Mesa/Boogie Vacuum Tube Audio owner manual Power Tube Blend, Headphone Output

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5 - 1 TANDEM STATE IMAGING: ( Continued )

The feedback settings of the TIGRIS correspond with the following approximate values ( your actual speaker load and the output tab chosen will affect the values slightly ):

 

Full Pentode

2/3 Pentode

2/3 Triode

 

 

 

 

Stage 1

5dB

4dB

3dB

Stage II

8dB

7dB

5dB

Stage III

12dB

10dB

8dB

 

 

 

 

Higher amounts of feedback affect driver control in speakers by increasing the amplifier’s damping factor and reducing speaker motion. Damping factor refers to the impedance relationship of source impedance (TIGRIS ) to load impedance ( speaker ). The lower the source impedance, the higher the damping factor. Increased feedback lowers the amplifiers’s output impedance. If your speakers feature main drivers larger than 8 inches, you may notice tighter, more articulate bass performance by selecting one of the higher Feedback settings.The highest amount of feedback in the TIGRIS is well below the industry standard in amplifier design, and the TIGRIS was designed to operate flawlessly without any feedback whatsoever - the Zero setting. User-adjustable Negative Feedback is thus implemented merely as a fine-tuning and system-matching device.

To correctly evaluate the appropriate amount of feedback for your system, remember to adjust the Volume control during comparative listening sessions with various feedback settings. You need to offset reduced output with increased feedback by slightly raising playback levels.

A quick counting survey of the features of Tandem-State Imaging will add to twelve (12) different possible combinations between Pentode / Triode operation and Negative Feedback. Before this figure begins to look alarmingly complex, take a slow breath: after a get-to-know period of a week or two, most owners settle for one very obvious setting as the best-sounding for their system. From our BARON’S returned warranty cards we have learned that one person’s favorite setting is another one’s least used, thus proving the value of such flexibility. We also have reports on file where, due to a move, redecoration or system upgrade, the favorite setting changed. Tandem-State Imaging thus also becomes an insurance policy against obsolescene. This feature is so easy to operate - a flick of a switch, a turn of a knob is all it takes. All adjustments were designed to be operational on-the-go, under signal and during the performance where changes would be immediately perceivable.

5 - 2 POWER TUBE BLEND:

Returning briefly to the power tubes of the TIGRIS, you will notice that here, too, the principle of cross-breeding is in operation: two different kinds of tubes are employed, in a predetermined, optimal 2:1 ratio. The EL84 tube is known for its dynamic prowess and a lively, bubbly presentation filled with air and extension. The 6V6, on the other hand, excels with its warmth and prodigious bass. Combined, the presentation features the sum total of these ingredients: full-range frequency extension, dynamics, warmth, airiness and liveliness.

5 - 3 HEADPHONE OUTPUT:

An unusual feature of the Headphone Output of the TIGRIS is its linkage to the full array of power tubes, which provide access to complete Tandem-State Imaging and true Class A output power. Unlike other designs where an op-amp or the preamp stage drive the headphones, the TIGRIS, via a load resistor, connects the headphones directly to the speaker outputs. Whenever the Headphone switch on the Rear Bay is set to speaker mute, the entire TIGRIS literally converts into a dedicated headphone amplifier of reference caliber. Our ultra-low noise output stage was especially optimized to cater to high-resolution Headphones that would reveal back- ground noise in a lesser design. If you initially experience uncertainty about the exact impact the various settings of Tandem-State Imaging exhibit over your speakers, we recommend you take an educational tour via a pair of good-quality Headphones. Because you side step room interactions, the effects will be very pronounced and easily recognizable. With a little experience, you will then know

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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 Detachable Power Cord A.C. on / OFF SwitchWarm / Operate Switches 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 Tube Maintenance & Tube Rolling Tube MaintenancePentodes Tube Maintenance Evolution of the TigrisTube Rolling Evolution of the Tigris Mesa/Boogie Professional Heritage Customer ServiceSpecs Versus Performance Trouble ShootingSpecs Versus Performance Basic SpecsWarranty 14 1 Within the US14 2 Outside 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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