Fender Rumble LT25 Users Manual
BASS AMPLIFIER
EXPANDED OWNER’S MANUAL
CONTENTS
Introduction 1
Control Panel 2
Presets Basics 3
Editing and Saving Presets 4
Accessing Preset Contents 4
Editing and Saving Amplier Control Settings 4
Changing the Amplier Model in a Preset 7
List of Rumble LT25 Amplier Models 8
Editing and Saving Eects Control Settings 9
Replacing, Adding and Deleting Eects 10
Setting Delay Times with the Tap Button 12
List of Rumble LT25 Eect Models 13
Menu Functions 14
Tuner 15
Footswitch 16
Settings 17
Restore 17
Auxiliary Input and Headphone Output 18
USB Port 18
Specications 19
INTRODUCTION
This expanded owner’s manual is a thorough user’s guide to the features and functions of the Rumble LT25
amplier.
As a complement to the Rumble LT25 Quick Start Guide that comes with each amplier, this manual presents a detailed look at the amp’s versatile features. This includes navigation and modication of the onboard
presets, and comprehensive descriptions of the amplier and eect models. It also includes illustrated stepby-step instructions for using Rumble LT25’s onboard tuner, footswitch, USB port and other functions.
While this expanded manual presents the most current version of the amplier, also check back for updated
manual versions that will serve as even more helpful guides as Rumble LT25 and its capabilities evolve.
Be sure to check fender.com/rmware/support regularly for rmware updates that improve and enhance the
Rumble LT25 experience.
1
CONTROL PANEL
The Rumble LT25 top control panel consists of an INSTRUMENT INPUT, ve CONTROL KNOBS, a DISPLAY
WINDOW, an ENCODER wheel, four UTILITY pushbuttons, a FOOTSWITCH INPUT, an AUXILIARY INPUT (1/8”),
a HEADPHONE OUTPUT (1/8”), a TAP LIGHT and a USB PORT.
GAIN
BASS
MIDDLE
TREBLE
MASTER
A. FOOTSWITCH (“FTSW”): Connect optional single-button footswitch here (page 16).
B. INPUT: Plug instrument in here.
C. AUXILIARY INPUT, HEADPHONE OUTPUT: 1/8” auxiliary input for connecting external audio devices,
and 1/8” output for headphone use (page 18). Headphone output disables speaker.
D. GAIN: Aects gain setting in each preset.
E. BASS: Aects bass tone setting in each preset.
F. MIDDLE: Aects midrange tone setting in each preset.
G. TREBLE: Aects treble tone setting in each preset.
H. MASTER VOLUME: Controls overall volume.
I. DISPLAY WINDOW: Shows preset in use, preset contents and parameters, and other functions (i.e., tuner
and other menu functions).
J. ENCODER: Rotary control with press-switch function. For viewing, selecting and adjusting Rumble LT25
presets, controls and other functions.
K. UTILITY BUTTONS
BACK: Returns user to the previous screen or original preset screen.
SAVE: For saving preset modications, renaming presets and saving presets to a new location.
MENU: For accessing tuner, footswitch and other functions (page 14).
TAP: For setting delay times (page 12) and accessing built-in tuner (page 15).
L. TAP LIGHT: Flashes in time with delay eects.
M. POWER: Turns amplier on and o.
N. USB PORT: Amp connection point for USB audio recording (page 18).
O. IEC POWER INLET (REAR PANEL; NOT SHOWN): Using the included power cord, connect to a grounded
outlet in accordance with the input power voltage and frequency specied at the power inlet.
2
PRESET BASICS
Rumble LT25 features 30 sequentially numbered presets. Each preset consists of an amplier and one or
more eects (or, in some cases, no eects). Note that when turning the amplier on, the default active preset
is always factory preset 01. Further, 20 additional presets are available when using the “REPLACE” feature
(page 7).
