28
ENGLISH
TROUBLE SHOOTING
THE POWER LED IS ON, BUT NO SOUND COMES FROM THE SPEAKERS
Check the following steps:
Low level mode: Are the RCA cables on the head unit and on the device correctly connected?
• The RCA cables are correctly connected.
Then an RCA cables could be defective. Check the function of the RCA cables on another audio
device. If necessary, replace the defective RCA cables.
High level mode: Are the loudspeaker cables on the head unit and the high level inputs of the de-
vice or on the high level cable plug correctly connected?
• The speaker cables are connected correctly.
A speaker cable could be defective. If necessary, replace the speaker cable or insulate the damaged
area.
Are the speaker cables correctly connected between the speakers or the subwoofer at the speaker
outputs of the device?
• The speaker cables are connected correctly.
A speaker cable could be defective. If necessary, replace the speaker cable or insulate the damaged
area.
Is the high pass filter or subsonic filter set higher than the low pass filter on the device?
Then slowly turn down the controller for the high pass filter or subsonic filter until the sound can be
heard.
Is the input mode switch on the device set correctly?
Check the setting and change the switch position if necessary.
Are the crossover switches on the device set correctly?
Check the settings and change the respective switch position if necessary.
Are the speakers or the subwoofer working?
Hold a standard 9 volt block battery to the terminals of each loudspeaker or the subwoofer.
• A faint cracking sound can be heard.
The speaker or subwoofer is fine.
• There is nothing to be heard.
The loudspeaker or subwoofer could be defective. If necessary, replace the defective speaker or
subwoofer.
Are the settings on the head unit set correctly?
• Check the fader and balance settings
• Check whether the mute function is activated
• Check whether a high pass or low pass filter is activated
• Check whether playback has been paused
• Check the source settings
• Check whether any existing subwoofer output is activated
Summary of Contents for ESX Quantum QL812SP
Page 30: ...30 NOTES...
Page 31: ...31 NOTES...
