22 Noise Gate Threshold: A Tip from the Designer - continuation
The most common source of noise is 50 Hz or 60 Hz (hertz/cycle) mains hum, particularly when the
guitar is positioned near transformers and power units.
Because in worst-case scenarios this humming can attain extremely high levels, the Noise Gate can
hardly distinguish between the musical signal and noise. This makes it hard to find the right Threshold
setting. It is entirely possible for this humming and other noise to rise to a level that deactivates the
Noise Gate and therefore becomes audible. My advice is to stay as far away from transformers and
power units as space allows.
23 F.X. Loop Send
Connect the FX Loop output to a signal processor's input/return jack using the shortest possible
shielded cord equipped with 1/4" plugs. Activate and deactivate it via a Footswitch connected to the
Footswitch terminal 20. In the signal path, the FX Loop is located post preamp and pre the two power
amp Master knobs.
24 F.X. Loop Return
Connect the FX Loop input to a signal processor's output/send jack using the shortest possible shielded
cord equipped with 1/4" plugs. Activate and deactivate it via a Footswitch connected to the Footswitch
terminal 20. In the signal path, the FX Loop is located post preamp and pre the two power amp Master
knobs.
25 Balance
FX mix control for the FX Loop. When the knob is set to Dry, the amp signal is routed through with no
processed signal (0% wet balance) added to the mix. Twist the knob clockwise to blend in the
processed signal (parallel/passive, wet balance 1-99%, depending on knob position). When the knob
arrives at the Effect position, only the wet signal (that is, the processed signal generated by the
connected effect device) is patched to the power amp (serial, 100% wet).
NOTE:
Set this knob to Dry when this loop is not in use!
26 Poweramp Output 4 Ohms parallel
4 ohms speaker output jacks, internal parallel signal path for the connection
of one 4 ohms cabinet or two 8 ohms speaker cabinets.
27 Poweramp Output 8 Ohms parallel
8 ohms speaker output jacks, internal parallel signal path for the connection
of one 8 ohms cabinet or two 16 ohms speaker cabinets.
28 Poweramp Output 16 Ohms
16 ohms speaker output jack, for the connection of one 16 ohms speaker cabinet.
NOTE:
Never operate the amplifier without a sufficient load, otherwise you may damage or
destroy the power amp! Ensure your cabinet’s specifications match the respective output’s specs.
Possible speaker cabinet options:
1. One 4-ohm cabinet connected to a 4-ohm jack;
2. Two 8-ohm cabinets connected to the 4-ohm jacks;
3. One 8-ohm cabinet connected to an 8-ohm jack;
4. Two 16-ohm cabinets connected to the 8-ohm jacks;
5. One 16-ohm cabinet connected to the 16-ohm jack;
6. An 8-ohm cabinet connected to one of the 4-ohm jacks in combination
with a 16-ohm cabinet connected to one of the 8-ohm jacks;
