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DD-8 Power Ampliers
Operation Manual 13
trouBleShootInG anD maIntenance
Troubleshooting
The amplier does not power on.
1. Attempt to power on the amplier 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 amplier 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 amplier 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 dier 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 amplier
and speaker.