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Mesa Boogie
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Mesa Boogie Tremoverb User Manual

M
ESA
OOGIE
B
Owner’s Manual
The Spirit of Art in Technology
1317 Ross Street Petaluma, CA 94954
Hello from the Tone Farm...
TREM-O-VERB
TABLE OF CONTENTS Precautions ___________________________________________________________ Page # FRONT PANEL: Overview____________________________________________________ 1 Power-Up __________________________________________________________________ 2 Gain _____________________________________________________________________ 3 Treble / Mid / Bass___________________________________________________________ 3 Presence __________________________________________________________________ 4 Reverb ____________________________________________________________________ 4 Master_________________________________________________________________ 4 & 5 Loop Active Master _________________________________________________________ 5 Tremolo __________________________________________________________________ 5 Power & Standby____________________________________________________________ 6
REAR PANEL: Description and Usage Power Select ______________________________________________________________ 6 Fuse _____________________________________________________________________ 6 Rectifier Select _________________________________________________________ 6 & 7 Ground ___________________________________________________________________ 7 Bias Switch ____________________________________________________________ 7 & 8 FX Send / Return ___________________________________________________________ 8 Send Level ________________________________________________________________ 8 Loop Select _______________________________________________________________ 8 Slave Level Control _________________________________________________________ 8 Speaker (impedance matching) ________________________________________________ 9 External Switching Jack ______________________________________________________ 9 Channel Cloning ___________________________________________________________ 9 Channel Select______________________________________________________________ 9 Sample Settings and Personal Sample Settings ______________________________ 10-11 Replacement Part Numbers __________________________________________________ 12 Diagnosing Tube Problems - Tube Task Chart ___________________________ 13, 14 & 15 Bias Adjustment part of a continuing series _________________________ 16, 17, 18 & 19
Your MESA/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly.
USE COMMON SENSE AND ALWAYS OBSERVE THESE PRECAUTIONS:
Do not expose amplifier to moisture, rain or water, direct sunlight or extremely high temperatures.
Always insure that amplifier is properly grounded.
Always unplug AC power cord before changing fuse or any tubes.
When replacing fuse, use only same type and rating.
Avoid direct contact with heated tubes.
Insure adequate air circulation behind amplifier.
Keep amplifier away from children.
Be sure to connect to an AC power supply that meets the power supply specifications listed on the rear of the unit.
If there is any danger of lightning occurring nearby, remove the power plug from the wall socket in advance.
To avoid damaging your speakers and other playback equipment, turn off the power of all related equipment before making the connections.
Do not use excessive force in handling control buttons, switches and controls.
Remove the power plug from the AC mains socket if the unit is to be stored for an extended period of time.
Do not use solvents such as benzene or paint thinner to clean the unit. Wipe off the exterior with soft cloth.
YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE
PERMANET HEARING DAMAGE!
No user serviceable parts inside. Refer service to qualified personnel. Always unplug AC power before
removing chassis.
EXPORT MODELS: Always insure that unit is wired for proper voltage. Make certain grounding conforms
with local standards.
READ AND FOLLOW INSTRUCTIONS OF PROPER USAGE.
TREM-O-VERB
Operating Instructions
OVERVIEW: Congratulations on your choice of the DUAL RECTIFIER TREM-O-VERB. You have purchased a handbuilt instrument of the finest quality and craftsmanship. A unique blend of yesteryears’ black magic power section design combined with our race-shop approach to finely tuned, high gain pre-amp circuitry leaves the TREM-O-VERB standing alone...instantly a classic destined for vintage status. With two channels housing four definitive and distinctly different Modes, a complete array of supremely dialed guitar sounds can be obtained quickly and easily. Add to this Patented Switchable Rectifiers (Tube/Silicon Diode,) and Channel Cloning (TM,) a hard Bypassable / Channel Assignable FX Loop, Spongy / Bold A.C. Power, Reverb, Tremolo and you’ve got the most performance packed, bodacious self contained guitar amp ever. And if all these features don’t tell the truth about the TREM-O- VERB...how about the on board Bias Switch that enables you to use either 6L6 or EL34 power tubes. Customize this dynamic power section for the tube style that fits your music best!
