Read at your own pace. All topics are on this page; illustrations open at full size. Before using the instrument, read the safety instructions and precautions for use.
The Omnichord is an electronic musical instrument with an automatic accompaniment function and is equipped with a harp sensor (strumplate). Your pre-selected chord is electronically matched to the four-octave strumplate so you can strum the correct chord progression for almost any song.
The Omnichord was created in 1981 with the aim of being an electronic instrument similar to an autoharp. Even when the last model bearing the Omnichord name was discontinued, its popularity remained undiminished, and in response to customer demand, Suzuki decided to release the OM-108.
1 Rotate the [Master Volume] knob counterclockwise to set the volume at minimum.
2 Press the [Power] button.
This unit turns on and the power LED lights up.
3 Turn on external devices.
4 Press any of the chord buttons. While sliding your finger on the strumplate, gradually rotate the [Master Volume] knob clockwise to adjust the volume.
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5 Adjust the volume of the external device (such as a powered speaker).
The chord tones of the selected chord (four octaves) will be arranged in the strumplate (⇒).
To play using the strumplate, simply slide or tap your finger on it.
Each note composes of two types of voices (main voice and sub voice). You can create a favorite sound by adjusting the balance of the main and sub voices. For details about main and sub voices, refer to “Explanation of voices” (⇒).
1 Set the controls as shown.
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Knobs and buttons
Setting
[Master Volume]
Center
[STRUMPLATE]
[Sustain]
Maximum
[Main Volume]
3 o'clock
[Sub Volume]
Minimum
[RHYTHM]
[Tempo]
Center
[Volume]
Minimum
[CHORD]
[Volume]
Minimum
[REAL TIME CONTROL]
[Chord Manual/Auto]
Manual
[Chord Hold]
Enabled (LED turned on)
[Rhythm Start/Sync Start]
Sync Start
2 Use the [VOICE] buttons to select a voice.
Press the left button (yellow) to switch between the upper and lower sets, and the five right-hand buttons to select a voice.
(Example: “omni1” is selected)
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(Example: “organ” is selected)
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3 Press any of the chord buttons, then slide or tap the strumplate to play sounds.
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4 Rotate the [STRUMPLATE Sub Volume] knob to adjust the volume of the sub voice.
By increasing the volume of the sub voice, it gradually harmonizes with the main voice, and the sound becomes gorgeous.
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5 Rotate the [STRUMPLATE Sustain] knob to adjust the sustain level of the strumplate voice.
The sustain effect is added to both the main and sub voices together. You cannot adjust them individually.
By combining chord, strumplate, rhythm and REAL TIME CONTROL functions, you can achieve a musical performance with rich expression. This chapter introduces some typical examples.
You can add strumplate play to automatic accompaniment of chords and bass in response to a selected rhythm. This is the most gorgeous play style of this unit.
You can adjust the master tuning frequency (in increments of 1Hz). Adjust this setting when playing with other musicians, instruments or backing tracks.
Affected to
All
Parameter
-6 (434Hz) to 0 (440Hz) to +6 (446Hz)
Factory setting
0 (440Hz)
1 Press the [KEYBOARD (ON)] button to turn on its LED.
2 Press and hold the [P] button (chord button) and press the [↑] or [↓] button.
The current reference tone is generated. The [PATTERN] LEDs show the parameter currently selected.
Examples
Parameter “-4”
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Parameter “0”
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Parameter “+1”
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3 To finish the setting, press the [KEYBOARD (ON)] button to turn off its LED.
MIDI (Musical Instrument Digital Interface) is an internationally recognized communication standard allowing electronic musical instruments and sequencers to communicate with one another, regardless of manufacturers.
The MIDI of this unit transmits control messages such as “Chord button ON (pressed) or Off (released)” and “Strumplate On (touched) or Off (released)”, and parameter values such as volumes, sustain level and tempo.
* “MIDI” is the registered trademark in Japan of the Association of Musical Electronics Industry.
■ What you can do with the MIDI OUT port
By connecting a MIDI device to the MIDI OUT port of this unit, you can transmit MIDI data to the MIDI device.
(Examples of use)
• Perform a song on this unit with a sound generator of a MIDI device (such as a synthesizer or a digital piano).
• Play this unit in synchronization with a MIDI device (such as arranger keyboard and a sequencer).
• Record performance sounds on a sequencer or a PC (DAW).
■ About MIDI channels
MIDI has 16 MIDI channels that transmit various MIDI messages. MIDI devices communicate through MIDI messages via a MIDI cable.
This unit uses five MIDI channels that transmit playing information (such as operations of chord buttons or strumplate).
To transmit MIDI messages as intended, you need to match the MIDI channel settings on a transmitting side (this unit) and a receiving side (MIDI device). For details, refer to “MIDI information” (⇒).
