Fender Rumble LT25 User manual

EXPANDED OWNER’S MANUAL

BASS AMPLIFIER

CONTENTS

Introduction 1

Control Panel 2

Presets Basics 3

Editing and Saving Presets 4

Accessing Preset Contents 4

Editing and Saving Amplier Control Settings 4

Changing the Amplier Model in a Preset 7

List of Rumble LT25 Amplier Models 8

Editing and Saving Eects Control Settings 9

Replacing, Adding and Deleting Eects 10

Setting Delay Times with the Tap Button 12

List of Rumble LT25 Eect Models 13

Menu Functions 14

Tuner 15

Footswitch 16

Settings 17

Restore 17

Auxiliary Input and Headphone Output 18

USB Port 18

Specications 19

INTRODUCTION

This expanded owner’s manual is a thorough user’s guide to the features and functions of the Rumble LT25

amplier.

As a complement to the Rumble LT25 Quick Start Guide that comes with each amplier, this manual pres-

ents a detailed look at the amp’s versatile features. This includes navigation and modication of the onboard

presets, and comprehensive descriptions of the amplier and eect models. It also includes illustrated step-

by-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 amplier, 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.

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.

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: Aects gain setting in each preset.

E. BASS: Aects bass tone setting in each preset.

F. MIDDLE: Aects midrange tone setting in each preset.

G. TREBLE: Aects 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 modications, 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 eects.

M. POWER: Turns amplier 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 specied at the power inlet.

GAIN BASS MIDDLE TREBLE MASTER

PRESET BASICS

Rumble LT25 features 30 sequentially numbered presets. Each preset consists of an amplier and one or

more eects (or, in some cases, no eects). Note that when turning the amplier 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:

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

ORGAN

TONE

EDITING AND SAVING PRESETS

Presets can be easily edited and, if desired, renamed and saved in place or saved in a dierent location. The

controls of each amplier type can be adjusted, or an amp model can be replaced with a dierent one. Simila-

ry, various eects controls can be adjusted, or eects 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“UN-

SAVED”. 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 amplier type in use, and four boxes that organize the eects

used for that preset (if any). These eects category boxes are labeled STOMP (stompbox), MOD (modulation),

EQ and DELAY. When rst accessing preset contents, the preset name and amplier type are highlighted in blue:

Select the amp model or one of the eects category boxes by turning and pressing the ENCODER. The active

selection is then highlighted in blue:

EDITING AND SAVING AMPLIFIER CONTROL SETTINGS

To edit and save individual control settings of a preset’s amplier model, rst select the amp model by press-

ing the ENCODER on it. The DISPLAY WINDOW will then show a list of controls for the amp model in use:

23 WAH ECHO

AMPLIFIER

STOMP

MOD

DELAY

BIG RUMBLE

PRESET NAME AND NUMBER

AMPLIFIER TYPE

EFFECTS CATEGORY BOXES

AMPLIFIER

80S ROCK

STOMP MOD

REV

23 WAH ECHO

AMPLIFIER

STOMP MOD

DELAY

BIG RUMBLE

23 WAH ECHO

AMPLIFIER

STOMP

MOD

DELAY

BIG RUMBLE

7.0

5.5

10.0

BASS

GAIN

MIDDLE

VOLUME

BIG RUMBLE

5.5TREBLE

There are two ways to adjust an amp control knob setting. A control parameter that corresponds to an actual

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:

Alternately, select a control parameter by turning and pressing the ENCODER; its surrounding box will turn

from blue to red:

The control can then be adjusted by turning the ENCODER or by turning a corresponding physical control

knob on the control panel (if present*):

At this point, press the ENCODER or the BACK utility button (green arrow) to accept the adjusted control val-

ues. Pressing BACK returns the user to the preset contents screen; pressing the ENCODER lets the user contin-

ue 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.