Looking to the rear panel assures that all your interfacing needs are covered. A Parallel Effects Loop with a Mix Control provides tone insurance for even those questionable effects. To use the TREM-O-VERB in larger rack systems, or to interface to other power sections, the Slave Jack and Level Control is a welcome feature. Three speaker jack combinations have been provided... two 4 Ohm, two 8 Ohm and one 16 Ohm - to ensure the proper impedance match to many types of speaker enclosures. The other features will prove to be quite valuable to you and further along in this manual they are covered extensively.
FRONT VIEW HEAD VERSION:
NORMAL
RED=MODERNORG=VINTAGE
CHANNEL CLONING
ORANGE
OFF RED
OFF
ORG TO
MODERN
TM
TREMOLO
DEPTH SPEED
REVERB
LOOP
EXTERNAL
SWITCHING
CHAN. TREMOLO
TREM-O-VERB
ONON
POWER
STANDBY
REAR VIEW HEAD VERSION:
SET TO ORANGE
WHEN USING
FOOTSWITCH OR
EXT. SWITCH
ORANGE
RED TO
VINTAGE
RED
CHANNEL
SELECT
FRONT VIEW COMBO VERSION:
CLEAN
VINTAGE
INPUT FT.SW
HIGH GAIN
BLUES
MODERN
HIGH GAIN
TREBLE MID PRESENCE MASTER FXBASS
GAIN
TREM-O-VERB
16 OHM 8 OHM 8 OHM 4 OHM 4 OHM
SPEAKERS
HAND BUILT IN PETALUMA CA.
TREM-O-VERB
REVERB
LOOP
ACTIVE
MASTER
SLAVE LEVEL
SLAVE OUT
FX
MASTER
IMPORTANT: First, set sounds with Loop Bypassed. Then set Send, Mix & Loop Active Master (front) to 50% for unity gain. With Loop on, adjust Send to match Effect, use Loop Master as return level & live volume control, set Mix for effect depth.
EXT SW
RED
AUTO
LOOP SELECT
ORG
AUTO
BYPASS
LOOP
LOOP ON
ORG & RED
LOOP
ACTIVE
MASTER
SEND LEVEL
MIX LEVEL
100% 0%
SEND
6L6
RETURN
BEST TO USE TUBE RECTIFIER WITH EL-34
Instant Gratification Demo Settings
CLEAN
VINTAGE
HIGH GAIN
VACUUM
TUBES
(NORMAL)
SPEED
GAIN
GROUND
B OFF A
RECTIFIER SELECT
(HI POWER)
ORANGE
SILICON DIODES
OFF RED
OFF
BLUES
MODERN
HIGH GAIN
BIAS SWITCH
CAUTION
BIAS SETTING MUST MATCH TUBES IN USE
TREBLEMIDPRESENCEREVERB BASS
EL-34
TREMOLO
DEPTH
4A SB
FUSE
POWER
INPUTFT.SW
2A
BOLDSPONGY
120 VOLTS 60 Hz 4 AMPS
ONON
POWERSTANDBY
REAR VIEW COMBO VERSION:
120 VOLTS 60 Hz 4 AMPS
BOLD SPONGY
POWER
2A
FUSE
4A SB
VACUUM
TUBES
(NORMAL)
(HI POWER)
RECTIFIER SELECT
GROUND
B OFF A
SILICON DIODES
TREM-O-VERB
BIAS SWITCH
EL-34
BEST TO USE TUBE RECTIFIER WITH EL-34
CAUTION
BIAS SETTING MUST MATCH TUBES IN USE
6L6
RETURN
SEND
0% 100%
MIX LEVEL
SEND LEVEL
ORG
LOOP ON
RED
AUTO
ORG & RED
AUTO
BYPASS
LOOP
IMPORTANT: First, set sounds with Loop Bypassed. Then set Send, Mix & Loop Active Master (front) to 50% for unity gain. With Loop on, adjust Send to match Effect, use Loop Master as return level & live volume control, set Mix for effect depth.
