Audio Controls:
1. Magnetic pickup Volume - Nearest the bridge position pickup
2. Magnetic pickup Tone - Below the 3-position magnetic/both/piezo selector
switch
3. Five-Position Pickup Selector Switch.
4. Piezo Volume - Above the 3-position magnetic/both/piezo selector switch
5. 3-position magnetic/both/piezo selector switch - Between the Mag Tone
and Piezo volume
This toggle switch has three positions:
Magnetic Pickups (toward the neck)
Both (middle position)
Piezo Pickups (toward the output jack)
"Smart Switching" output jack
The MIDIFLY is equipped with both FISHMAN® Piezo and DiMarzio® mag-
netic pickups. A special active circuit featuring a "Smart Switching" output
jack, automatically senses whether a stereo or mono jack is inserted. This cir-
cuit makes it possible to mix (or sum) the piezo and magnetic pickup signals,
by automatically sensing the output cable, and play both sounds through a
single amp, or split them to two separate amps or mixers.
1. Mono Guitar Cable
When a standard mono guitar cable is inserted, the guitar's two signals
(magnetic and piezo pickups) are automatically mixed or summed. Both
sounds can be played through a single guitar amplifier or mixer.
2. Stereo Cable
When a stereo guitar cable is inserted, the guitar's two signals (magnetic
and piezo pickups) are automatically split in stereo. The special stereo to
Y cable provided with the guitar allows you to send the two signals to two
separate amplifiers. The Piezo pickup will sound its best through a PA, an
Acoustic Guitar amp, a Keyboard amp, or some other high-fidelity unit.
NOTE: An audio cable must be plugged into the MIDIFly's output jack for the MIDI circuit
to operate.
Piezo Balance Trim Pot
Your guitar is equipped with a Piezo Balance Trim Pot. We set this control at
the factory so that the full volume outputs of the Piezo and magnetic systems
are equal. Since string gauges and pickup height affect the output of the mag-
netic pickups, you may want to change the relative levels of the two systems
by adjusting the Piezo output.
To do this remove the three pickguard screws nearest the controls. Carefully
lift the pickguard and adjust the small,white control located on the
Stereo/Mono switch circuit board with a small screw driver. This "trim pot"
adjusts the output of the Piezo pickup.
Battery
Because the two kinds of pickups have "irreconcilable impedance differ-
ences," their outputs cannot be mixed without the help of an electrically pow-
ered (active) circuit. The 9 volt battery that powers the FISHMAN® Piezo pre-
amplifier has a life of approximately 150 hours. The circuit switches on when
a cable is plugged into the guitar, so to conserve batteries, unplug the cable
when you're not playing your MIDIFLY.
NOTE: The active piezo system supplies the signal to the MidiAxe™ digital MIDI con-
version circuit, so if a battery is low (or dead) MIDI tracking will be degraded or not oper-
ational.
To replace the battery, release the catch and swing open the doors. The flip-
out holder will not close if the battery is installed incorrectly. Please be gentle!
Piezo Frequency Response
Piezo pickups have far greater treble response than magnetic pickups. Some
amps have no trouble with the additional high frequency output, but others
may distort. If this happens, either lower the Piezo volume at the guitar or
amp, or try lowering the treble control of the amp.
Ground Loops
Sometimes when using two amps, there may be a loud hum when the guitar
is plugged into the second amp. This hum is caused by a ground loop. This
ground loop isn't the fault of the guitar (or the amps for that matter), but rather
the result of essential electrical safety code requirements. Ground loops can
occur whenever two pieces of electronic equipment are connected.
NOTE: Do Not Disconnect Or Otherwise Attempt To Defeat Ground Connections On Your
Electrical Equipment !!
There is ONLY ONE safe way to rid yourself of ground loops .....
Use a Direct Box with a ground lift to isolate the two amps. Plug the Magnetic
end of the stereo "Y" mono cable into one amp and the Piezo end into the
Direct Box. Plug the Direct Box's output into a balanced input on the second
amp.
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Audio Controls