To scroll through presets, turn the ENCODER; whichever preset is displayed becomes active:
07
ORGAN
TONE
Rumble LT25’s 30 original factory presets are:
01 STUDIO CLEAN 11 FLANGER BASS 21 RUMBLE OD
02 STUDIO SQUEEZE 12 BAY AREA PUNK 22 BIG ECHO
03 RUMBLE 13 PUNCHY OCTAVE 23 WAH ECHO
04 ELEKTRIK UPRIGHT 14 CHORUS 24 WARM WAH
05 DIRTY ROCKBASS 15 FILTHY PUNCH 25 SHOWMAN OD
06 FAT OLD BASSMAN 16 HAND OF DOOM 26 HESHER
07 ORGAN TONE 17 70S ROCK 27 PHASER BASS
08 SLAP BASS 18 FAT BOTTOM 28 TREMOLO
09 SYNTH FUZZ 19 MONSTER BOT 29 AUDIO RAGE
10 VINTAGE FUZZ 20 GRUNGE 30 CLICKY PICK
Additionally, 20 more presets are available using the “REPLACE” function described on page 7. These are:
31 DARK ROOM 38 STEP AND GRIND 45 BASS ODYSSEY
32 BIG SUSTAIN 39 SHOWMAN BOT WAH 46 300 GRIT
33 SPACE PAD 40 GRITS N CREAM 47 FEEL THE PAIN
34 BUZZ BOMB 41 WARM BOT WAH 48 SLAPPY SCOOP
35 WARM CHORUS 42 HEART BREAKER 49 SOCAL SKA PUNK
36 80S BRIT 43 CHORUS DIRT 50 GOOD TO BE KING
37 MONSTER BOT WAH 44 ANCIENT MARINER
3
EDITING AND SAVING PRESETS
Presets can be easily edited and, if desired, renamed and saved in place or saved in a dierent location. The
controls of each amplier type can be adjusted, or an amp model can be replaced with a dierent one. Similary, various eects controls can be adjusted, or eects can be removed from or added to a preset.
When a preset is active, the box containing its number is blue, indicating that no edits have been made. Once
an edit is made, the box containing the preset number turns red and the preset title screen will read “UNSAVED”. When edits are saved, the preset number box returns to blue and the “UNSAVED” title clears.
ACCESSING PRESET CONTENTS
To access the contents of a preset, press the ENCODER. From the top down, the DISPLAY WINDOW will then
show the number and name of the preset, the amplier type in use, and four boxes that organize the eects
used for that preset (if any). These eects category boxes are labeled STOMP (stompbox), MOD (modulation),
EQ and DELAY. When rst accessing preset contents, the preset name and amplier type are highlighted in blue:
PRESET NAME AND NUMBER
AMPLIFIER TYPE
23 WAH ECHO
AMPLIFIER
BIG RUMBLE
STOMPEQMOD
EFFECTS CATEGORY BOXES
DELAY
Select the amp model or one of the eects category boxes by turning and pressing the ENCODER. The active
selection is then highlighted in blue:
23 WAH ECHO
AMPLIFIER
AMPLIFIER
BIG RUMBLE
80S ROCK
STOMP MOD
STOMP MOD
EQ
DELAY
REV
EDITING AND SAVING AMPLIFIER CONTROL SETTINGS
To edit and save individual control settings of a preset’s amplier model, rst select the amp model by pressing the ENCODER on it. The DISPLAY WINDOW will then show a list of controls for the amp model in use:
23 WAH ECHO
AMPLIFIER
BIG RUMBLE
STOMPEQMOD
DELAY
4
BIG RUMBLE
GAIN
BASS
MIDDLE
VOLUME
7.0
5.5
5.5
5.5TREBLE
10.0
There are two ways to adjust an amp control knob setting. A control parameter that corresponds to an actual
MIDDLE
TREBLE
MASTER
physical knob on the control panel can be adjusted simply by turning the physical control knob until the
desired value is reached in the DISPLAY WINDOW. In the example below, the amp model’s MIDDLE setting is
adjusted by turning the physical MIDDLE control knob on the control panel:
80S ROCK
BIG RUMBLE
GAIN
GAIN
VOLUME
BASS
MIDDLE
VOLUME
BASS
7.3
7.0
4.1
5.5
5.5
7.9TREBLE
5.5TREBLE
4.5MIDDLE
10.0
6.4
GAIN
BASS
MIDDLE
TREBLE
MASTER
Alternately, select a control parameter by turning and pressing the ENCODER; its surrounding box will turn
from blue to red:
BIG RUMBLE
GAIN
BASS
VOLUME
7.0
5.5
5.5MIDDLE
5.5TREBLE
10.0
BIG RUMBLE
GAIN
BASS
VOLUME
7.0
5.5
5.8TREBLE
5.5MIDDLE
5.5TREBLE
10.0
The control can then be adjusted by turning the ENCODER or by turning a corresponding physical control
knob on the control panel (if present*):
BIG RUMBLE
GAIN
BASS
VOLUME
7.0
5.5
7.9MIDDLE
5.5TREBLE
10.0
BIG RUMBLE
GAIN
BASS
VOLUME
7.0
5.5
7.9MIDDLE
5.5TREBLE
10.0
*
Note that for control parameters such as VOLUME that have no corresponding physical knob
on the control panel, this is the only method of adjustment.
At this point, press the ENCODER or the BACK utility button (green arrow) to accept the adjusted control values. Pressing BACK returns the user to the preset contents screen; pressing the ENCODER lets the user continue making controls setting changes, and the box surrounding the control setting will return to blue. When
control setting edits are complete, press the SAVE utility button to save the changes to the preset.
BIG RUMBLE
GAIN
BASS
VOLUME
7.0
5.5
7.9MIDDLE
5.5TREBLE
10.0
5
Loading...