■ About MIDI clock
MIDI clock is a signal transmitted at regular intervals and used for synchronizing the tempo of connected MIDI devices.
This unit transmit MIDI clock signals synchronized with the rhythm tempo. This enables you to play back automatic accompaniment or auto rhythm on the MIDI device (such as an arranger keyboard or drum machine) in accordance with the tempo of this unit.
This message will be transmitted in synchronization with the rhythm tempo of this unit.
Start (FA)
○
×
This message is transmitted when the rhythm starts.
Stop (FC)
○
×
This message is transmitted when the rhythm stops.
○: Yes, ×: No
■ Channel messages
Channel
Note message
Control Change
MIDI transmit preset
Volume (7)
Release (72)
Decay (75)
Preset 1
Preset 2
Preset 3
Preset 4
CH1
Main Voice *1
○ *2
○ *3
○ *3
CH2
Chord
○ *2
×
×
×
CH3
Bass
○ *2
×
×
×
CH4
Sub Voice *1
○ *2
○ *3
○ *3
×
×
CH10
Drum
○ *2
×
×
×
×
×
○: Yes, ×: No
*1: When this unit is in keyboard mode, the “omni 1” voice will be monophonic locally, but MIDI will transmit all note messages according to the keys played.
*2: This message will be transmitted in synchronization with operations of the [STRUMPLATE Volume], [RHYTHM Volume] and [CHORD Volume] knobs when “Volume CC” is set to “On” (⇒). This allows you to adjust the volume balance when performing music. Some MIDI devices may not support this function.
*3: This message will be transmitted in synchronization with operations of the [STRUMPLATE Sustain] knob when “Decay/Release CC” is set to “On” (⇒). Some MIDI devices may not support this function.
About Decay/Release CC
Decay/Release CC
Description
On
The Decay/Release CC value changes in response to [STRTUMPLATE Sustain] knob adjustments.
This is effective when you play sound of an instrument whose sound fades-out, such as a piano or guitar.
Since the gate time depends on touching/releasing the strumplate (or pressing/releasing a chord button in keyboard mode), you can express a finer musical nuance.
Off
You can adjust the time taken for a sound to stop after the sound starts.
This is effective when you play sound of an instrument whose sound does not fade-out such as an organ or string voice.
If the time is set on maximum, the gate time becomes infinite (the state of “note on” continues until you press another key or tap the Instant OFF plate).
For an instrument whose sound fades-out such as piano or guitar, it prevents the sound from abruptly stopping.
■ MIDI transmit preset
This unit uses five MIDI channels to transmit the note messages (control information of the main voice, chords, bass, sub voice and drums).
By selecting a MIDI transmit preset in accordance with your purpose, this unit automatically controls how each note message is transmitted.
Preset 1 (Accomp and Strumplate voice)
• Transmit channels: CH1 to CH3
This preset transmits playing sounds of the strumplate (melody in keyboard mode), chords and bass to a multitimbral MIDI sound generator.
Example:
Play the strumplate, chords and bass while beating out a rhythm pattern of the arranger keyboard in synchronization with MIDI clock of this unit.
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Preset 2 (Accomp and Two Strumplate voices)
• Transmit channels: CH1 to CH4
This preset transmits playing sounds of the strumplate (melody in the keyboard mode), chords and bass to a multitimbral MIDI sound generator.
Since strum sounds are transmitted to both CH1 and CH4, you can assign a different voice to each channel to create various sound effects.
Example:
Play the strumplate (in two different voices), chords and bass while beating out a rhythm pattern of the arranger keyboard in synchronization with MIDI clock of this unit.
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Preset 3 (All Out)
• Transmit channels: CH1 to CH4, CH10
This preset transmits playing sounds of the strumplate (melody in keyboard mode), chords. bass and drums to a multitimbral MIDI sound generator.
For information about drum note messages transmitted by CH10 on this unit, refer to “Drum map” (⇒).
Example:
Apply note messages of this unit without using automatic rhythm/automatic function of an arranger keyboard.
This preset transmits playing sounds of the strumplate (melody in keyboard mode) only.
Select this preset when you want to add a performance of the strumplate to a MIDI sound generator of a single timbre (such as an electronic piano) or music created on DAW.
You can enable/disable the auto power off function. When this function is enabled, this unit will automatically turn off if no buttons or knobs are used for 30 minutes.
Each voice consists of two types of voices (main and sub voices).
The main voice is an instrument which can be selected by pressing the [VOICE] button.
A sub voice has a role that enhances the selected main voice. It is automatically selected according to a selected main voice.
