Mesa/Boogie Vacuum Tube Audio owner manual Detachable Power Cord, A.C. on / OFF Switch

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A.C. MAINS
POWER
OFF
POWER
ON

3-4 HOOK-UP OPTIONS: ( Continued )

control instead. This avoids running the load resistor of the headphone circuit unnecessarily hot. To mute the speakers in the second- ary room while the main room remains active, either turn off the secondary amplifier or turn the Level Set to zero. We recommend turning off the second amp so that your favorite inter-room level balance stays put by leaving the Level Set at the predetermined setting.

Please note that this is merely a basic multi room scenario - you won’t be able to play back two different musical programs simultaneously.

3-5 DETACHABLE POWER CORD:

You may be surprised to note that the power cord of the TIGRIS unplugs from the main chassis. This allows you to experiment with after market power cords which can result in surprising differences. It also makes for easier installations. Make sure the A.C. switch is in its off position before you plug in the A.C. power cord. If all the component connections have now been made, you should connect the TIGRIS to your electrical wall outlet, power strip or line conditioner. Check that your line conditioner is not a current-limiting device.

3-6 A.C. ON / OFF SWITCH:

Above the Front Panel, you’ll find the primary ON / OFF toggle switch in the left-most position. Upon power-on, the LEDs will light up to confirm status - dim in WARM mode, bright in OPERATE mode.

The TIGRIS should be fully powered down and unplugged during severe thunder storms that might cause power failure and line surges, as well as during vacation periods. With the TIGRIS connected to your power source, you should now turn on the A.C. Switch. The front-mounted push button switches

should still be in the WARM position.

3-7 WARM / OPERATE SWITCHES:

The TIGRIS allows instantaneous start-up by switching from WARM to OPERATE. Think of the WARM feature as an idle current that operates the tubes in standby at highly reduced Hv. This is similar to an advanced rheostat that keeps halogen bulbs under current even when the lights are extinguished, thus extending the bulbs’ life span. The status LEDs will turn from dim to bright whenever operate is engaged, and will fully extinguish only when the A.C. ON / OFF switch is turned off.

WARM

OPERATE

Whenever you have to change and disconnect interconnects, turn the TIGRIS off. There is enough Hv in the WARM position to reproduce signal at much reduced output level - this could cause minor feedback noise to your speakers if you unplugged interconnect cables in WARM mode.If you listen a lot, leaving the tube circuitry in the WARM mode actually extends the life of the active components because the sudden turn-on / turn-off power fluctuations are avoided. The load on your electric bill is negligible, and you won’t have to wait for the tubes to warm up! *

If, on the other hand, you listen rarely, turn on/turn off wear is not an issue, so you should power down the amplifier after each listening session. Like its pro-music brethren, we designed the TIGRIS ex- pecting a certain amount of unintentional abuse, so you won’t have to concern yourself with handling your new amplifier with velvet gloves.

*During summer months, you may want to shut down the amplifier when you don’t listen to it - especially in smaller rooms, this will ease the burden on your air conditioner. If your system is fully hooked-up now, the A.C. Power ON and the Standby switches in the WARM position, you are about to begin your first listening session. One final step remains - setting the grounding switch appropriately.

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Contents Vacuum Tube Audio Page Table of Contents Chapters USE Common Sense and Always Observe These Precautions PrecautionsOverview Operating InstructionsFront View Tigris Speaker Binding Posts InstallationUnpacking LocationHOOK-UP Options Speaker Binding PostsHOOK-UP Options HOOK-UP Options Warm / Operate Switches Detachable Power CordA.C. on / OFF Switch Congratulations Ground SwitchTandem State Imaging Advanced FeaturesAbout BREAK-IN CongratulationsTandem State Imaging Headphone Output Power Tube BlendAuto Bias Headphone OutputClass a Operation Cathode resistorClass a Operation On TRIODES, Pentodes & IrishmenOn TRIODES, Pentodes & Irishmen Triodes Pentodes Tube Maintenance & Tube RollingTube Maintenance Tube Rolling Tube MaintenanceEvolution of the Tigris Evolution of the Tigris Mesa/Boogie Professional Heritage Customer ServiceSpecs Versus Performance Trouble ShootingSpecs Versus Performance Basic Specs14 2 Outside the US Warranty14 1 Within the US Warranty Registration Form From Mesa Boogie Spirit of Art in Technology

Vacuum Tube Audio specifications

Mesa/Boogie is a revered name in the world of vacuum tube audio, renowned for its high-quality amplifiers that have shaped the sound of modern music. Founded in 1969 by Randy Smith in California, Mesa/Boogie began by transforming Fender amplifiers into customized, high-gain models, ultimately gaining a reputation for producing powerful, versatile, and low-noise amplifiers. The signature sound of Mesa/Boogie is characterized by a complex harmonic richness, warmth, and clarity that resonates with guitarists and audiophiles alike.

One of the standout features of Mesa/Boogie amplifiers is their all-tube design. Utilizing vacuum tubes as the primary amplification source, these amps deliver a dynamic range and tonal complexity that solid-state amplifiers struggle to match. The quality of the tubes used, often hand-picked or specifically designed by Mesa, contributes to the unique audio characteristics of each model. The use of EL34, 6L6, and 12AX7 tubes in various configurations allows for a range of tonal options, from lush cleans to searing leads.

Mesa/Boogie amplifiers are also distinguished by their innovative technologies. The brand pioneered the dual rectifier system, which allows players to switch between tube and solid-state rectification. This feature gives musicians the ability to tailor their sound to preference, enhancing the responsiveness and feel of the amplifier. The Contour controls found on many models further exemplify Mesa’s commitment to versatility, allowing for fine-tuning of EQ settings that adapt to different musical styles.

Another hallmark of Mesa/Boogie designs is their attention to build quality. Each amplifier is crafted with robust materials, ensuring durability and reliability even in demanding performance environments. The custom cabinets and speaker selections are optimized to complement the amplified tone, providing a cohesive sound that resonates in live settings.

Mesa/Boogie’s reputation is enhanced by their extensive lineup, including the Mark series, the Rectifier series, and the Lone Star series. Each line caters to different playing preferences and styles, from jazz to metal. The versatility of these amplifiers makes them suitable for diverse genres, allowing musicians to explore their sonic identities.

In conclusion, Mesa/Boogie remains a leading force in vacuum tube audio, combining traditional craftsmanship with cutting-edge technology. Their dedication to quality, innovation, and tonal versatility ensures that they remain a favorite among guitarists seeking the ultimate sound experience. Whether in the studio or on stage, Mesa/Boogie amplifiers continue to inspire musicians to push the boundaries of creativity.
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