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5.0 SERVICE AND PREVENTIVE MAINTENANCE
The BassBase 600 will not require service of any type for many years. Tube fatigue is normal after several
thousand operating hours and becomes apparent through treble loss or increased microphonics (audible as a
ringing noise reproduced by the tweeter).
Use a soft, slightly damp cloth to clean all metal parts. Avoid exposure to mechanical shocks, extreme heat,
dust and moisture.
6.0 TROUBLESHOOTING
E1)
The BassBase is not getting any power:
- Check the mains cable to see if it is connected properly.
- The mains fuse is defective. Replace the fuse with another identical fuse. If this fuse also blows, consult
your Hughes & Kettner dealer.
E2)
The BassBase is connected properly, but no sound is audible.
- The MUTE function is activated. Press the MUTE button!
- One or several GAIN and MASTER controls are turned all the way down. Dial in a higher setting.
- The FX-MIX control is turned all the way to WET but you have not connected a processor to the FX loop.
Turn the FX-MIX knob to DRY.
- One of the circuit breakers has tripped. Locate and eliminate the defect (e.g. inadequate ventilation,
defective speaker cable).
- One of the internal fuses is blown (e.g. caused by a permanent short in the speaker output jack). Locate
and eliminate the defect and change the fuse (make certain the replacement fuse bears the proper rating).
E3)
Hi-range/midrange response is poor even though you have verified your EQ settings.