■ Assignments of main and sub voices
VOICE
omni 1
omni 2
harp
celeste
A. piano
Main
Mellow Pulse
Mellow Pulse
Harp
Celeste
A. Piano
Sub
Tremolo Pulse
Synth Strings
Synth Strings
Synth Strings
Synth Strings
VOICE
guitar
FM piano
organ
vibes
banjo
Main
Guitar
FM Piano
Organ
Vibes
Banjo
Sub
Synth Strings (Octave Unison)
Mellow Synth Pad
Synth Strings (Octave Unison)
Synth Strings
Synth Strings
■ Types of main voices
Voice
Description
Sound continuity
Mellow Pulse
This voice reproduces the classic sounds of “OM-84” which is an Omnichord released in the 1980s. To create this voice, the analogue sound generator circuit of “OM-84” is incorporated into “OM-108”.
Harp
This voice reproduces sounds of a pedal harp used in an orchestra. On this unit, make a chord change using the chord buttons instead of pedals.
Celeste
This voice reproduces the soft and subtle sound of a struck idiophone called “Celeste”.
A. Piano
This voice reproduces sounds of an acoustic piano (grand piano) used in orchestra. It is difficult to play fast arpeggio using piano keys but the strumplate allows you to play it easily.
Guitar
This voice reproduces the sound of a guitar with steel strings.
FM Piano
This voice reproduces electronic piano sounds of a digital synthesizer released in 1980s and is suitable for ballad songs.
Organ
This voice reproduces sounds of a Hammond organ, created by a combination of fifth drawbar setting and chorus effect.
○
Vibes
This voice reproduces sounds of a vibraphone (a metallophone equipped with spinning fans at the top of the resonator tubes). We recommend tapping the strumplate with multiple fingers instead of sliding when you use this voice.
Banjo
This voice reproduces sounds of a 5-strings resonator banjo often used in country music. We recommend tapping the strumplate alternately and quickly with multiple fingers instead of sliding when you use this voice.
■ Types of sub voices
Voice
Description
Sound continuity
Tremolo Pulse
As with Mellow Pulse, this voice reproduces the classic tremolo effect sound of “OM-84”.
Synth Strings
This voice reproduces orchestral strings sounds of synthesizer. Compared to the actual sounds, this voice has soft and flat traits so that it harmonizes well with other timbres.
○
Synth Strings (Octave Unison)
This voice reproduces orchestral strings sounds of synthesizer in octave unison which makes the sounds more majestic.
○
Mellow Synth Pad
This voice reproduces mellow synth pad sounds. By mixing with other timbres, you can create a deep atmosphere.
By using the strap buttons “OSB-108” (sold separately), you can attach a commercially available guitar strap to your Omnichord.
Things to prepare
• OSB-108 (set of two strap buttons and two screws)
• PH2 screwdriver
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1 Insert a screw into the center of a button and align the tip of the screw with a strap button hole on the side panel (either left or right) of this unit.
2 Use a PH2 screwdriver to turn the screw clockwise.
Stop tightening the screw if there is no gap between the button and main body.
3 Use the same procedure to install a strap button to the other side of this unit.
Check the strap buttons are firmly secured to this unit before using a guitar strap.
Before using this unit, please make sure you read the following “SAFETY INSTRUCTIONS.”
Always follow the instructions listed below to maintain in safety.
In this manual, the degrees of dangers are classified as follows:
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This sign shows there is a risk of death or severe injury if the corresponding instruction is not properly followed.
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This sign shows there is a risk of injury or material damages (damage to property, people and animals) if the corresponding instruction is not properly followed.
POWER
Use only the correct voltage specified for this unit. The required voltage is printed on the AC adaptor.
Use only the correct AC adaptor for your region. Seek advice from your retailer.
Be sure to use the dedicated AC adaptor.
Do not forcibly twist the power cable or put a heavy object on it.
Doing so can damage the power cable, resulting in electric shocks or a fire.
Do not connect this unit to an AC wall outlet using a multi-plug outlet extender.
Exceeding the power rating (watts/amperes) can cause overheating, resulting in electric shocks or a fire.
INSTALLATION
Do not install or store this unit in locations such as the following.
• Locations where temperature or humidity may become extremely high (e.g. in direct sunlight, near heating devices or in the car).
• In or near wet or damp locations (e.g. bathroom, sink, wet floor).
• Locations exposed to rain, water droplets or steam
• Locations where the instrument may be subject to dust or vibration.
• Unstable places with a risk of falling
Do not place water containers (e.g. flower vase), insect sprays, perfumes, alcohols, nail polish or spray cans on or near this unit.
In case any liquid adheres to the surface of this unit, immediately wipe clean with a soft dry cloth.
HANDLING
Do not disassemble or modify this unit or the AC adaptor.
Do not repair or replace parts of this unit by yourself. No user serviceable parts.
Never do anything not mentioned on this manual. In case this unit needs to be repaired, consult with your retailer.
Do not drop or apply strong impact to this unit.
