Quick Start

1. Plug the ST-200 into your signal chain.

2. Optionally connect a 9 Volt external power source. The ST-200 will run for 12 hours continuous on an alkaline battery, enough for about 1,000 tune ups.

3. Stomp on the switch. When the tuner is on, the output is muted. When the tuner is off, the signal is passed straight through with absolutely no load on the signal. It is 100% true bypass.
   

4. Play a note and observe the pattern in the LEDs. The direction of rotation indicates whether the note is sharp or flat. The farther out of tune, the faster the pattern will rotate. When stationary, the note is perfectly in tune.

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Chromatic/Guitar Modes

Chromatic Mode

In chromatic mode, the tuner responds to all 12 notes of the chromatic scale. The note display in the center of the LED ring will show the letter of the note.

Guitar/Bass Modes

In guitar mode, the tuner only selects notes that are defined for the particular tuning. For example, standard guitar tuning has six notes, E4, B3, G3, D3, A2 and E2. The note display in the center of the LED ring will show the string number instead of the note name.

The table below shows the settings pre-programmed into the ST-200. 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. This will be described in a later section.

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Tuning Tips

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.

The single most important tip:

Mute the strings not being tuned by resting your fingers on them. This will eliminate sympathetic vibrations and give a quicker response and a cleaner pattern in the strobe display.

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 does not affect the operation of the tuner. There are several things you can do to reduce the harmonics and get a cleaner looking display:

1. For electric guitars, selecting the pickup closest to the neck will give the clearest pattern. You can also back off the tone control for even greater clarity on the bass strings.

2. Plucking away from the bridge gives a clearer pattern than right next to the bridge. Also, try plucking the string with the side of the thumb rather than a pick.

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Flat Tuning

Flat tuning lowers the pitch of all notes below the regular tuning from one to six semitones. To change the number of flats, hold the FLAT button while turing the tuner on. The Flat LED will flash, and the note display will show the number of flats. Pressing the FLAT button will advance the number of flats. Pressing the CAL key will save the number of flats and return to normal operation.

When the number of flats is anything other than zero, the Flat LED will be illuminated.

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Changing the Reference Pitch

The default reference pitch is A4=440 Hz. This can be changed in .1Hz increments to any value from 300.0 Hz to 599.9 Hz.

To change the reference pitch, press the CAL button while turning the tuner on. The A4 LED will flash, and the current setting of A4 will scroll through the note display.You then press the CAL button to scroll through the current setting, and use the FLAT button to change each digit.

After the desired value has been entered, press the CAL button until the note display is blank, and press the FLAT button. The tuner will now resume normal operation.

Whenever the A4 reference is set to anything other than 440.0 Hz, the A4 LED will be illuminated.

The Clear Key

Holding down both buttons while turning on the power will have the following effect:

• The A4 reference frequency is set to 440Hz.

• Any flats are cleared.

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Editing A Tuning

You may edit the notes of any tuning except Chromatic. A tuning may have up to 9 strings.

This section is under construction. Please check back later.

Please refer to the PDF manual available here ->

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Temperaments

Any of the five modes other than Chromatic may be set as an alternate temperament. When set to a temperament, the tuner will respond to all 12 notes of the chromatic scale, and each note may be offset by up toe ±50.0 cents in .1 cent increments.

This section is under construction. Please check back later.

Please refer to the PDF manual available here ->

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  Specifications