Searchable digital working edition

OM-150
& OM-250m

Reflowable text for reading and search, with the original pages, joined controls spread, diagrams and alignment-sensitive music retained as images.

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Original OM-150 and OM-250m operation-manual cover.
Original 1

Both models

Introduction

Enter the 90s with the all new Omnichords!

The all new Omnichords (models OM-150 and OM-250m) by Suzuki make it possible for you to sound like a pro, even if you've never played before. These electronic digital musicomputers provide you with the ultimate combination of musical instruments in a lightweight, portable and dynamic sounding package never before available.

Omnichords can even be strummed like a guitar to add depth and expression to your music with the amazing SonicStrings Strumplate. Your pre-selected chord is electronically matched to the 4-octave strumplate so you can actually strum any song's correct chord progression - just like a guitar! All of Omnichord's functions can be used individually or in exciting combinations. There's no end to the music you can make!

The advanced microtechnology of the OM-250m allows you to program all the background chords, rhythms, bass and drums to your favorite songs without knowing one note from another. As the background is played back automatically, you can add the melody line. The MIDI feature allows the musician to expand the OM-250m's capability by connecting it to a computer, synthesizer or other MIDI device for performance and recording applications.

This operation manual contains easy-to-follow, step-by-step explanations of the Omnichord functions. Read the manual carefully to fully utilize the potential of these instruments.

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Both models

Contents

This manual refers to both models: OM-150 and OM-250m

  1. Introduction
  2. Table of Contents
  3. Control Positions & Functions
  4. Control Positions & Functions
  5. Set-Up
  6. Demo & Precautions
  7. One Finger Chord Play
  8. Multi-Finger Chord Play
  9. SonicStrings Set-Up & Play
  10. SonicStrings Playing Techniques
  11. Combination Play, Adding the Bass Line
  12. Drums & Drum Introductions
  13. Demonstration Song - Beginning Level
  14. Chord Memory - Programming the Memory (OM-250m only)
  15. Chord Memory - Playback (OM-250m only)
  16. Fixing Memory Errors (OM-250m only)
  17. Melody Keyboard - Intermediate Level (OM-250m only)
  18. Demonstration Song - Intermediate Level (OM-250m only)
  19. Melody Keyboard - Advanced Level (OM-250m only)
  20. Demonstration Song - Advanced Level (OM-250m only)
  21. Additional Features (OM-250m only)
  22. Additional Features continued (OM-250m only)
  23. MIDI Interface (OM-250m only)
  24. Notes
  25. Order Form
  26. Accessories
  27. Specifications & Warranty - rear cover
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Control Positions & Functions

Controls 1-20

Masters

  1. VOLUME - Master control
  2. POWER - Main on/off switch

SonicStrings

  1. TOUCH PLATE
  2. OCTAVE INDICATORS - 4-octave chord sequencer
  3. SPEAKER
  4. INSTANT OFF - Touch anytime to stop all sound

Voices

  1. VOICE VOLUME
  2. VOICE SUSTAIN
  3. DEMO
  4. VOICE SELECTOR SHIFT
  5. VOICE SELECTORS

Rhythms

  1. DRUM START
  2. RHYTHM TEMPO
  3. RHYTHM VOLUME
  4. RHYTHM SELECTOR SHIFT
  5. RHYTHM SELECTORS

Chord Mode

  1. CHORD PLUS / AUTO CHORD
  2. MANUAL CHORD
  3. CHORD VOLUME
  4. CHORD BUTTONS
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Both models; controls 23 and 27-39 are OM-250m only

Control Positions & Functions

Controls 21-39

Side View

  1. 1/4-inch OUTPUT / HEADPHONE JACK
  2. 12V DC INPUT JACK - Optional A/C adapter jack

OM-250m Footswitch

  1. FOOTSWITCH JACK - Optional chord-memory switch

Bottom View

  1. TUNING CONTROL
  2. SERIAL NUMBER PLATE
  3. BATTERY DOOR

OM-250m Chord Memory and Melody

  1. RECORD/PLAYBACK - Mode setting
  2. DELETE/REPEAT - Recorded song plays again / backspace for correction
  3. MELODY KEYBOARD ON/OFF
  4. ENTER/PLAYBACK - One-finger chord play / enter chords to memory; Drum Fill when memory is off
  5. OCTAVE UP / OCTAVE DOWN - Melody keyboard
  6. INTRO/END BUTTONS
  7. TRANSPOSE BUTTONS
  8. SKIP BUTTONS
  9. CLEAR MEMORY BUTTONS
  10. MIDI OUTPUT JACK
  11. MELODY KEYBOARD
  12. MELODY KEYBOARD OVERLAY
  13. DRUM FILL - Memory on only
Joined original scans of printed pages 3 and 4, showing the complete OM-150/OM-250m control-position spread as one continuous image.
Original joined control-position spread (printed pages 3-4). Select the image to open it full size.
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Both models

