Boss TU-12EX Owner’s Manual

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Year 2008

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Boss TU-12EX Specification

The Boss TU-12EX is a refined chromatic tuner designed for musicians seeking precise tuning capabilities and user-friendly features. It builds upon the legacy of its predecessors, offering enhanced accuracy and reliability. The TU-12EX features a needle-type meter that provides clear and immediate visual feedback, aiding in precise tuning with a detection range suitable for a wide variety of instruments, from guitars to brass and woodwinds. Its tuning range spans from C0 (16.35 Hz) to C8 (4186 Hz), ensuring comprehensive coverage for most musical applications.

This tuner incorporates both a built-in microphone and an input jack, allowing for versatile connectivity whether you're tuning acoustic instruments or electric ones. The reference pitch can be adjusted from 438 Hz to 445 Hz, offering flexibility for different tuning standards and preferences. The TU-12EX is powered by two AAA batteries, providing portability and extended usage. An auto power-off function conserves battery life, automatically shutting down the unit after a period of inactivity.

The design of the TU-12EX is compact and robust, making it suitable for both stage and studio environments. Its durable construction ensures longevity, while the intuitive interface allows for easy operation even under low-light conditions. Additionally, the tuner includes a flat tuning mode, accommodating players who prefer alternate tunings. With its combination of precision, ease of use, and versatile application, the Boss TU-12EX remains a valuable tool for musicians seeking reliable tuning solutions in a compact format.

Boss TU-12EX F.A.Q.

How do I calibrate the Boss TU-12EX for accurate tuning?

To calibrate the Boss TU-12EX, use the calibration function to adjust the reference pitch. Press the 'CALIB' button to select the desired reference pitch, typically set to 440Hz for standard tuning.

What should I do if the needle does not move while tuning?

Ensure that the instrument is properly connected and producing sound. Check the input jack and battery status. Try replacing the battery if it is weak or dead.

Can the Boss TU-12EX be used to tune down a half step?

Yes, the Boss TU-12EX can tune down a half step. Use the flat tuning feature by pressing the 'FLAT' button to adjust the pitch range downwards.

How do I change the reference pitch on the TU-12EX?

Press the 'CALIB' button repeatedly until the desired reference pitch is displayed. The default is 440Hz, but it can be adjusted between 438Hz and 445Hz.

What is the function of the 'Flat' button on the TU-12EX?

The 'Flat' button allows you to tune your instrument to a lower pitch by semitone increments. Each press lowers the reference pitch by one semitone, up to a maximum of five semitones.

How can I check the battery level on my tuner?

The Boss TU-12EX does not have a battery level indicator. However, if the tuner is not responding or the display is dim, it might be time to replace the battery.

What should I do if the display is flickering or dim?

Check the battery and replace it if necessary. Ensure the battery is properly seated in the compartment.

How do I perform a factory reset on the TU-12EX?

The Boss TU-12EX does not have a factory reset feature. To reset settings, you need to manually adjust each function (such as calibration and flat tuning) back to default.

Is it possible to use the TU-12EX for tuning non-standard instruments?

Yes, the TU-12EX can be used for non-standard instruments as long as you adjust the reference pitch and flat tuning settings according to the instrument's requirements.

How do I maintain the TU-12EX for long-term use?

Keep the tuner clean and free from dust. Store it in a dry place and remove the battery when not in use for extended periods to prevent leakage.