifier override (clipping)
>GAIN< level too high
Increased
noise level
head-unit creates noise
diverse power supplies or ground connection
signal wire no contact or broken
Car specific
head-unit defective
interferences
amplifier defective
audible through
DSP unit or amplifier mounted close to an
the audio system
automotive control unit
analog output of an OEM MOST head-unit
connected
*Note: Use an optional car specific interface to connect the digital MOST audio signal directly to the GZDSP 6-8X
Detecting Possible Errors
Help / Solution
-check the fusing
-check the remote wire
-check the +12 Volt connection and wire
-check the ground connection and wire
-check the contact or replace the wire
-check the audio output signal of head-unit
-check the remote out of DSP
-check the amplifiers power supply
-check the setting
-check the setting
-check the setting
-check the contact or replace the wire
-check the audio output signal of head-unit
-check the setting of the head-unit
-check the setting
-check the setting
-check the polarity of the speaker connection
-check the polarity of the high-level input
-check the >PHASE< setting
-check the >TIME ALIGNMENT< adjustment
-reduce the volume level
-check the highpass filter and slope
-select the correct input mode
-pay attention to the input sensitivity of DSP unit
-reduce the volume level of head-unit
-set the sound controls of head-unit to center position
-deactivate the >Loudness< function of head-unit
-check amplifier input sensitivity
-reduce the level
-reduce the >GAIN< level
-select a superior quality head-unit
-use the optical output (if available)
-let the audio store or manufacturer check the head-unit
-the head-unit, the DSP and each amplifier should be wired up to
a common ground and +12 Volt connection
-check the contact or replace the wire
-let the audio store or manufacturer check the head-unit
-let the audio store or manufacturer check the amplifier
-choose another mounting position
-connect the digital MOST audio signal directly to the DSP unit*
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