Set-Up

Battery installation

After removing the instrument, batteries and instruction manual from the packing carton and shipping materials, store the box and shipping material for later use. They make an ideal container if it becomes necessary to transport the instrument.

Your Omnichord comes complete with eight batteries (size C, SUM-2 or R-14) and is ready to use without assembly. Follow these instructions to load the batteries correctly:

  1. Turn the Omnichord over. Pull back on the two plastic tabs and remove the battery door.
  2. Insert the eight batteries using the diagram on the instrument's battery door, then close the door. If there is no power, re-check the battery orientation and replace the battery door.
  3. The battery diagram shown in the illustration is the same as the diagram on the battery door.
Battery-door removal and eight-battery installation.
Battery-door removal and eight-battery installation.
Eight-cell battery polarity diagram.
Eight-cell battery polarity diagram.
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Demo & Precautions

Dos and don'ts to make your Omnichord last a lifetime

The Omnichord has a built-in demo feature to introduce its rhythms, strum and melody voices. Turn the instrument on and press the DEMO button (#9).

During the demo you may strum the Strumplate, adjust master volume, switch Chord-Plus on or off and, on the OM-250m, use Drum Fill. All other controls are disabled during demo play.

Omnichords use a digital microprocessor to translate commands into music. The solid-state electronics are protected by an ABS plastic case. With reasonable care, the instrument should provide years of dependable operation.

Avoid Direct Heat

Never leave your instrument near extreme heat or in direct sunlight. Keep it away from radiators, heaters and the back-window ledge of a car.

Keep Your Omnichord Dry

Do not use your Omnichord near moisture or place liquids on or near the instrument. Liquid spilled inside will require extensive repairs.

Don't Use Solvents or Abrasives

Clean the cabinet, buttons and touchplate with a soft, damp cloth. Do not use benzine, solvents or abrasive cleaners; they will permanently damage the finish.

Protect the Power Source

Turn the Omnichord off when it is not in use. This prolongs battery life and reduces wear on the electronic components.

Long Storage

For storage of 30 days or more, remove the batteries to prevent leakage and subsequent electronic damage.

Use Only Suzuki Power Adapters

Operate the Omnichord from batteries or the optional OCA-7 A/C adapter. Do not connect it directly to a 12-volt source such as a car cigarette lighter; use the optional OCD-7 adapter for 12-volt operation.

Don't Disassemble Your Omnichord

To avoid shock, never open the instrument. If service is needed, contact an authorized musical-instrument dealer. Opening the instrument will also void the warranty.

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Both models

One Finger Chord Play

Major, minor and seventh chords

The Omnichord is capable of playing up to 84 chord combinations using the 36 softouch chord buttons. This section explains simple one-finger play: major, minor or seventh chords in any key. The manual pictures the OM-250m, but the OM-150 functions identically for these instructions. Features unique to the OM-250m begin on page 14.

Begin by turning all rotary control knobs fully counter-clockwise, then set up the instrument as follows:

  1. POWER BUTTON - Press POWER to turn on the Omnichord. The red indicator lights show the active functions.
  2. MASTER VOLUME - Set the master volume to about 12 o'clock or as desired.
  3. CHORD VOLUME - Set the volume in the Chord Mode section to about 3 o'clock or as desired.
  4. RHYTHM VOLUME - Off. Press MANUAL CHORD in the Chord Mode section so its indicator lights.
  5. PUSH A CHORD BUTTON - With your left hand, press any of the 36 softouch chord buttons. To accompany a song, read its chord symbols and press the corresponding Omnichord buttons as the music continues.
  6. INSTANT OFF - Touch INSTANT OFF to stop the chord sound during a pause or at the end of a song. Press any chord button to reactivate the sound.
The Instant Off touch point used to stop all sound.
The Instant Off touch point used to stop all sound.
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Multi-Finger Chord Play

Major seventh, minor seventh, augmented and diminished chords

The chord section can play more complex progressions by pressing two or three chord buttons simultaneously. Keep the control settings described on the previous page.