LOOP SELECT
EXT SW
PAGE 1
4OHM 4OHM 8OHM 8OHM 16OHM
SLAVE LEVEL
SLAVE OUT
HAND BUILT IN PETALUMA CA.
SPEAKERS
TREMOLO CHAN.
EXTERNAL
SWITCHING
REVERB LOOP
NORMAL
RED TO VINTAGE
CHANNEL CLONING
SET TO ORANGE
WHEN USING
FOOTSWITCH OR
EXT. SWITCH
ORG TO MODERN
ORANGE
RED
CHANNEL
SELECT
RED=MODERNORG=VINTAGE
FRONT PANEL:
First familiarize yourself with the layout of the front panel and locate the Footswitch Input jack. This jack, when connected to your footswitch will allow you to select either the Lead or Rhythm channel remotely. The rear panel Channel Select toggle must be in the UP position (ORANGE.) If you don’t have a footswitch available, the Channel Switch located on the rear panel ( far left end of panel if facing front of amp ) will activate this switching procedure. Before we get intimate with each control, let’s audition the two channels with a basic clean setting in the VINTAGE ORANGE ( Rhythm Channel ) and a fairly high gain overdriven sound in the MODERN RED (Lead Channel.)
POWER-UP: First remove the protective covers from the tubes (plastic webbing) before connecting the A.C. cord to a power recep­tacle. Connect your favorite guitar to the Instrument Input jack. Turn the power switch “ON” while leaving the STANDBY Switch set to “STANDBY.” (It is always a good idea to practice this start up procedure as at least 30 seconds of warm-up time lessens the shock on cold power tubes, thus prolonging their life substantially.) Next, using the example below as a guide, set the controls as illustrated and
GAIN
CLEAN
VINTAGE
HIGH GAIN
BLUES
MODERN
HIGH GAIN
HEAD VERSION
INPUTFT.SW
POWER
ONON
STANDBY
ORANGE
OFF RED
OFF
TREMOLO
DEPTH SPEED
LOOP
ACTIVE
MASTER
FX
MASTER
PRESENCEREVERB
TREBLEMIDBASS
turn the STANDBY Switch to the “ON” position to listen to the two distinctly different channels using either the footswitch or the Channel Select toggle switch as mentioned in the paragraph above. The above settings are merely examples of the channels, VINTAGE ORANGE and MODERN RED. These two channels are voiced very differently when the Channel Cloning (TM) switch, located on the right side of the rear panel, ( when viewing from the rear ) is set to NORMAL. The Modes are selected using the mini toggle switch just to the right of the Input and Footswitch jacks. ORANGE is the softer, sweeter of the two channels and houses two modes of operation “CLEAN” and VINTAGE HIGH GAIN.” The MODERN RED channel boasts two modes also and these are labled “BLUES” and “MODERN HIGH GAIN.”
NOTE: It is normal to hear a volume level difference when switching from CLEAN to VARIABLE HIGH GAIN. This difference will get larger as the MASTER volume is increased and the amp is played loud. The MODERN RED channel will display a similar volume difference when switching modes from “BLUES” to “MODERN HIGH GAIN.”
Since all the modes are extremely useful and versatile, they may all be considered as Variable High Gain modes with CLEAN being the obvious lower gain of the four. We encourage experimentation as the names we have given each of the modes refers more to a region of gain than to a stylistic boundary.
Like the Dual Rectifier Solo Head which inspired this incarnation, the amazing sounds of even one of the modes many times left us with the desire to have two of the same channels. This would allow a player to have two of the same modes with just different settings. That way a player could use, say, the ORANGE ( VINTAGE HIGH GAIN ) for a crunch rhythm sound and switch to virtually that same sound with maybe a touch less Treble or a pinch more Gain and a higher Master setting for soloing. Or, maybe one might want to use the CLEAN mode in the ORANGE channel, yet want the Variable High Gain mode in the ORANGE channel as well for a different type of blues solo sound. This type of wish listing the channel configuration eventually led to the concept of Channel Cloning (TM.) Since the switch for this feature is located on the rear panel, we will review it later in the manual under rear panel.
