Duotone™ Head
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Troubleshooting
The Duotone™ won't Power up when you switch it on:
•
It's not getting AC Power. Check the mains cable to see if it is
connected properly!
•
The mains fuse is defective. Replace the fuse with another fuse of the
same type. If this fuse also blows, be sure to talk to your local Hughes
& Kettner® dealer.
The Duotone™ is connected properly, but no sound is
audible.
•
One or several Gain or Master controls are turned all the way down.
Dial in higher settings.
•
A shorted external speaker cable caused one of the internal fuses
to blow. Have a qualified technician change the fuse (ensure the
replacement fuse bears the proper rating).
The sound is washed out and muddy when you activate
a connected effects device.
•
The signal processor is shifting the phase of the signal that is being
blended with the original signal in the parallel effects loop. Turn the
FX LEVEL knob clockwise to the far right to avoid this type of phase
cancellation.
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Technical Specifications
Preamp Section:
Input
-10 dBV / 1 M Ohm
FX RETURN
0 dBV / 1 M Ohm
FX SEND
-10 dBV (+6 dBV)/8 K Ohm (15 K Ohm)
Power Amp Section
Output Power
100 watts into 4/8/16 Ohms
Frequency response
20 Hz - 50 KHz
General data
Input Power
230 volts AC (European version)
117 volts AC (North American version)
100 volts AC (Japanese version)
Max. Power consumption
470 VA
Power supply fuse
T 2,5 A (230-volt version)
T 4 A (117-volt version)
T 4 A (100-volt version)
Anode Fuse
1 x T 1 A
Internal fuses
2 x T 250 mA
Operational temperature
range
-10°C - +35°C
Dimensions (W X H x D)
29.5" x 12.6" x 9.9" (750 x 320 x 250 mm)
Weight
52,5 lbs(24 kg)
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