  1. MAJOR 7TH CHORD - Select a key (Db, Ab, Eb, Bb, F, C, G, D, A, E, B or F#). Press the MAJOR and 7th buttons together (top and bottom rows). The illustration shows Bb major seventh.
  2. MINOR 7TH CHORD - Select a key. Press the MINOR and 7th buttons together (middle and bottom rows). The illustration shows F# minor seventh.
  3. AUGMENTED CHORD - Select a key. Press the MAJOR, MINOR and 7th buttons together (top, middle and bottom rows). The illustration shows A augmented.
  4. DIMINISHED CHORD - Select a key. Press the MAJOR and MINOR buttons together (top and middle rows). The illustration shows G diminished.
Four chord-button diagrams for Bb major seventh, F-sharp minor seventh, A augmented and G diminished.
Four chord-button diagrams for Bb major seventh, F-sharp minor seventh, A augmented and G diminished.
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SonicStrings Strumplate Set-Up & Play

Guitar-style strumming and voice effects

The SonicStrings Strumplate responds instantly to the touch of your fingers and lets you strum four octaves of the pre-selected chord in perfect pitch.

Set the controls as described in One Finger Chord Play, then follow these steps:

  1. CHORD VOLUME - Turn the Chord Mode volume fully counter-clockwise (off).
  2. RHYTHM VOLUME - Turn the Rhythm Section volume fully counter-clockwise (off).
  3. VOICE VOLUME - Set the Voice Section volume to 3 o'clock or as desired.
  4. VOICE SELECT - Select any of the ten voices in the Voice Section.
  5. VOICE SUSTAIN - Set the Voice Section sustain to 3 o'clock or as desired.
  6. Press any chord button with your left hand, then gently strum from bottom to top with your right finger or thumb.

SonicStrings Voices

The Omnichord offers ten SonicStrings voices. Names are printed beside the selector buttons. The LED indicators beside VOICE SELECTOR SHIFT (#10) show which voice bank is active. Press the shift button to change banks, then press a chord and strum to hear each voice.

Hands selecting a chord and strumming the SonicStrings Strumplate, with the original safety callout.
Hands selecting a chord and strumming the SonicStrings Strumplate, with the original safety callout.
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Both models

SonicStrings Playing Techniques

Slide play and touch play

The SonicStrings Strumplate automatically plays the chord selected on the chord buttons. There is no single correct strumming method; use the technique that sounds best for each song.

Slide Play

Set sustain in the Voice Section to 3 o'clock and press a chord. Run a finger or thumb from the bottom of the strumplate to the top. Try two fingers, then three; covering more surface produces a fuller chord. You can also strum from top to bottom.

Touch Play

Using the fingertip, pat four to six places starting at the bottom. Try two, three or four fingers to hear the individual chord octaves. Change voices and sustain settings for different sounds.

Thumb, two-finger and split-finger SonicStrings slide techniques.
Thumb, two-finger and split-finger SonicStrings slide techniques.
One-, three- and two-finger SonicStrings touch-play techniques.
One-, three- and two-finger SonicStrings touch-play techniques.
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Both models

Combination Play & Walking Bass Line

Combining chord, SonicStrings and bass sections

Combine Chord and SonicStrings Sections

Set the Chord Section volume to about 3 o'clock. Press MANUAL CHORD, select any chord button and strum the SonicStrings Strumplate.

Remember

The chord and SonicStrings sections have separate volume controls, and SonicStrings has a sustain control. Adjust each section independently.

Add the Walking Bass Line

  1. Select one of the ten rhythms and press its button.
  2. Turn on AUTO CHORD in the Chord Mode section. Its indicator should be lit; this function is engaged automatically when the Omnichord is switched on.
  3. Press a chord button. Auto chord and the walking bass line are added automatically. Try different rhythms and adjust TEMPO; strum in time with the walking-bass beat.
Hands selecting a chord and strumming for combination play.
Hands selecting a chord and strumming for combination play.
Original walking-bass player illustration.
Original walking-bass player illustration.
Hands selecting rhythm and auto bass, then strumming the SonicStrings.
Hands selecting rhythm and auto bass, then strumming the SonicStrings.
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Both models

Drums & Drum Introductions

Using the Rhythm Section

To add drums to the chord, SonicStrings and bass patterns, turn the Rhythm Section volume clockwise. Press any chord button to play the completed accompaniment and add SonicStrings by strumming.

