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Zoom RT-223


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Zoom RT-223 Audio Interface Manual

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IEC R6 (size AA) battery x 4 Batteries must all face in the same direction.


After connections are established, check the sound by performing the following steps.
1. With the playback system turned off
and the volume fully turned down, double-check whether all connections have been made correctly.
3. Set the [POWER] switch of the
RT-223 to ON, and then turn power to the playback system on.
2. To power the unit from the AC
adapter(optional),connect the AC adapter to the [DC IN] connector and turn the [VOLUME] control fully down.
4. While tapping a pad to produce
sound, adjust the [VOLUME] control of the RT-223 and the volume control on the playback system to a suitable position.

RT223(E).fm 8

Quick Guide
This Quick Guide demonstrates how to operate your RT-223, using a few representative examples. Some of the terms and concepts used in this manual are also explained here.

Quick Guide 1

Listening to the Demo Song
The RT-223 comes with a demo song already built in. Hear for yourself what RT-223 can do.
Connect the RT-223 to the playback system and turn the power on.
Press the [FUNCTION] key.
Verify that the [FUNCTION] key flashes.

Press the [SONG] key.

The demo song starts. Sounds just like the backup of a live band, doesn't it? Note how effectively various drum, percussion, and bass sounds are combined. The RT-223 can produce such a great variety of sounds with ease.

To stop the demo

Press the [PATTERN] key or [SONG] key.

RT223(E).fm 9

Drum kits and bass programs
The backup sound provided by the RT-223 consists of a drum kit and a bass program. A drum kit is a collection of drum sounds including bass drum, snares, and tomtom, percussion sounds such as congas and bongos, and various other effect sounds. These are combined to create backing tracks for a wide range of music genres. The RT-223 comes with 127 drum kits of which 70 are preprogrammed. You can also create your own original drum kits. A bass program is a bass sound such as electric bass, acoustic bass, or synthesizer bass. 12 types of bass programs are available, of which one can be selected for playback.

Bass program

Drum kit
When [PATTERN] key is pressed RT-223 switches to pattern mode (for playing and recording patterns).
When [SONG] key is pressed RT-223 switches to song mode (for creating backing songs which are sequences of patterns).

RT223(E).fm 10

Quick Guide 2 Playing the Pads
The top panel of the RT-223 has 13 pads which serve to play drum kits and bass programs.
Turn the power on. Press the [PATTERN] key.
The [PATTERN] key lights up and the RT-223 is in pattern mode.

Hold the [TEMPO] key.
While the [TEMPO] key is held down, the display shows the currently active tempo.

Tempo value (BPM)

VALUE [+] key Increases the TEMPO tempo value. VALUE [-] key Decreases the tempo value. HINT 125
You can tap the [TEMPO] key twice in succession to specify the tempo ( p. 21).

To mute the bass sound

Press the [BASS MUTE] key once.
Press the key once more to turn the bass on again.

To stop pattern play

Press the STOP [P] key.
VALUE [+] key Selects next higher pattern number. VALUE [-] key Selects next lower pattern number. Pattern name Pattern number


RT223(E).fm 14
Quick Guide 4 Assembling a Song by Hitting the Pads
In song mode, you can preassign patterns to pads, making it easy to switch patterns by hitting the pads. This function lets you assemble patterns for a song in real time, complete with fillins and breaks.
Turn power on. Press the [SONG] key.
The [SONG] key lights up and the RT-223 goes into song mode. The display shows the name and number of the currently selected song.


Song name Song number
Use the VALUE [+]/[-] keys to select a song.
In this example, select a song from numbers 0 -9. VALUE [+] key Select next higher song number. VALUE [-] key Select next lower song number. For these preprogrammed songs numbers, patterns are already assigned to the pads. When you hit pad 0 (INTRO), the intro pattern plays, and then the RT-223 automatically switches to pad 2 (VERSE A).

Press pad 0

RT223(E).fm 15
Press pads 1 - 9, [+], [x].
The respective patterns assigned to the pads will play. When pad 4 (FILL A), pad 8 (FILL B), or pad [+] (BREAK) is pressed, the fill-in or break pattern plays, and then the RT-223 switches automatically to the pattern of another pad. When you press one of these pads, a new pattern will start playing at the beat, even if the previous pattern is not finished. (For other pads, the pattern is switched only after the current pattern has finished.) Measure number 4/4




For most of the songs 0 - 9, patterns are assigned to the pads as follows.
VERSE B variations VERSE A variations BRIDGE


Press pad [()].
In this way, you can assemble the accompaniment for an entire song in real time. HINT
You can also record your pad playing in the song ( p. 36). The assignment of patterns to pads and the transition settings can be changed ( p. 37).
When you hit pad [()] (ENDING), the ending pattern plays, and then the RT-223 automatically stops playing.

