Fender RUMBLE 800 COMBO, Owner'S Manual

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Connect a footswitch to amplifier to remotely engage OVERDRIVE
(E). Three Fender footswitches will work (shown at right with part
numbers; Economy footswitch model is included with Rumble 800
combo), or any generic single-button latching-type footswitch will
work. Contact a local Fender dealer to purchase a Fender footswitch
of choice.
During footswitch use, front-panel OVERDRIVE switch remains
functional. Note that normal front-panel switch position (in=ON,
out=OFF) can become reversed depending on footswitch status .
Overdrive LED status on front panel will always be correct, but
indicator light on an LED footswitch (such as model 0994052000
at right) may display incorrectly (i.e., LED is off when OVERDRIVE is
on) depending on front-panel switch status. When using an LED
footswitch, keep front-panel OVERDRIVE switch in OUT position to
ensure correct display status on footswitch LED.
ECONOMY FOOTSWITCH (Included, PN 0994049000):
Basic black single-button on/off footswitch.
VINTAGE FOOTSWITCH (Optional, PN 0994054000):
Chrome single-button on/off footswitch.
LED FOOTSWITCH (Optional, PN 0994052000):
Contemporary single-button on/off footswitch with LED
indicator. NOTE: For correct operation of footswitch LED,
overdrive effect must be switched off before connecting
this footswitch.
FOOTSWITCHES FOOTSWITCHES
EN
GL
ISH
K. POWER SWITCH: Turns amplifier on and off. When quickly turning
the power off and then on again, a brief delay can occur for 20-30
seconds.
L. IEC POWER INLET: Connect included power cord to a
grounded A/C electrical outlet in accordance with voltage and
frequency ratings specified on rear panel of amplifier.
M. EXTERNAL SPEAKER OUTPUT/IMPEDANCE SWITCH: Connect
an external speaker cabinet (8Ω or 4Ω minimum impedance)
to this combination output using a Speakon® or 1/4” cable.
Set switch to match impedance rating of external cabinet;
continuous power rating of external cabinet must meet or
exceed power rating listed for chosen switch setting. Set switch
to 8Ω when no external cabinet is connected.
The Rumble 800 Combo’s high-power class “D” amplifier
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.
N. HORN SWITCH: Activates high-frequency driver.
O. EFFECTS LOOP: Connect SEND to external effect input; connect
external effect output to RETURN. Effects loop use reduces
amount of noise and tone degradation caused by effects pedals.
For multi-amp configuration, connect primary amp SEND to
secondary amp RETURN. Instrument is connected to primary
amp; preamp controls will adjust tone for both units (secondary
unit preamp controls are bypassed). Use MASTER volume on
both amps to independently control loudness of each.
P. AUX IN: Connect external audio player here. Adjust aux
signal volume/tone at its source; amp MASTER volume (H)
doesn’t affect external device volume. Earth-grounded audio
equipment such as a laptop with a connected power supply
may result in unwanted noise/hum.
Q. HEADPHONES: Stereo headphone output (16Ω minimum
impedance) automatically mutes speaker output.
R. FOOTSWITCH: Allows remote switching of OVERDRIVE section.
See “Footswitches” section below.
S. LINE OUT/GROUND LIFT: Balanced output for connection to
external devices such as sound reinforcement and recording
equipment. Pressing GND LIFT button can help eliminate noise
caused by connection to improperly grounded equipment.
Select PRE for direct unaffected signal; select POST for fully
processed signal (except MASTER). Speaker cabinet connection
not required for silent recording applications.
Insulation
( + )
( - )
REAR PANEL