Fade-In Chord & Bass

Turn the Chord Mode volume off, press the selected chord so the drum introduction sounds, then turn the chord volume clockwise to fade in the chords and walking bass.

Instant Chord & Bass Addition

Preset the rhythm, tempo, voicing and volumes. Press SYNC START for a drums-only introduction, then press the first chord button to begin chord and bass accompaniment.

Chords & Drum

Set AUTO BASS to manual chord (indicator off), then press a chord button. Only the selected chord and drums will sound; the SonicStrings remains active. Press AUTO BASS again to add the walking bass.

Chord-Plus

Press the green CHORD-PLUS button in the Chord Mode section to enhance the accompaniment. Each press alternates between standard Auto Chord and Chord-Plus. Use the contrast to distinguish a song's main body from its bridge without changing rhythm.

Original drummer illustration from the Rhythm Section page.
Original drummer illustration from the Rhythm Section page.
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Both models; this completes the OM-150 instructions

Demonstration Song - Beginning Level

When the Saints Go Marching In

Set up the Omnichord as follows:

  1. Press POWER in the Masters section.
  2. Set Masters VOLUME to 3 o'clock.
  3. Set Voice VOLUME to 12 o'clock.
  4. Set Voice SUSTAIN to 3 o'clock.
  5. Set Chord Mode VOLUME to 3 o'clock.
  6. Press MARCH in the Rhythm section.
  7. Set Rhythm TEMPO to about 8 o'clock, then increase the speed after practising.
  8. Set Rhythm VOLUME to 12 o'clock.

How to Begin

The first chord is C. Press C in the major/top row. A chord letter without any further designation means a major chord. Change chords and strum each time a new chord symbol appears; press INSTANT OFF when the song ends.

When the Saints Go Marching In

The original top-line chord-and-lyric layout is retained as an image so the chord changes remain aligned with the words.

Original top-line chord and lyric layout for When the Saints Go Marching In.
Original top-line chord and lyric layout for When the Saints Go Marching In.
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OM-250m only

OM-250m Chord Memory

Memory programming

The programmable chord memory can store a song's chords for one-finger playback. During playback, chord changes require only the ENTER/PLAYBACK button, leaving the player free to concentrate on the SonicStrings.

  1. Press RECORD/PLAYBACK in the Chord Memory section.
  2. MEMORY CLEAR - Press the three CLEAR MEMORY buttons (#35) simultaneously. This removes all stored chords.
  3. Set Voice volume to 12 o'clock.
  4. Read the chord symbols of the selected song and press the corresponding chord button.
  5. Press ENTER/PLAYBACK. A beep sounds, the chord stops and the chord is stored. Continue until the song is complete.

Memory Loss

  1. Stored songs remain in memory while the A/C adapter remains connected to a powered wall socket, or while the instrument has battery power.
  2. Memory is lost if the adapter is disconnected without batteries installed, or if the batteries are removed.
Chord-memory record/playback and three-button memory-clear controls.
Chord-memory record/playback and three-button memory-clear controls.
Hands selecting a chord from sheet music and entering it into memory.
Hands selecting a chord from sheet music and entering it into memory.
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OM-250m only

Chord Memory Playback

Playing back recorded chord sequences

  1. Press RECORD/PLAYBACK so the PLAYBACK indicator is lit.
  2. Press ENTER/PLAYBACK; the first stored chord plays automatically.
  3. Choose the rhythm, tempo and accompaniment levels for the song, then press DELETE/REPEAT to return to the beginning.
  4. Begin the song and press ENTER/PLAYBACK for each chord cue. Each press advances to the next stored chord.
  5. At the end, the drum pattern continues until INSTANT OFF is touched. To fade the ending, turn the Rhythm Section volume down.
  6. To repeat the song, press DELETE/REPEAT, wait for the beep, then press ENTER/PLAYBACK.
Original sequence of record/playback, accompaniment, repeat, fade and instant-off controls.
Original sequence of record/playback, accompaniment, repeat, fade and instant-off controls.
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OM-250m only

Fixing Memory Errors

Delete and Skip

Delete - Insert or Replace a Chord

In RECORD mode, press DELETE once for each stored chord you need to move back over. When the required point is reached, select the corrected chord and press ENTER/PLAYBACK. Continue entering or accepting the following chords until the end of the song, then return to PLAYBACK.

