Mesa/Boogie Rectifier BADLANDER EL84/25 Owner'S Manual Download Page 8

INSTANT GRATIFICATION

Here below is an “instant gratification” tour of the Badlander’s two channels using the top channel set to 

CRUNCH for a heavy rhythm sound and the bottom channel set to CRUSH for a high gain soloing tone. This is 

just one of the countless possible configurations you could use to dedicate the channels to different stylistic 

roles and tasks. You may also set both channels to the same Mode to make footswitching between different 

settings of the same gain range possible. 

There are many possibilities for configuration across the entire gain spectrum, from traditional cleans to mod-

ern gain extremes, so set the channels according to your preferences, your instruments, and your needs and 

experiment as much as possible. We feel confident that regardless of how you configure the two channels, the 

Badlander will impress you with its rewarding Tone and incredible versatility. 

HELPFUL HINTS

•  We recommend having at least one speaker cabinet on the floor of the stage or room you are playing in. 

The sympathetic resonance of the sound coming through the floor and up through your body results in 

a more tactile feel that we, and most players, find favorable. There may be times when this is impossible, 

impractical, or unadvisable, such as when there are many live mics with high input sensitivity dialed up on 

the FOH or monitor console or where there are high stage volumes in place, and the bleed factor will be 

too great. However, considering factors such as those, when possible, try having at least one cabinet on 

the floor for a great sound and feel on the strings/instrument. 

•  Gain is only a part of great Tone. While the Badlander is capable of mighty amounts of gain, it is not neces-

sarily wise to apply it in excess. It IS a modern amp, yes, but it is also capable of GREAT Classic and more 

traditional sounds that see the GAIN controls used with taste and in their middle ranges in all Modes. Sure, 

there are also great sounds at the top of the GAIN controls, especially in CLEAN and CRUNCH Modes, but 

we encourage you to explore the less extreme gain ranges in the Modes as well, for that is where some of 

the most expressive, dynamic, and character-rich sounds reside. 

•  Use the MID control set in its middle to upper range to bring forward punch and tightness, or set below 

11:00 to scoop the sound for a wider, more 3-D sound and a feel that can create the impression of less 

resistance on the strings. The MID is very powerful in determining the character and blend within the Tone 

Controls, and it should be experimented with in all three Modes to learn its part in the overall shape of the 

sound ...Almost more than any of the other controls except perhaps the GAIN and TREBLE, as its setting 

tends to determine much about the overall Tone as well as the feel. 

•  This circuit, like all those tracing some architecture through Britain and back to LA and the 50s Tweeds de-

signed by the late, great Leo Fender, finds the TREBLE control capable of very bright sizzle and formidable 

cut. That can be useful, however, we find some of our favorite, most balanced sounds below 12:00 on the 

TREBLE control. Some even turn the TREBLE all the way off for certain things, like liquid single note sounds 

that are as fat as possible. Just be open to the possibility that you may find the TREBLE in the lower half of 

its range for at least some of your favorite sounds. 

120 V~

60 Hz

1.25 A

1.25 A

SLO

BLO

FUSE

POWER

POWER

STANDBY

ON

ON

INPUT

FTSW

MASTER

SEND

RETURN

FUSE

FX LOOP

PRESENCE

BASS

MID

TREBLE

GAIN

CH1

CH2

FT

SW

25W

10W

MESA

 Part #497834

Badlander 25 Head INK COLOR: SIL

VER

9/1/2022 12:48PM

REV. 6  MD

WARNING:

Replace fuse with same type/rating only.

Do not expose to rain or moisture.

CAUTION:

Risk of Electric Shock. Do Not Open.

No user serviceable parts inside.