RT223(E).fm 16

Quick Guide 5 Using Groove Play
Groove play is a special feature of the RT-223 which lets you switch among various patterns simply by tapping the pads. This makes it easy to play with patterns like a DJ spinning records.

Turn the power on.

Press the [SONG] key and [PATTERN] key together.
The [SONG] key and [PATTERN] key light up, and the RT-223 is in groove play mode.

Push a pad.

While the pad is held down, the pattern assigned to that pad is played. Give it a try and check out which patterns are assigned to the various pads. HINT
The pattern assigned to a pad can be changed ( p. 48).
Release Pad Hold down Pad

Pattern assigned to pad

RT223(E).fm 17
To play multiple patterns simultaneously
Push several pads together.
In groove play mode, up to 4 patterns can be played simultaneously. While playing a basic drum pattern, you can do things such as hitting another pad to overlay a bass pattern and then adding a snare fill-in. By using the right timing when pushing the pads, you can create complex rhythms.

To stop groove play

Press the [SONG] key or [PATTERN] key.
RT-223 switches to pattern mode.
RT-223 switches to song mode.
To keep playing the pattern without pressing the pad
Hold down the [REPEAT/STEP] key while pushing the pad.
The pattern will continue to play when the pad is released. This is useful to keep on playing a basic drum pattern.
Pad Pattern assigned to pad
To stop the pattern, push the same pad once more.

RT223(E).fm 18

Playing the Pads (Manual Play)
The RT-223 lets you not only play back existing patterns and songs, it also allows you to manually play the unit by tapping the pads. This section describes how to manually play the unit. HINT
When the [BASS] key is pressed in step 2, a bass program can be played, but there is a difference in how the pads operate. With a drum kit, the sound plays through even if the pad is released immediately. With a bass program, the sound continues only as long as the pad is pressed.
Playing by tapping the pads

The RT-223 assigns various sounds or pitches to the pads, depending on the currently selected drum kit/bass program. Play the pads to discover the realistic sounds offered by the RT-223.

4. Press the [BANK] key.

1. Press the [PATTERN] key.
This activates the pattern mode. The [PATTERN] key lights up.
Each time you press the [BANK] key, the set of sounds assigned to the pads (pad bank) changes. The RT-223 gives you a choice of three pad banks. HINT
When a bass program is selected, pressing the [BANK] key changes the pitch range of the bass sound.

2. Press the [DRUM] key.

5. To play the sound of a pad
The [DRUM] key lights up, and you can play the drum kit using the pads. During manual play, you use the [DRUM] key and [BASS] key to select the drum kit or bass program. (The selected key lights up.)
repeatedly, hold down the [REPEAT/ STEP] key while pushing the pad.

3. Tap one of the pads.

The sound will be repeated while the pad is being held down. The repeat rate depends on the tempo setting. HINT
The repeat play interval can be adjusted with the quantize setting ( p. 65).
The LED of the pad lights up briefly and the sound assigned in the drum kit to that pad is heard. The volume changes according to how strongly you tap the pad.

RT223(E).fm 19

Selecting a kit/program
The RT-223 lets you select among 127 drum kits (70 preprogrammed) and 12 bass programs. Try changing the setting as follows.
1. Press the [PATTERN] key. 3. Use the VALUE [+]/[-] keys to select
the drum kit/bass program.
The [PATTERN] key lights up and the RT-223 goes into pattern mode.
2. Press the [DRUM] key/[BASS] key
and then the [KIT/PROG] key.
The kit/program number shown on the display increases or decreases by one, and the kit/program is switched accordingly.
The name and number of the currently selected drum kit (or bass program) appears on the display.


Available drum kit types are printed on the panel.

If there is no empty pattern, you should delete an unwanted pattern (p.33 ).

3. Press the [DRUM] key.

6. Press the [EXIT] key to return to

pattern mode.

The sound of the newly selected drum kit can now be played in pattern mode.

RT223(E).fm 23

7. Press the [FUNCTION] key and then

pad 5 (QUANTIZE).