If unwanted chords remain after the intended ending, continue pressing DELETE until each one has been removed.

Skip

SKIP is activated by pressing the three X-marked A, E and B buttons in the bottom or seventh-chord row simultaneously.

  1. For two songs in memory, store the first song followed by two or three blank measures. Press the three X buttons before entering the second song. During playback, the X buttons jump directly to this mark. Only one Skip mark can be stored.
  2. For a song with a second ending, store all chords through the second ending and place the X mark at its beginning. During playback, press the X buttons at the first ending to jump to the second ending.
Delete button control illustration.
Delete button control illustration.
Three X-marked Skip buttons.
Three X-marked Skip buttons.
Original musical example showing a Skip marker used for a second ending.
Original musical example showing a Skip marker used for a second ending.
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OM-250m only

Melody Keyboard - Intermediate Level

Melody keyboard with one-finger chord-memory playback

The OM-250m has a chromatic melody keyboard formed by the lighter buttons in the middle and bottom chord rows, ranging from C through G. Activate it with the MELODY button or by placing Chord Memory in PLAYBACK mode. You may then use SonicStrings, the melody keyboard or both while the Omnichord supplies the accompaniment.

Fit the melody-keyboard overlay to reveal the ten melody voice names. Selecting a melody voice automatically assigns the paired SonicStrings voice.

Melody/SonicStrings assignments: Organ/Omni; Banjo/Guitar; Trumpet/Harp; Harmonica/Banjo; Piano/Strings; Electric Bass/Piano; Human Voice/Organ; Vibes/Celeste; Flute/Marimba; Steel Drum/Steel Drum.

  1. Turn POWER on.
  2. Set MASTER VOLUME to 3 o'clock.
  3. Select Piano; set Voice VOLUME to 3 o'clock and Voice SUSTAIN to 12 o'clock.
  4. Set CHORD VOLUME to 3 o'clock and KEYBOARD VOLUME to 5 o'clock.
  5. Turn AUTO CHORD on in the Chord Mode section.
  6. Select JAZZ in the Rhythm section.
  7. Set Rhythm TEMPO to about 8 o'clock or as desired.
  8. Set Rhythm VOLUME to 12 o'clock.
  9. Put Chord Memory into RECORD mode.
  10. Record the song's chords, pressing ENTER/PLAYBACK after each selection.
  11. Put Chord Memory into PLAYBACK and press ENTER/PLAYBACK to begin. Play melody with the right hand while changing chords with the left; strum during long notes or pauses.
Chromatic melody-keyboard notes marked on the OM-250m chord buttons.
Chromatic melody-keyboard notes marked on the OM-250m chord buttons.
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OM-250m only

Demonstration Song - Intermediate Level

I'd Like to Teach the World to Sing (In Perfect Harmony)

Words and music by B. Backer, B. Davis, R. Cook and R. Greenaway. The complete score, lyrics and chord alignment are retained as an image.

Original score for I'd Like to Teach the World to Sing with melody, lyrics and chord symbols.
Original score for I'd Like to Teach the World to Sing with melody, lyrics and chord symbols.
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OM-250m only

Melody Keyboard - Advanced Level

Optional footswitch chord playback and SonicStrings strumming

The optional OFS-7 footswitch replaces the left hand during chord-memory playback, allowing chords to be advanced with the foot while the left hand plays the melody keyboard and the right hand strums SonicStrings.

Connect the footswitch to jack 23 and place it under either foot. Slight pressure with the toe or heel activates it.

Use the page 17 settings with these exceptions:

  1. Select Piano voice.
  2. Select JAZZ in the Rhythm section.
  3. Record the song's chords into memory. Enter chords with ENTER/PLAYBACK, or with the footswitch when connected.
  4. For playback, put Chord Memory in PLAYBACK mode and press the footswitch for the first and each subsequent chord.
OFS-3 footswitch connected to the OM-250m footswitch jack.
OFS-3 footswitch connected to the OM-250m footswitch jack.
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OM-250m only

Demonstration Song - Advanced Level

Santa Claus Is Comin' to Town

Words by Haven Gillespie; music by J. Fred Coots. The complete score, lyrics and chord alignment are retained as an image.