Now that you’ve heard the TREM-O-VERB’S two channels, let’s move on to understanding the controls and their interactive roles in achieving the sounds that you want to hear.
PAGE 2
GAIN: Like most amplifiers, the GAIN Control in each channel determines it’s sensitivity and overall tonal characteristics. It meters the amount of Gain (volume) that your guitar signal will produce. In the T-VERB, we paid special attention to the amount and
frequencies of Gain present in each mode, making sure the whole range of available Gain is musically
CLEAN
usable. We also worked diligently with our suppliers to develop pots with tapers useful to players that require that touch sensitive relationship of input signal level to Gain saturation. An essential ingredient
VINTAGE
GAIN
HIGH GAIN
BLUES
MODERN
HIGH GAIN
INPUTFT.SW
to a great amps expressive nature. To maximize your expression, spend time learning the different regions of Gain in each mode and tonal colors they enhance. Almost more - or certainly equal to the tone controls, the GAIN Control shapes your sound.
HEAD VERSION
TREBLE: As with most guitar amplifiers, the TREBLE Control is the strongest of the three rotary tone controls. Its setting on the TREM-O-VERB determines the blend and strength of the MIDDLE and BASS Controls. Set high, it is the dominant dominant
control, thus minimizing the amount of MID and BASS that would be possible in the mix.
CLEAN
Set low, the TREBLE becomes the recessive control and a warmer, darker blend is pro­duced. Dial with care. Subtle tweaking of this control tends to produce the best results.
VINTAGE
HIGH GAIN
TREBLE
GAIN
BLUES
MODERN
HIGH GAIN
INPUTFT.SW
HEAD VERSION
MIDDLE: The MID Control determines the blend of midrange punch and boldness. It also has a great deal to do with how a sound feels to play. Setting the Midrange low scoops the attack, making the sound and feel more liquid and resilient. Setting the MID higher
CLEAN
VINTAGE
HIGH GAIN
MID
TREBLE
GAIN
BLUES
MODERN
HIGH GAIN
INPUTFT.SW
HEAD VERSION
MID Control set at around to for a tasty blend of smooth dynamic overdrive. Add Treble to focus the attack and fatten with
introduces more punch and authority, helping sounds cut through a mix better. Setting the MIDS very high may make the strings feel a little stiffer and less spongy. Keep this in mind when dialing up your sounds so that you can retain the best feel on the strings, allowing you to always play your best.
In the BLUES mode, the MID Control set low produces a sweet smooth clip and really allows this classic sound to purr. Try the GAIN Control set at around or so and the
the BASS Control. Presence will “Open up” or compress this “beyond vintage” sound that howls with authenticity. This has to be one of the best sounds in the TREM-O-VERB, and was cast early on in the development as it’s quintessential voice, and this mode will let you enjoy lunching on elderly vintage amps.
At high Gain settings in either the VINTAGE ORANGE or MODERN RED modes, the MID Control dials in punch and aggression. For the tightest crunch chording, set the MID Control high, say around - . To make single notes feel juicier and more liquid, reduce the MID Control to around or so. In the MODERN RED mode, using the MID higher and in conjunction with the PRESENCE Control also set high, delivers a down right ugly crunch that’s huge and angry - not fit for the meek! This setting also sounds great and becomes easier to play and more elastic feeling with the GAIN Control set at or higher.
BASS: This control blends in the lower frequencies and its effectiveness, again, depends on the setting of the TREBLE Control. It should be set with moderation as extreme settings in either low or high directions can produce an unbalanced tone. Be “especially”
especially careful in higher Gain settings of either channel. Too much BASS will cause a flabby unfocused sound. Try setting the BASS to for clean sounds in both channels Rhythm modes and or below when dialing up high gain overdriven sounds in these modes. In the LEAD modes, try setting the BASS somewhere between and . These settings will vary with the amount of Gain and Treble you have dialed up.
PAGE 3
MID
BASS
HEAD VERSION
TREBLE
GAIN
CLEAN
VINTAGE
HIGH GAIN
BLUES
MODERN
HIGH GAIN
INPUTFT.SW
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