Edition Blue™ 15/30/60 DFX
Before you switch on the audio playback device, turn the Master control all the way down. Then turn up the Master control a little and dial in the desired balance levels. Once you‘re satisfied with these levels, gradually turn up the control to the desired overall level.
4 Standard Setup and Cable Connections
5 Service and Maintenance
The Edition Blue™ DFX amps do not require maintenance of any type. However, there are a few precautions to observe to significantly lengthen the life of your amp:
•Always ensure that all peripheral devices, cords and cables are in
a state of good repair! Defective speaker cables (short circuits, loose connections) are the most common cause of failure.
•Make sure that your amp‘s ventilation ducts are not blocked or covered.
•Avoid mechanical shocks and exposure to extreme heat, dust and especially moisture.
•Pay close attention to the specifications of peripheral devices.
•Never connect devices with high Output signal levels (e.g. power amps) to your amp‘s Input.
•Check for the correct voltage before you plug in the amp. If in doubt, check with the venue‘s sound technician or the caretaker of the building.
•Do not carry out “do it yourself” repairs. Get a qualified service technician to replace internal fuses.
•Use a soft, damp cloth to clean the exterior surface of the Edition Blue™ DFX.
6Troubleshooting
The Edition Blue™ DFX will not switch on:
•The amp is not receiving any Mains voltage. Check the Mains cable to see if it is properly connected.
•The Mains fuse is defective. Replace the fuse with another suitable fuse. If this fuse is also defective, consult your Hughes & Kettner® dealer.
The Edition Blue™ DFX is correctly connected but the sound is inaudible:
•One or more of the Gain and Master controls may be turned down.
•One of the internal fuses is defective. Get a qualified service technician to replace the fuse (taking care that the values are the same)
The Clean channel cannot be activated through an external Footswitch:
•The Channel Select switch on the front panel may not be in the „off“ position. Switch the Clean channel on.
When using the Line In / Line Out jacks, there is a humming noise:
•An electrical or magnetic field is causing interference. Here, it is recommended to use a DI box, e.g. Hughes & Kettner® Red Box®.
You have connected an FX processor to the Line Out jack but the signal is totally distorted even when using Clean sounds.
•The Input of the FX processor is overloaded. Reduce the processor‘s Input sensitivity (“Input” or “Gain”).
You have connected an FX processor to the Line Out but the Output signal is too quiet:
•The FX processor‘s Output Level is set incorrectly. Turn the Output Level of the processor up high.
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