Original score for Santa Claus Is Comin' to Town with melody, lyrics and chord symbols.
Original score for Santa Claus Is Comin' to Town with melody, lyrics and chord symbols.
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OM-250m only

Additional Features

Key transpose, melody only and octave controls

Transpose

Transpose changes the pitch of the chord section for manual or chord-memory play; it does not affect the melody keyboard.

  1. With power on, press RECORD/PLAYBACK twice so PLAYBACK is lit.
  2. Press and release all three triangle transpose buttons together.
  3. Press the top-row major chord button for the desired new key.
  4. For stored chords, press ENTER/PLAYBACK to begin in the new key. For manual play, press RECORD/PLAYBACK again so both mode indicators are off.

Melody Only

  1. Turn POWER on.
  2. Turn MELODY on in the Chord Memory section.
  3. Press INSTANT OFF to stop the drums. The melody keyboard is now solo; its ten voices, sustain and vibrato remain available.

Octave Down/Octave Up

The octave controls extend the melody keyboard range. Octave Down is the Eb major button marked with a down arrow; Octave Up is the Bb major button marked with an up arrow.

Original notation diagram showing the effective Octave Down and Octave Up melody ranges.
Original notation diagram showing the effective Octave Down and Octave Up melody ranges.
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OM-250m only

Additional Features - Continued

Drums, Drum Fill, programmable introductions and endings, and tuning

Drums Only

  1. At the beginning of a song, use the page 14 settings, turn CHORD VOLUME fully off and press any chord. Only drums sound. Slowly raise CHORD VOLUME to fade in the chord and bass.
  2. At the end of a memory song, press ENTER/PLAYBACK after the final chord. Drums continue until INSTANT OFF is pressed or memory is reset with DELETE/REPEAT.

Drum Fill

During standard play, press ENTER/PLAYBACK to add a drum fill. During memory playback, press the Db major chord button; ENTER/PLAYBACK is then reserved for advancing chords.

Programmable Introduction and Ending

  1. Put Chord Memory into RECORD mode and clear the memory.
  2. Before the first chord, press the three INTRO/END buttons (#32) together without pressing ENTER.
  3. Enter the song normally.
  4. After entering the final chord, press the three INTRO/END buttons together, again without pressing ENTER.
  5. Select PLAYBACK. Both markers are required for the feature to work.

Programming Drums Only in Memory

In RECORD mode, press ENTER/PLAYBACK with no chord sounding to store a blank measure. With Rhythm volume up, the blank step plays drums only. Blank measures can also separate two songs and allow time to change rhythm or balance.

Tuning Control

The Omnichord is factory set to A=440. To match an out-of-tune accompanying instrument, rotate tuning control #24 clockwise or counter-clockwise.

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OM-250m only

MIDI Interface

Connecting the OM-250m to external MIDI equipment

The OM-250m MIDI OUT can control an external synthesizer, computer, sequencer or other MIDI device. Chords, strumplate, melody and walking bass may be assigned to MIDI while internal Omnichord sounds are also used if desired.

  1. With both devices off, connect an RW-MIDI 10 or 20 cable to OM-250m MIDI OUT jack 36, then connect the other end to the external device's MIDI IN. Turn both devices on after connections are complete.
  2. MIDI-device sound and Omnichord sound are generated together. To hear MIDI only, reduce the relevant Omnichord function volume; to mix them, set each Omnichord function volume as desired.
  3. The OM-250m transmits in MIDI OMNI mode and on MIDI channels 1, 2 and 3. In OMNI mode, the receiver handles chord, strumplate, melody and walking-bass data. In channel mode: channel 1 is Strumplate or melody keyboard, channel 2 is chords, and channel 3 is walking bass.
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Original 24

Both models

Notes

Original notes page

Printed page 24 is a deliberately open notes page. The original ruled area is retained in the facsimile scan.

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Original 25

Historical purchasing information

Historical Order Form

Available in the U.S.A. only when originally printed

The printed order form offered Omnichords, adapters, cases, headphones, a strap, footswitch, amplifiers, microphone, stand and songbooks. It directed orders to Suzuki Corporation, P.O. Box 261030, San Diego, CA 92196.

The address, prices, payment instructions and availability are reproduced solely as historical source material and are not current ordering information.

