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SPEAKER OUTPUT ¼" speaker cable jacks. Use a ¼" speaker cable to connect your speaker cabinet to the amplifier using
these jacks. If you use one speaker cabinet, use the jack labeled MAIN. If you want to run two cabinets in parallel, connect the
second cabinet to the amplifier using the jack labeled EXTENSION.
NOTE – never turn your amplifier to OPERATE mode without connecting the amplifier to a speaker cabinet or suitable dummy
load! Failing to do so may damage your amplifier!
IMPEDANCE three-way rotary selector. Set this selector to the position that matches the impedance of your speaker cabinet.
NOTE – if you are using two speaker cabinets in parallel (ex – two 16 Ohm cabinets), set the impedance selector to half that of
a single cabinet (in this case, 8 Ohms).
NFB three-way toggle switch. This gives you the ability to select between three different negative feedback settings. In the UP
position, the NFB is at a stock setting - NONE. This will provide the most gain and the smoothest transition into overdriven
tones.
In the middle position, there is still no negative feedback – but it adjusts the phase inverter for less output. This will provide a
slightly cleaner tone than the stock setting.
In the bottom position, there added negative feedback to the middle setting. This provides the most linear setup, and more
power section headroom.
There is no right or wrong, so use your ears for what works best for you, your guitars, pedals, and speakers!
NOTE – experiment with different input jack combinations and NFB settings if you are trying to maximize your clean headroom!
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