5.8TREBLE

7.3

4.1

6.4

VOLUME

GAIN

BASS

80S ROCK

4.5MIDDLE

7.9TREBLE

7.0

5.5

10.0

BASS

GAIN

MIDDLE

VOLUME

BIG RUMBLE

5.5TREBLE

GAIN BASS

MIDDLE TREBLE MASTER

7.0

5.5

10.0

BASS

GAIN

VOLUME

BIG RUMBLE

5.5TREBLE

5.5MIDDLE

5.8TREBLE

7.0

5.5

10.0

BASS

GAIN

VOLUME

BIG RUMBLE

5.5TREBLE

5.5MIDDLE

7.0

5.5

10.0

BASS

GAIN

VOLUME

BIG RUMBLE

5.5TREBLE

7.9MIDDLE

5.8TREBLE

7.0

5.5

10.0

BASS

GAIN

VOLUME

BIG RUMBLE

5.5TREBLE

7.9MIDDLE

GAIN BASS

MIDDLE TREBLE MASTER

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.

7.0

5.5

10.0

BASS

GAIN

VOLUME

BIG RUMBLE

5.5TREBLE

7.9MIDDLE

IMPORTANT: If edited amp control settings are not saved, the preset will revert to its original amp control

settings when returning to the preset after leaving it, or when turning the amplier o and back on again. To

save edited amp control settings, press the SAVE utility button and use the ENCODER to scroll to one of three

options—SAVE, SAVE AS or REPLACE. Each is detailed below.

SAVE: Keeps an edited preset in the same location with the same name. To do this, press the SAVE utility

button and use the ENCODER to scroll to “SAVE”. Press the SAVE utility button again or press the ENCODER. A

brief “PRESET SAVED!” screen will then ash before returning to the original preset screen:

SAVE AS: Enables saving an edited preset in a dierent position, with or without a dierent name. To do this, press

the SAVE utility button and use the ENCODER to scroll to“SAVE AS”. Press the ENCODER to access a“CHOOSE SLOT”

list of locations where the preset can be moved. Select a new location by turning and pressing the ENCODER:

NOTE: When using “SAVE AS”, note that a preset can be moved to a dierent position even if no edits have been made.

Also note that saving a preset to a dierent location permanently deletes the previous contents of the new location.

Whether renaming the preset or not when using “SAVE AS”, a name must be entered by pressing the ENCOD-

ER to activate a cursor, then spelling out the name by turning and pressing the ENCODER to scroll through

and select characters. All characters can be cleared by using the ENCODER to scroll to and select “CLEAR ALL”.

When name entry is completed for the new location, save it by pressing the SAVE utility button or by using

the ENCODER to scroll to and select “SAVE”. A brief “PRESET SAVED!” screen will then ash before returning to

the original preset screen:

STUDIO

SQUEEZE

SAVE

REPLACE

SAVE AS

PRESET SAVED!

STUDIO

SQUEEZE

SAVE

REPLACE

SAVE AS

04 ROCK A B...

07 ORGAN T...

06 FAT OLD...

08 SLAP BASS

10 VINTAGE...

09 SYNTH FU...

CHOOSE SLOT

S T U D I O _ _

Q U E E Z E _

SAVE

CLEAR ALL

RENAME

PRESET SAVED!

REPLACE: Any existing preset can be replaced with another by pressing the SAVE utility button, using the

ENCODER to scroll to and select “REPLACE”and choosing from 50 replacement presets (the 30 factory pre-

sets, plus 20 additional presets listed on page 3). After selecting “REPLACE”, use the ENCODER to scroll to any

of the 50 available presets; each one is automatically “previewed”so the user can hear the sound before the

preset is loaded. Press the ENCODER to select the preset, conrm it by using the ENCODER to scroll to and

select “NO CANCEL” or “YES REPLACE” (not shown) and save and save it in the chosen slot:

CHANGING THE AMPLIFIER MODEL IN A PRESET

The amplier model in a preset can be replaced with another one (see list of Rumble LT25 amplier models on

page 8). To do this, acess the contents of a preset by pressing the ENCODER on it; the amp model will au-

tomatically be highlighted. Press the ENCODER again to see a list of controls for the amp model in use; the

name of the amp model appears at the top of this list.

