The Casio Midi Guitar Model MG-510
The Casio MG-510 Electric MIDI Guitar
The Casio Midi Electric Hybrid Guitar
Here is an interesting guitar from my collection. Casio made these guitars to try and capture some of the sales of electric guitars, coupled with MIDI, or Musical Instrument Digital Interface functionality built-in.
The MIDI standard was created so that MIDI Keyboards, and later MIDI-modules could be connected toghther, and controlled from a single master keyboard or 'controller'. The controller sent out commands on up to 16-channels, (later 32+ channels and more), in order to create a massive, harmonically rich synthesizer sound that artists like Keith Emerson and Rick Wakeman were producing in the studio and at live concerts and recordings.
MIDi is still in use today, and the feature set has grown to include lighting control for live shows and stage and screen-based theatre productions. The interface is somewhat slow based on today's standards, however the bit rate is sufficient to control some large interconnected instrument configurations and other devices like fire, fog and smoke machines.
The Casio MIDI Guitar instrument appears to be based on the Fender Stratocaster electric guitar, the body shape, and the body-contour on the top-rear are styled after the Stratocaster. The headstock where the string tuning keys are located has a unique design, no doubt to prevent Fender's attorney's from calling and protesting.
The standard electric guitar pickups are as follows: humbucker-style at the bridge, single-coil in the middle, and single-coil at the neck position. The pickup selector switch is a 5-way, meaning that positions 1, 3 and 5 select individual pickups, and positions 2 and 4 select a tapped-pickup that gives a phase-reversed sound much revered in modern music by such notable guitar legends as Eric Clapton, Jeff Beck, Jimi Hendrix, and Stevie Ray Vaughn.
Rounding out the regular electric guitar controls are a master volume and a tone control and another tiny switch mounted between the volume and tone controls for the electric guitar. This is a coil tapping switch for the humbucking-style pickup, providing the thin, chunky sound of a single-coil, phase reversed from the non-coil-tapped pickup sound.There is a whammy-bar bridge attached, and tuning seems pretty good after performing a 'dive-bomb' lowering of the strings tension by pressing the whammy bar towards the pickups.
The similarities to a standard electric guitar end here, and the interesting MIDI implementation will now be discussed. The MIDI interface consists of a special hexaphonic-pickup, mounted between the bridge and the humbucking pickup.
The hexaphonic pickup, along with some sophisticated electronic circuitry, converts the vibrating guitar strings, into 'MIDI-note-values'. These MIDI data streams leave the guitar on a MIDI-cable, a five-pin 'DIN-style" circular shell male connector, and are received by the desired instrument connected to the other end of the MIDI cable.
There are two pole-pieces embedded in the hexaphonic pickup for each string, in a horizontal-pairs configuration. An additional MIDI control panel features a MIDI volume control, and three-each, three-position, bat-handle switches. The switches perform the following tasks. The switch closest to the MIDI volume control, selects electric guitar alone, guitar+MIDI, or MIDI-alone.
You connect an external keyboard, a drum machine ora 'MIDI-instrument-module' to the Casio guitar through a MIDI OUT port on the rear bottom of the guitar body. On this panel also resides an on-off switch, and a dc-in connector for a 'wall-wart' AC to 9-volts DC inverter. Other power options include installing 6-AA 1.5-volt cells inside the guitar body.
The middle switch performs an 'octave-switching' function. leaving the switch in the center position, means you are not shifting the range of the triggered instrument up or down in octaves. Moving the switch in one direction, causes your MIDI instrument to be transposed up one octave (12 notes) from standard. Moving the switch in the opposite direction causes the triggered MIDI instrument to be lowered by one octave.
The last switch controls the scale of the triggered instrument, between NORMAL, CHROMATIC, and PROGRAM CHANGE tasks.
Humbuking Pickup, Single Coil Pickup, Single-coil Pickup and Controls
MIDI Control Panel Detail
Hexaphonic Pickup Detail
Playability and Finish
The guitar is painted fire-engine-red, a color that is one of my personal favorites. This finish is durable, and wipes clean after use with a special guitar polishing rag. The guitar has low action, the neck radius is similar to a Fender Stratorcaster, string bending is easy comparable to the Fender guitar line, and the addition of the MIDI converter makes for interesting surprises while playing. Suddenly you guitar can sound like a flute, a drum, a sound effect or anything you want to setup on the receiving instrument or sampler.
With the switching provided, the guitar signal can be harmonized with any instrument, bird tweet or ? The imagination runs wild, when I use the MIDI guitar to trigger a full jazz or rock drum kit, cymbals, high-hat and all respond well to triggering from the guitar.
One issue if you want minimal latency, or delay in triggering notes in real time from the guitar. You need to replace all of the different string gauges, with one string diameter for all of the strings. In this way the vibrations are converted more quickly into midi note values and transmitted accurately.
Another issue is the cabling. When you have the guitar conncted with the AC power adapter, you have a MIDI cable, a power cable, and a guitar cable all connecting to the rear-bottom edge of the guitar, and this can be a problem if you want to dance around while playing, it becomes a bit of twisted-up spaghetti in that case.
I paid around $300.00 for the guitar including a hard-shell road case and a strap and some picks thrown in by the salesperson. I may be the only person who ever purchased one of these? Not sure how many were manufactured, nor the exact year.
If you know, please leave me a comment below! Respectfully, Nicholas
Rear View of MG-510, battery covers and access to electronics
Headstock Labeling Detail
MIDI Out, 9-Volt DC-Power In, ON-OFF Switch, and Guitar Pickup Out Connectors
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