Lexicon DD-8 Car Amplifier User Manual


 
DD-8 Power Ampliers
Operation Manual 13
trouBleShootInG anD maIntenance
Troubleshooting
The amplier does not power on.
1. Attempt to power on the amplier with the front panel Standby/On button.
2. Examine the power cord to ensure a good connection between the rear panel AC input
connector and the wall outlet.
3. Check the wall outlet.
The Trigger Input is connected to an external device, but the amplier does not power on and
o with the external device.
1. Verify the trigger cable is connected at both ends and verify that the trigger cable is
connected to the right device. Also re-verify the trigger installation instructions as
instructed in the Basic Operation section of this user guide.
2. Verify the trigger level of the output source device. The DD-8 accepts a range of
5-15VDC.
Source signals are present and the system is at a suitable volume level but one or more
channels are not passing audio.
1. Reduce system volume level.
2. Power the DD-8 into standby mode.
3. Check input connections.
4. Check speaker connections.
5. Allow the amplier to cool before powering it on again.
Audio sounds “thin” and is lacking proper bass response.
Check to ensure proper polarity of the speaker cables and connections.
Audio Levels dier between channels.
1. Check the level settings of the DD-8 Output Level Controls.
2. Check the settings on your preamp, processor or controller.
Audio plays and then cuts o.
Check input and speaker connections for short circuits or loose connections at the amplier
and speaker.