Do not insert liquids (e.g. water, juice) or foreign objects (e.g. flammable materials, coins, wires) into this unit.
Not suitable for young children.
Handling by children must be done under the monitoring and supervision of an adult.
If batteries leak, do not touch the liquid with your bare hands.
There is severe risk of burns or blindness if the liquid comes into contact with skin or eyes. If this occurs, immediately rinse the affected area with water and seek medical attention.
Do not use this unit for a long period of time at a high volume.
Depending on a combination of this unit and external devices (e.g. amplifier, speaker, headphones), loud sounds may output, resulting in hearing loss. In case you experience any hearing loss or ringing, consult a physician.
Set the volume low before powering on the Omnichord.
To avoid sudden high volume, always start with a lower volume, and gradually increase to a comfortable level.
If any of the following problems occurs, immediately turn off this unit and then remove the AC adaptor from the AC wall outlet.
• The AC adaptor or power cable is damaged.
• Smoke or unusual smell comes from this unit.
• Liquid or foreign object enter the inside of the instrument.
• The unit becomes wet (by rain or other moisture).
• Any failure occurs in this unit.
If you continue to use without solving the problem, it may result in electric shocks, a fire or malfunction. Consult with your retailer, a near SUZUKI dealer or an authorized SUZUKI distributor.
POWER
When connecting or disconnecting the AC adaptor, hold the plug instead of the cable.
Pulling the cable can damage the plug, socket or cable.
If not using this unit for a long period of time, remove the AC adaptor from the AC wall outlet.
When there is a risk of lightning, remove the AC adaptor from the AC wall outlet.
Clean the AC adaptor and plug parts regularly.
The plug covered in dust can cause poor insulation, resulting in a fire.
Do not handle the AC adopter or power cable with wet hands.
BATTERIES
Use of alkaline batteries is recommended.
Manganese dry cell batteries and rechargeable batteries may not work correctly.
Use the same type of batteries.
Do not mix batteries from different brands or manufacturers.
When replacing batteries, replace them all at the same time.
Observe the recommended battery expiry date.
Even if expired batteries have never been used, they may not work correctly.
Observe battery polarity.
If a battery is inserted the wrong way, there is a risk of heat generation, liquid leakage, or explosion.
Insert the battery negative side first and remove from the positive side.
Make sure to press the negative contact correctly against the spring when inserting it, as there is a risk of damage to the product, overheating of the battery, explosion, smoke, or fire.
Keep battery terminals clean.
If the battery terminals are dirty, the battery may not be able to perform to its full potential, affecting operation. Please remove dirt with a dry cloth before use.
Always remove batteries from the instrument when it will not be used for an extended period.
Dispose of used batteries responsibly, and in accordance with local recycling rules.
INSTALLATION
Install this unit and the AC adaptor in a well-ventilated location.
Do not rest your weight or place heavy objects on this unit.
Prevent complicated wiring of cords and cables. Also be sure to keep them out of the reach of small children.
Before moving this unit, turn off the power and then remove all cables (e.g. AC adaptor, external devices).
HANDLING
Before cleaning this unit, turn off the power and remove the AC adaptor from the AC wall outlet.
In the unlikely event that you need to dispose of this unit, be sure to contact your dealer or your nearest town or municipal office for its proper disposal.
• Turn off the power of all devices before connecting external devices to prevent malfunction or damage to the devices.
• Do not connect any equipment that generates noise (e.g. refrigerator, washing machine, microwave, air conditioner) on the same power line as this unit to prevent noise generation or malfunction of this unit. If a different power line is not available, use a noise filter for the power line.
INSTALLATION
• This unit may interfere with TV, radio or wireless devices (e.g. cellular phone), or a device with a large transformer (e.g. power amplifier). If interference occurs, change the position or orientation of the corresponding device, or turn off if not in use.
• To prevent damage or malfunction, turn off the power of any external devices before connecting to the Omnichord.
HANDLING
• Do not apply excessive force, or damage any parts of the product.
• When cleaning the unit, use a soft dry cloth or a wet cloth wrung out tightly.
To remove stubborn dirt on the plastic parts, wipe clean using a cloth with neutral detergent and then a soft dry cloth. Using benzine, paint thinners or alcohol can cause deformation or discoloration.
Suzuki maintains a policy of continuously improving and upgrading its instruments and therefore reserves the right to change specifications without notice. Although every attempt has been made to insure the accuracy of the descriptive contents of this Manual, total accuracy cannot be guaranteed.
Should the owner require further assistance, inquiries should first be made to your Authorized Suzuki Dealer. If you still need further assistance, contact Suzuki at the following addresses:
Prefer the printed pages?
The original 60-page PDF is still available, with an Omnichord Heaven link on every page. The previous page-image reader is also preserved.