![]() When there is about an hour of battery life remaining, a low battery warning is shown on the note display every 2 minutes.įlat tuning lowers the pitch of all notes below the regular tuning from one to six semitones. ![]() It also works with any 9 Volt adapter designed for stomp boxes. The Turbo Tuner ST-300 can operate for 12 hours continuous from a standard alkaline battery. The ST-300 can store a total of 5 different temperaments, in addition to the equal temperament. The ST-300 can operate in the equal temperament or any 12 note temperament the user desires. 1Hz, over the range of 300.0 Hz to 599.9 Hz. No battery is necessary.īy default, the tuner uses A4=440Hz as the reference pitch. The ST-300 remembers the settings for mode, drop tuning and A4 changes. The tuner comes with a number of pre-defined tunings for stringed instruments. In this mode the tuner only recognizes notes that are defined for the specified tuning. Permits tuning to any of the 12 notes from C0 to C8, in any temperament. The internal timing generator is calibrated at the factory to maintain a precision of ±.02 cents. It is completely disconnected from all internal circuitry and the tuner puts zero load on the signal. The output of the ST-300 is muted when the tuner is on, and when off the input signal is passed directly to the output. This gives zero latency and instantly shows the slightest tuning error. The ring of LEDs is a true stroboscope, driven directly by the analog input signal and a precision internal frequency reference. Also, try plucking the string with the side of the thumb rather than a pick.Įasy to read display instantly shows the slightest difference in pitch of the note played from the indicated note. Plucking away from the bridge gives a clearer pattern than right next to the bridge. You can also back off the tone control for even greater clarity on the bass strings. There are several things you can do to reduce the harmonics and get a cleaner looking display:įor electric guitars, selecting the pickup closest to the neck will give the clearest pattern. This does not affect the operation of the tuner. The Turbo Tuner's true strobe display responds to all the harmonics of the note as well as the fundamental, and the more harmonics, the more complex the display. This will eliminate sympathetic vibrations and give a quicker response and a cleaner pattern in the strobe display. Mute the strings not being tuned by resting your fingers on them. The Turbo Tuner is designed to respond quickly to the notes from your guitar without resorting to adjusting the volume or plucking the string differently than you normally would when playing. This will be described in a later section. These can be modified for any tuning with up to 9 strings, and can also be set to chromatic mode, with offsets for each note for special tunings. The table below shows the settings pre-programmed into the ST-300. The note display in the center of the LED ring will show the string number instead of the note name. For example, standard guitar tuning has six notes, E4, B3, G3, D3, A2 and E2. In guitar mode, the tuner only selects notes that are defined for the particular tuning. The note display in the center of the LED ring will show the letter of the note. In chromatic mode, the tuner responds to all 12 notes of the chromatic scale. When stationary, the note is perfectly in tune. The farther out of tune, the faster the pattern will rotate. ![]() The direction of rotation indicates whether the note is sharp or flat. Play a note and observe the pattern in the LEDs. When the tuner is off, the signal is passed straight through with absolutely no load on the signal. When the tuner is on, the output is muted. The ST-300 will run for 12 hours continuous on an alkaline battery, enough for about 1,000 tune ups. Optionally connect a 9 Volt external power source. Hold during power up to change number of flats Quick Start Hold during power on to change the A4 reference frequency ![]() Note Display - shows note name in chromatic mode, string number in guitar modeĭrop tuning indicator - can drop up to 6 semitones. Indicates note is more than 50 cents sharp Indicates note is more than 50 cents flat ![]()
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