Fender RUMBLE STAGE 800 - Safety and Protection; Speaker Cable Safety Precautions

P. FOOTSWITCH: Connect four-button MGT-4 footswitch or EXP-1 Expression Pedal here.
Q. USB PORT: Amp connection point for USB audio recording.
R. LINE OUT: Balanced line outputs for connection to external recording and sound reinforcement equipment.
The line out default setting is PRE/POST (mono), but can be congured as right/left stereo (post) outputs.
S. FX SEND/RETURN: Right/left send and return for stereo external eects use. Eects added here are “glob-
al” (not preset-specic) and act as the last elements in the signal path. Use left channel for mono eects.
The Rumble Stage 800 amplier’s high-power class “D” amplier operates in bridge mode, meaning that
voltage is present in both terminals (+) and (-). Use caution when connecting a speaker cable to the External
Speaker output on the rear panel—never let the tip (+) or sleeve (-) of a speaker cable (see illustration below)
contact the amp’s metal chassis or any other earth-grounded electrical equipment (i.e., audio mixers and
other sound reinforcement devices). A speaker cable plugged into the amp’s External Speaker output should
be connected only to another speaker cabinet.
Use caution when connecting 1/4” speaker cables with non-insulated (bare metal) plugs—always make speak-
er cable connections with the amp’s power turned o.
SAFETY NOTE: SPEAKER CABLES
Rumble Studio 40 and Rumble Stage 800 use class-D power ampliers with thermal and short circuit protec-
tion. In the event of a short circuit, the amplier will temporarily mute (no sound from speakers) and resume
normal operation when the fault is removed.
For increased thermal performance, Rumble Stage 800 has variable-speed fan cooling that starts at low speed
and increases as amplier temperature rises with playing use.
Leave at least 6” clearance between the amplier vents and other objects. If the amplier vents are blocked
or if the amp is used in an extremely hot environment, the amp may overheat and trigger thermal protection,
causing temporary speaker muting. Normal operation will automatically resume after the temperature cools
to a level within operating range.
Under the most severe operating conditions, the amp can overheat to the point of interrupting power, result-
ing in a blank DISPLAY WINDOW (G) and no sound from the speakers. In this unlikely event, normal operation
will automatically resume after the temperature cools to a level within operating range. Rumble Studio 40
may require the POWER switch (L) to be turned o and back on again after such a power interruption.
THERMAL PERFORMANCE AND PROTECTION
4
Insulation
( + )
( - )