The current quantize value appears on the display.
bass drum and snare drum using quarter notes, you can record a hi-hat sequence with sixteenth notes.
10.While holding down the REC [O]
key, press the PLAY [R] key.


Quantize value
Quantization refers to the degree of detail with which notes are recorded. By setting the quantize value to the shortest note to use for the pattern, recording can be carried out while automatically maintaining precise timing. If you select the finest quantize setting, you can retain the human touch that is characterized by slightly irregular timing. HINT
The [FUNCTION] key is used to make various settings for the RT-223. For details, please refer to page 63.
The REC [O] key and PLAY [R] key light up, and the [TEMPO] key flashes according to the currently selected tempo. The metronome sound starts. HINT
When you call up an empty pattern, it will be set to the same beat and number of measures as the previous pattern. These settings can be changed, as described on pages 64, 65.
11.Tap the pads in accordance with the

metronome sound.

8. Use the VALUE [+]/[-] keys to set the
quantize value (shortest note to be recorded).
4.Quarter note 8.Eighth note 12.Eighth triplet note 16.Sixteenth note 24..Sixteenth triplet note 32..Thirty-second note 48..Thirty-second triplet note Hi..1 tick (1/96 of quarter note)
9. Press the [FUNCTION] key once
The new quantize value is set and the unit returns to the pattern mode. HINT
After recording is completed, it is possible to change the quantize value and record again on the same track. After recording
The sound of the respective pad is heard, and it is recorded for the duration set with the quantize value. When the end of the pattern is reached, the recording loops back to the beginning and continues, allowing you to add to the recording as often as desired. You can check the current position in the pattern on the display (measure/ beat). HINT

The REC [ O ] key goes out, and step input is completed.

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Editing a Pattern
This section explains how to edit patterns.
Copying a pattern/ Returning a pattern to the factory default condition
You can copy the currently selected pattern to another position. This is useful to change only a part of a pattern, such as changing the bass track phrasing while keeping the drum track. Patterns that were preprogrammed at the factory (patterns 0 - 439) can be returned to their original condition by the copy process described below. NOTE
When the copy is executed, the existing contents of the pattern selected as copy target will be erased. Use this function with care.
The [INSERT/COPY] key flashes and the current pattern is selected as the copy source.
4. Use the VALUE [+]/[-] keys to select
the pattern to be used as copy target.

TO 500E

Copy target pattern number
When you select an empty pattern, the indication E appears to the right of the pattern number.
To return one of the factory preprogrammed patterns (0 - 439) to the original condition, select the same number as copy source and copy target (the indication COPY appears on the display). Then proceed to step 5.
The RT-223 goes into pattern mode, and the pattern selection screen appears.
5. To execute the copy, press the


When you have selected an empty pattern as copy target The copy is carried out when you press the [INSERT/COPY] key. When you have selected an existing pattern as copy target The indication REPLACE appears on the display when you press the [INSERT/COPY] key. To execute the copy, press the [INSERT/ COPY] key once more. When you have selected the same pattern as copy source and copy target The indications FACTORY and REVERT appear alternately on the display when you press the [INSERT/COPY] key. To execute the
the pattern to use as copy source.
3. Press the [INSERT/COPY] key.

RT223(E).fm 33

factory restore process, press the [INSERT/ COPY] key once more. When the copy or factory restore process is completed, the indication DONE appears on the display, and the unit returns to the pattern mode. By pressing the [EXIT] key instead of the [INSERT/COPY] key, you can cancel the process and return to pattern mode.
Assigning a name to a pattern
When you have selected an empty pattern and created a new pattern, the name PAT xxx (where xxx is the pattern number) will automatically be assigned to it. You can change this name later.
1. In pattern mode, select the pattern

Erasing a pattern

A user pattern can be erased when it is no longer needed. This can be useful to free up memory space. NOTE

When a patter n has been erased, its contents can no longer be restored. Use this function with care.
whose name you want to change.

2. Press the [EDIT] key.

The currently selected character of the pattern name flashes.

to be erased.

2. Press the [DELETE/ERASE] key. 3. Use the cursor left/right keys to move
the cursor position, and use the VALUE [+]/[-] keys to select the character.
The following characters are available. The [DELETE/ERASE] key flashes, and the current pattern name and number alternate with the indication DELETE on the display.
Numbers: 0 - 9 Letters: A - Z Symbols: (space), ( )
3. To execute the erasing process,
press the [DELETE/ERASE] key once more.
To cancel the process, press the [EXIT] key instead of the [DELETE/ERASE] key.
4. Repeat step 3 until the name is


5. When name input is completed,

press the [EXIT] key.