Press the ENCODER once more to activate the amplier replacement function; the box surrounding the amp

name will turn from blue to red, and white arrows will bracket the amp name. Turn the ENCODER to scroll to a

new amp model. Press the ENCODER to accept the amp model change, after which the box surrounding the

amp name will return to blue; or press the BACK utility button (green arrow) to accept the amp model change

and return to the preset contents screen:

IMPORTANT: If an amplier replacement is not saved, the preset will revert to its original amp type when re-

turning to the preset after leaving it, or when turning the amplier o and back on again. To save a preset amp

replacement, follow the SAVE, SAVE AS or REPLACE instructions on page 6 and at the top of this page.

18 AUDIO RA...

AMPLIFIER

STOMP

MOD

DELAY

ARENA BASS

5.5

6.5

3.2

6.8

BASS

GAIN

MIDDLE

VOLUME

ARENA BASS

6.5TREBLE

BURN

5.5

7.1

3.7

8.6

BASS

GAIN

MIDDLE

VOLUME

4.2TREBLE

MONSTER

5.5

7.1

3.7

8.6

BASS

GAIN

MIDDLE

VOLUME

4.2TREBLE

MONSTER

STUDIO

SQUEEZE

SAVE

REPLACE

SAVE AS

SAVE

SAVE AS

SUPER

ROCK

SAVE

SAVE AS

PRESS SAVE

TO CONFIRM

17 / 50

REPLACE

70S ROCK

RUMBLE LT25 AMPLIFIER MODELS

This table lists the amp models in Rumble LT25. The amp label used in each preset appears in the lefthand

column, followed by the amp type and a brief description in the righthand column.

STUDIO 1 Direct-to-mixing-desk studio purity with clean, uncolored tonal response

STUDIO 2 Similar to the above, but like a tube console for increased harmonic coloration

RUMBLE Based on the clean-to-gritty 2x10” tone of Fender’s best-selling bass amps

BIG RUMBLE Same as above, but with the added boom of a 1x15 cab

WARM COMBO Based on the beloved mid-’60s Ampeg B-15NF

ARENA BASS Inspired by the seismic all-tube sound of the Ampeg SVT

CLEAN BASS Based on the ’80s/’90s-era power and clarity of the Gallien-Krueger 800RB

SLAP BASS Inspired by the full-range high-end 1990s indispensability of the SWR® Redhead

BASS 300 Based on Fender’s Bassman® 300 Pro all-tube giant with distinctively versatile tone

shaping and blendable overdrive

MONSTER High-gain all-tube boutique guitar amp re-imagined for bass

OLD FENDER Based on the original-era boom of Fender’s vintage “TV-Front” Bassman

SHOWMAN Based on the ’60s/’70s all-tube Fender classic Dual Showman, used on big stages

everywhere

GRUNGE BASS Inspired by the “sludgy” majesty of 1970s-era Orange amps

70S ROCK Inspired by a late ’60s/early ’70s Marshall Super Bass, a quintessential

early hard-rock bass amp

ANGRY BRIT Inspired by the ’80s metal tone of the Marshall JCM800 guitar amp

BASSMAN 2K Based on Fender’s present-day agship Super Bassman amp, with blendable tube

overdrive

Champ, Deluxe, Bassman, Princeton, Deluxe Reverb and Twin Reverb are trademarks of FMIC. All other non-FMIC product names and trademarks appearing in this manual

are the property of their respective owners and are used solely to identify the products whose tones and sounds were studied during sound model development for this

product. The use of these products and trademarks does not imply any aliation, connection, sponsorship, or approval between FMIC and with or by any third party.

PRESET AMP LABEL AMP TYPE AND DESCRIPTION