TUBE GUIDE

5 x 12AX7

2 x EL84

EL-84 TUBE POWER

EL84

/

25

C

R

U

N

C

H

CLEAN

CRUSH

C

R

U

N

C

H

CLEAN

CRUSH

ME

SA

BADLANDER

WARNING:

Unplug power

before servicing

fuse or chassis

4 OHM

4 OHM

8 OHM

HEADPHONES

LEVEL

USB

DIRECT OUT

SPEAKERS

CABCLONE

 IR

8

2
1

3

4 5

6

7

8

2
1

3

4 5

6

7

LIFT

CH1

CH2

CAB

SELECT

GND

INTERNAL LOAD ACTIVE WHEN SPEAKER DISCONNECTED

AMPLIFIER

44YV

HAND-WIRED IN

PETALUMA, CA, USA

BADLANDER

™ 

25

ALL TUBE AMPLIFIER

PAGE 5

Summary of Contents for Rectifier BADLANDER EL84/25

Page 1: ...Owner s Manual M ESA BADLANDER EL84 25...

Page 2: ...like you Our 50 year commitment to excellence along with our solemn promise to musicians to treat each of them as we ourselves would wish to be treated guarantees you an experience that will make you...

Page 3: ...TER 10 MULTI WATT POWER 11 POWER AC 11 COLD START PROCEDURE 12 STANDBY 12 STANDBY Tube Issues Troubleshooting 12 REAR PANEL 13 SPEAKER OUTPUTS 13 CABCLONE IR DIRECT INTERFACE SECTION 14 MANIPULATING S...

Page 4: ...nnect the plug shall remain accessible after installation 17 WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 18 WARNING Do not defeat the safety g...

Page 5: ...ubject to the following two conditions This device may not cause harmful interference This device must accept any interference received including interference that cause undesired operation Suppliers...

Page 6: ...els allowing for multiple ways to get your gain signatures done be they similar or differing for your two footswitchable sounds PAGE 3 FRONT VIEW BADLANDER 25 REAR VIEW BADLANDER 25 120 V 60 Hz 1 25 A...

Page 7: ...ESA amplifier to feature such comprehen sive convenient and inspiring DI performance With the Badlander s vast preamp versatility power options and the fact you can record or perform silently and safe...

Page 8: ...d CRUNCH Modes but we encourage you to explore the less extreme gain ranges in the Modes as well for that is where some of the most expressive dynamic and character rich sounds reside Use the MID cont...

Page 9: ...Effects Loop is buffered and in theory should be somewhat impervious to Tonal thievery your entire signal will be subjected to whatever the lowest common denominator is in your signal path so take not...

Page 10: ...ller fatter sound will emerge until eventually it will be very fat and compressed and possibly even a little slower feeling along with the added drive and sustain Another handy and reasonable approach...

Page 11: ...ial to a rich and balanced sound in all three of the Modes Setting the TREBLE with care and taste in mind is also critical for the Tone control string to work in harmony In all three Modes the middle...

Page 12: ...ounts of BASS can be applied with very little worry as to detrimental effects Fullness and body warmth and girth are its benefits as the control is increased past 11 00 with most players finding all t...

Page 13: ...TREBLE and or PRESENCE set high will be WAY differ ent and less punishing than what hits the mic s diaphragm and the audience s heads and ears NOTE In the name of great and balanced Tone we d like to...

Page 14: ...The lower position on the toggle provides a low power setting in which the two power tubes run in Triode wiring and produce approximately 10 watts of power Each of these power settings has its own ton...

Page 15: ...ure to use the Cold Start Procedure listed under the POWER instructions above when you return and want to power back up and use the amplifier again NOTE The following information is also found in the...

Page 16: ...f any of the tubes you have remedied the issues and are ready to play If you see a flash or the center of the tube glowing bright red in the center of the metal inside the glass repeat the steps in th...

Page 17: ...he great sounding great feeling built in Reactive Load that allows integration of the power section and all its character with no speaker cabinet connected The feature is a welcome addition for anyone...

Page 18: ...12 THIELE Celestion C90 MESA Proprietary 8 Ohm 6 2x12 LONE STAR Celestion C90 MESA Proprietary 16 Ohm 7 1x12 LONE STAR 23 Celestion C90 MESA Proprietary 8 Ohm 8 1x12 CALIFORNIA TWEED 23 Jensen 100w Al...