The name is accepted, and the RT-223 returns to the pattern mode.

RT223(E).fm 34

Creating Songs (Song Mode)
This section explains what a song in the RT-223 is and how to create songs.

What is a song?

A song in terms of the RT-223 is a sequence of patterns (a number of measures of drum track and bass track) lined up in play order, to provide the backing for an entire musical piece (see illustration below). The maximum number of songs that can be stored in the RT-223 is 100. A song can be input in three different ways. Step input With this method, you start at the beginning of the song and proceed in discrete steps, specifying the pattern to play and the number of measures for each step. This method is suitable for detailed, manual work on a song. Real-time input With this method, you first assign the patterns to the pads and then play the patterns in real time. This method is suitable for quick and intuitive input of a song.
which input method was used. After creating a song with FAST input or real-time input, you can still ne-tune it with step input. Besides pattern information, a song also contains so-called event data (tempo, beat, volume and other information, see page 42). Use step input to enter event information.
Creating a song using step input
This section explains how to create a song by lining up patterns one by one.

(1+2)X_ 1+2)X3_

If the formula exceeds seven digits, earlier character/symbol entries are scrolled off the display. To see the scrolled part, use the cursor left/right keys to move the display position.
An example for creating the rhythm pattern sequence 0 + (1 + 2) x 3 is shown below.

RT223(E).fm 41

The FAST method can only be used to write a song in one go, from beginning to end. Entering patterns partly into the song is not possible. To edit a song that was written with this method, edit the formula and then write the entire song again, or use step input.
3. Use the pads to enter a formula.
The input method is explained on page 40.


If you make a mistake during input, you can correct it as follows. Deleting a number/symbol Use the cursor left/right keys to move the flashing segment to the number/symbol to delete, and press the [DELETE/ERASE] key. Inserting a number/symbol Use the cursor left/right keys to move the flashing segment to the point where you want to insert a number or symbol, and input the new number/symbol.
If you select an existing song and write it out using FAST input, the entire previous content of the song will be overwritten. Use this function with care.

the REC [O] key.

4. When formula input is completed,
press the [FUNCTION] key.
The song is written and FAST input terminates. NOTE
The indication FAST appears briefly on the display. Then an underline cursor appears at the first character position. FAST input is now possible.
If the entered formula contains a syntax error, the indication SYTXERR appears on the display when you press the [FUNCTION] key. After a while, the formula input screen appears again. Correct the wrong part, and perform the write operation again.


RT223(E).fm 42
including pattern information is input, the EVENT indication is shown (see illustration below).
"EVENT" indication
Entering event information
Besides pattern information, you can enter various other information (called event data) for a song, such as tempo, beat, and volume. You can gradually fade out the volume or switch the sound of the drum kit or bass program at any point in the song. To add event data to a song for which patterns have already been input, use the step input method.

6. Use the VALUE [+]/[-] keys to adjust

the value.

7. Repeat steps 4 - 6 for the other
The numeric settings 0 - 7 determine the group of a pad (0: no group, 1 - 7: group 1 - 7). The sounds of pads that are in the same group will not be produced together. By assigning the pads for open hi-hat and closed hi-hat to the same group, the open hi-hat sound will be suppressed when you activate the closed hi-hat sound, resulting in a natural effect. The group number 0 - 7 applies both to PL and MN. Therefore pads PL1 and MN1 will not produce sound together. SENDLVL (Send level) Sets the signal level to be supplied to the REVERB effect. The setting range is 0 - 100. This setting is made separately for each pad and is independent of the overall drum kit send level setting ( p. 56) made in effect mode. To control effect intensity for each pad individually, it may be best to set the effect mode send level to 0 and adjust the SENDLVL parameter for the pads. NOTE
If the KICKDRY parameter in the patch currently selected for the REVERB effect is ON, changing the send level of a pad to
8. When the setting is complete, press

the [EXIT] key.

The settings are automatically saved, and the drum kit select screen appears again. To return to pattern mode, press the [PATTERN] key.

