DD AUDIO /
CLASS D MONOBLOCK AMPLIFIER /
14
TROUBLESHOOTING:
NO POWER
• Check GND connection.
• Check voltage at the amplifier’s +12V and REM terminals.
• Check fuses.
NO SOUND
( NO OUTPUT )
• Check all cable routing for shorts or faulty connections,
• Check speakers to verify they are in proper operating condition.
• Check all amplifier controls to ensure they are set properly
(Gain, Crossovers, Master/Slave Switch).
PROTECTION
• Possible causes overheat (thermal), short.
• If the amplifier shuts down due to overheating, it will automatically return to
normal. operation once the amplifier temperature drops below the thermal
shutoff temperature. Make sure there is proper airflow with no obstructions
around the amplifier to avoid further.
• Thermal protection. In some cases an external fan may be required to keep
the amplifier temperature below the thermal protect level.
• The DM Series working voltage is 9V – 16V. When voltage is lower than 8.5V
or higher than 16V the amplifiers will not operate correctly.
DISTORTION
• Check speaker cables for reverse polarity of one channel.
POOR BASS RESPONSE
• Check speaker cables for reverse polarity of one channel.
BUZZING SOUND
• Check the amplifier and headunit ground connections.
• Check RCA cable connections and possibly replace RCA cables with better
noise shielded cable or reroute RCA cables away from power cables.
WHINING NOISE
• Engine noise can be caused by poor grounding of amplifiers, head units,
signal processors, battery or alternator. If you can remove the signal cables
from the amplifier and the noise goes away the sound is not being generated
by your amplifier, but by an external grounding issue.
If you have any questions regarding setup, installation or warranty please contact
the DD Audio technical support team by email at
or by
phone at
(405) 239-2800
.