Products listed

OM-150 and OM-250m Omnichords; OCA-7 A/C adapter; OCD-7 12-volt car adapter; OVP-7 vinyl carrying case; OMC-7 hard-shell case; XGD-1 headphones; OMS-7 padded strap; OFS-7 footswitch; OMA-10 and OMA-20 amplifier systems; OMM-2 microphone; MPS-100 stand; OS-7, JFK-7, EF-7 and OC-7 songbooks.

Original printed accessory order form with product, price, quantity and payment fields.
Original printed accessory order form with product, price, quantity and payment fields.
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Original 26

Historical product and price information

Accessories

Expand your Omnichord experience

Accessories

OCA-7 A/C adapter - $12.50; OCD-7 D/C car adapter - $12.50; OVP-7 vinyl carrying bag - $24.50; OMC-7 hard-shell plastic carrying case - $49.50; OFS-7 footswitch for OM-250m - $26.50; OMS-7 adjustable padded strap - $13.50; MPS-100 adjustable stand - $79.00; XGD-1 stereo headphones - $19.50.

Sound Reinforcement Systems

OMA-10 ten-watt amplifier and speaker system - $179.00; OMA-20 twenty-watt amplifier and speaker system - $219.00; OMM-2 high-impedance microphone - $49.00.

Omnichord Songbooks

OS-7 Omnichord Spoken Here, 200 pages - $19.95; JFK-7 Just For Kids, 100 pages - $12.95; EF-7 Enduring Faith, 100 pages - $12.95; OC-7 Omnichord Country, 100 pages - $12.95.

Original period accessory lineup including cases, amplifiers, adapters, headphones, strap, footswitch, stand and songbooks.
Original period accessory lineup including cases, amplifiers, adapters, headphones, strap, footswitch, stand and songbooks.
View original scanned 26Facsimile of original 26.
Original rear cover

Models OM-150 and OM-250m; historical warranty information

Specifications & Warranty

Rear cover

Shared Specifications

SonicStrings voices: Omnichord, Guitar, Harp, Banjo, Strings, Piano, Organ, Celeste, Marimba and Steel Drums. Strumplate range: four octaves. Chord buttons: 36 softouch buttons providing 84 chords - major, minor, seventh, major seventh, minor seventh, augmented and diminished.

Rhythms: Rock 1, Rock 2, Rock 3, March, Jazz, Country, Bluegrass, Bossanova, Samba and Waltz. Variable controls: Master Volume, Strumplate Volume, Strumplate Sustain, Rhythm Volume, Rhythm Tempo, Chord Volume and Tuning.

Button controls include Master on/off, Demo, Strumplate voices, rhythms, Drum Start, Chord Plus, Manual Chord and Instant Off. Tuning range: plus or minus 30 cents. Output: 7 watts through a 3.5-inch, 8-ohm speaker.

OM-250m Additional Functions

Chord memory: Record/Playback, Delete/Repeat, Enter/Playback, Memory Clear, Skip, Intro/Ending and 120-chord capacity. Other functions include Drum Fill, Transpose, MIDI Out and melody-keyboard octave shift.

Melody-keyboard voices: Organ, Banjo, Trumpet, Harmonica, Piano, Electric Bass, Human Voice, Marimba, Calliope and Steel Drums.

Connections, Power and Dimensions

OM-150 jacks: A/C power input and 1/4-inch line-out/headphone. OM-250m adds footswitch and MIDI Out.

Power: 12 volts DC from eight C batteries or OCA-7 A/C adapter, rated 12 volts 400 mA with negative-tip polarity. Approximate dimensions: 18.625 inches long by 11.25 inches wide by 1.75 inches thick; weight 3 pounds 9.5 ounces.

Suzuki Limited Warranty

The original warranty covered the product, excluding exterior cosmetic parts, against defects in materials and workmanship under normal use. Suzuki paid repair labour for 90 days from purchase and supplied new or rebuilt replacement parts for one year.

Warranty service required proof of purchase through an authorized Suzuki retail centre. Misuse, abuse, alteration or opening the product voided the warranty. The printed address was Suzuki Corporation, San Diego Distribution Center, P.O. Box 261030, San Diego, California 92196; customers outside the United States were directed to the original retailer.

View original scanned rear coverFacsimile of original rear cover.

Back cover

Original back cover.