Page 19: ...ds with a virtual Cab IR that will not just broadcast them but rather showcase them USB This standard USB port accepts a 2 0 A to B cable not included and is provided for connecting to a computer for...

Page 20: ...ead and features are at an all time pinnacle it is the sound and feel for which you ve likely chosen your pure analog all tube amplifier Therefore we recommend a similar degree of discretion when it c...

Page 21: ...PLAYER NOTES AND REMINDERS PAGE 18...

Page 22: ...fuse with same type rating only Do not expose to rain or moisture CAUTION Risk of Electric Shock Do Not Open No user serviceable parts inside TUBE GUIDE 5 x 12AX7 2 x EL84 EL 84 TUBE POWER EL84 25 C R...

Page 23: ...TION Risk of Electric Shock Do Not Open No user serviceable parts inside TUBE GUIDE 5 x 12AX7 2 x EL84 EL 84 TUBE POWER EL84 25 C R U N C H CLEAN CRUSH C R U N C H CLEAN CRUSH M ESA BADLANDER WARNING...

Page 24: ...worth and it s faster and easier to merely replace the small pre amp tubes ONE AT A TIME with a replacement known to be good But MAKE SURE you keep returning the tubes to their original socket until y...

Page 25: ...of these problems but diagnosis and remedy is usually simple If a fuse blows the problem is most likely a shorted power tube and shorts can either be mild or severe In a mildly shorted tube the electr...

Page 26: ...send you the appropriate match SPEAKER IMPEDANCE MATCHING HOOK UP GUIDE IMPEDANCE Wiring up speakers to provide the most effective load and making sure that all of them are in phase will help in crea...

Page 27: ...t is really not suggested to wire different resistive load values in Parallel 8 and 4 16 and 8 etc The formula for figuring the total impedance in Parallel is the multiplication of the two loads divid...

Page 28: ...to figure out the loads and how to wire them up without applying too low of a resistance on the amplifier Simply connect the Positive side of Speaker A to the Positive side of Speaker C Connect the Ne...

Page 29: ...8 OHM 4 OHM 4 OHM SPEAKERS 8 OHM 4 OHM 4 OHM SPEAKERS 8 OHM 4 OHM 4 OHM SPEAKERS WIRING SCHEMES Amplifier to Speaker Cabinets 8 Ohm Cabinet 8 Ohm Cabinet SAFE MISMATCH 16 Ohm Cabinet SAFE MISMATCH 4 O...

Page 30: ...WIRING SCHEMES Amplifier to Speaker Cabinets 8 Ohm Cabinet 8 Ohm Cabinet 5 8 OHM 4 OHM 4 OHM SPEAKERS PAGE 27...

Page 31: ...PLAYER NOTES AND REMINDERS PAGE 28...

Page 32: ...GAIN STAGE CRUNCH MODE 4TH GAIN STAGE CRUSH MODE BEFORE CHANGING TUBES FLIP POWER STANDBY SWITCH TO OFF INPUT JACK TO MAINTAIN WARRANTY USE MESA BOOGIE TUBES WHEN REPLACEMENT IS NECESSARY FOR CUSTOME...

Page 33: ...Part 497834 Badlander 25 Head INK COLOR SILVER 9 1 2022 12 48PM REV 6 MD WARNING Replace fuse with same type rating only Do not expose to rain or moisture CAUTION Risk of Electric Shock Do Not Open N...

Page 34: ...list is not available when you call helping other customers PLEASE leave a voice message with a phone number and a good time to call and WE LL CALL YOU BACK INTERNATIONAL Customer Support For warranty...

Page 35: ...Thank you for trusting MESA Boogie to be your amplifier company and we wish you many years of toneful enjoyment from this handcrafted instrument...

Page 36: ...22 09 12 1317 Ross Street Petaluma CA 94954 USA 707 778 6565 www mesaboogie com...

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