DB Research DB Drive WDX Mini 4000.1 Podręcznik użytkownika - Strona 11

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4. TROUBLE SHOOTING

NO SOUND ( NO OUTPUT )

1) Check all connections, cables' routing, short and voltage at WDX amplifiers

and headunit.

2) Check external fuses. If any are blown, replace with new one.

3) Check whether speakers work well. You can test speakers by connecting to another amplifier.

PROTECTION

1) Please check overload, overheat ( thermal ), short, voltage and DC offset.

2) Minimum working impedance for 4 channel amplifiers is 2 ohm stereo or 4 ohm mono

Minimum working impedance for all Class D mono amplifiers is

1 ohm for single unit and 2 ohm for linked operation.

3) If WDX amplifier shuts down due to overheat, reset by turning off the remote input and

alowing time to cool down.

Please make sure there are no airflow obstructions around WDX amplifiers to prevent

thermal protection.

4) WDX 100.4, WDX 200.4, WDX 300.4, WDX 5500.5, WDX 1000.1, WDX 1500.1, WDX 2000.1,

WDX 3000.1, and WDX 4000.1 have voltage operation of 12V~15V.

WDX amplifiers will protect if voltage is out of range.

POOR BASS RESPONSE

1) Please check speaker polarities .

WHINING NOISE

1) Engine noise is caused by poor grounding of WDX amplifiers, headunit,

battery, alternator, or other components. Please check all grounding connections.