Service And Preventive Maintenance - Hughes & Kettner Edition Blue 60-R Series Service Documents

EDITION BLUE 60-R-MANUAL
4.0 OPERATING THE EDITION BLUE 60-R
4.1 SELECTING CHANNELS
Use the CHANNEL SELECT switch or an external foot-
switch to change channels.
NOTE: Before using a footswitch, set the CHANNEL SELECT
switch on front panel of the amp itself to the CLEAN
position.
4.2 THE EDITION BLUE 60-R AND CD PLAYERS
The EDITION BLUE 60-R is equipped with a CD INPUT
located on the rear panel for the connection of a CD
player or another audio source (tape deck, DAT recor-
ders). The circuit is controlled directly by the MASTER
circuit of the EDITION BLUE 60-R, which means that you
can use the MASTER knob to adjust the input signal's
volume. To dial in the desired balance of levels for the
playback and guitar signals, the connected playback
device has to be equipped with some type of variable
output control.
Tip: Most audio playback devices feature a variable
headphones out. Using a corresponding adapter,
you can connect it to the CD INPUT.
Note: Before you switch on the audio playback device,
turn the MASTER knob all the way down. Then turn up the
MASTER knob a tad and dial in the desired balance
levels. Once you're satisfied with these levels, gradually
turn up the knob to the the desired overall level.
4.3 THE EDITION BLUE 60-R AND SIGNAL
PROCESSORS
The effects loop on the EDITION BLUE 60-R is a serial
effects loop, meaning that the entire preamp signal is
routed to the FX device and processed there.
To connect a signal processor:
• Connect the processor's INPUT to the EDITION BLUE 60-
R LINE OUT jack and the processor's OUTPUT to the
EDITION BLUE 60-R LINE IN jack.
• To avoid noise, signal degradation, and interrupted
signals, only use high-quality patch cables.
• Make sure the processor is not distorting the signal.
Check the processor's gain LEDs (if it is equipped with
this type of display) and use the input and output
controls to dial in a suitable level.
• Distortion devices are not designed for use in an FX
loop. As a rule of thumb, any kind of device that
compresses the signal should be connected first in the
signal chain. Depending on the type of effect you
want to achieve, you may want to connect your
compressor directly between the instrument and the
amp's input.
• If you are using several processors or stomp boxes,
ensure you connect them in the proper order.
4.4 THE EDITION BLUE 60-R AND MIXING
CONSOLES
If you want to feed the EDITION BLUE 60-R's signal to a
mixing console, we recommend you route it through a
Hughes & Kettner RED BOXTM. Patch the signal from the
LINE OUT jack, as this signal path's level is not influenced
by the MASTER setting. The RED BOXTM balances the
signal and simulates a speaker cabinet.
5.0 SERVICE AND PREVENTIVE
MAINTENANCE
The EDITION BLUE 60-R does not require service of any
type. However, there are a few precautions you should
heed to ensure your amp lasts for many years.
• Ensure all peripheral devices, cords and cables are in
a state of good repair. Defective speaker cables are
the most common cause of power amp failure. Poor-
quality cables will cause hum and undesirable noise.
• Make certain your amp's ventilation ducts are not
blocked or covered. Proper cooling will prolong the
life of your amp.
• Avoid mechanical shocks and exposure to extreme
heat, dust and especially moisture.
• When connecting peripheral devices, always pay
close attention to their specifications. Never connect
devices with high output signal levels (e.g. power
amps) to your amp's input.
• Ensure you have the correct AC power rating
available before you plug in the amp. If in doubt, ask
the venue's sound technician or the custodian of the
building you are rehearsing in.
• Refrain from do-it-yourself repairs! Have a qualified
service technician replace internal fuses.
With the unit off and unplugged, use a soft damp cloth
to clean the exterior surface of the EDITION BLUE 60-R.
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