RT223(E).fm 52

Copying a drum kit/ Returning a drum kit to the factory default condition
You can copy the currently selected drum kit to another position. This is useful to copy an existing preprogrammed drum kit and then change only a part of it to quickly create your original. By specifying the same drum kit as copy source and copy target, you can return the drum kit to its factory default condition. NOTE
When the copy is executed, the existing contents of the drum kit selected as copy target will be erased. Use this function with care.
the number of the copy destination drum kit.
Copy destination drum kit number
To return a drum kit to the factory default condition, select the same number as copy source and copy target (the indication COPY appears on the display). Then proceed to step 6.
6. To execute the copy, press the
If a different drum kit number is selected for the copy source and copy target The copy will be carried out when you press the [INSERT/COPY] key. When you have selected the same drum kit as copy source and copy target The indications FACTORY and REVERT appear alternately on the display when you press the [INSERT/COPY] key. To execute the factory restore process, press the [INSERT/ COPY] key once more. When the copy process is completed, the indication DONE appears, and the RT-223 returns to the drum kit select screen. If you press the [EXIT] key instead of the [INSERT/COPY] key, the process is canceled and the RT-223 returns to the drum kit select screen.

1. Press the [COMP EQ] key (to edit
the COMP EQ effect) or the [REVERB] key (to edit the REVERB effect) several times, so that the key lights up.
The RT-223 switches to effect mode, and the patch select screen appears.
6. Use the cursor left/right keys to
select the effect parameter to edit.
Which effect parameters are displayed will depend on the effect type. In the illustration below, MLTCOMP has been selected as effect type of the COMP EQ effect, and the XOVER H parameter is displayed.

the patch to edit.

To change the effect intensity of the REVERB effect, use the cursor left/right keys to bring up the indication DR SEND on the display, and adjust the send level.


Effect parameter name Setting value
The [COMP EQ] key or [REVERB] key flashes,

RT223(E).fm 58

7. Use the VALUE [+]/[-] keys to
For information on effect types and effect parameters, see the appendix at the end of this manual.
1. At the patch select screen for the
COMP EQ effect or REVERB effect, select the patch to store or swap.
You can also store or swap patches from the patch editing screen. In this case, the patch being edited will be the one that is stored or swapped. To initialize a patch, select the patch that you want to return to the factory default condition.
8. Repeat steps 6 - 7 as necessary to
adjust other effect parameters.
When editing the COMP EQ effect, you can bring up LEVEL to adjust the overall volume level of the patch. When editing the REVERB effect, you can bring up EFX LVL to adjust the mixing amount of the effect sound. When editing the REVERB effect, you can bring up KICKDRY to individually switch the effect off and on for pad 0 of pad bank 1/2 (usually assigned to the kick drum).
The [INSERT/COPY] key flashes, and the patch name/patch number and the indication "STORE >" are shown alternately on the display.


9. When you have nished editing the
patch, press the [EXIT] key.
The patch select screen appears again. Press the [EXIT] key once more to terminate effect mode. NOTE
If you switch to another patch without storing the edited patch rst, the edit contents will be lost. For information on how to store a patch, see the next section.
select the "STORE >", "SWAP >", or "FACTORY" (initialize) action.

Setting the playback timing shift (SHIFT)
Setting range: -192 to +192 (Default: 0) Shifts the playback timing of a specific track in the currently selected pattern back or forth in 1-tick units (1/96 of a quarter note). The maximum shift is 2 beats. NOTE
Once the setting is made, it cannot be undone. Use this function with care. When you shift the playback timing of a track, the preceding or following notes are deleted.
Displaying the remaining amount of memory (PATTERN)
Pressing the [FUNCTION] key followed by the [PATTERN] key brings up a percentage display of the remaining amount of memory. This display is for information only, it cannot be changed.

RT223(E).fm 68

Other Functions
This section describes examples for combining the RT-223 with optional equipment and external components. With each subsequent push of the foot switch, patterns are switched between pad 4 and pad 8.If you hold down the foot switch during play, the pattern switches to pad [()] (see illustration 1 below). By specifying the NEXT parameter ( p. 38) for the above pads, you can use other pattern combinations or stop play after a specific pattern. For example, assume that INTRO is assigned to pad 0 and VERSE A to pad 2.When you set the NEXT parameter for pad 0 to P02, pressing the foot switch will cause INTRO to play, followed by VERSE A (see illustration 2 below). Similarly, if FILL A is assigned to pad 4 and VERSE B to pad 6, setting the NEXT parameter for pad 4 to F06 will cause FILL A to play from the next beat after pressing the foot switch, and then play can be switched to VERSE B (see illustration 3 below).

Using the jam function

The jam function lets you use the foot switch to play multiple patterns assigned to pads in song mode. This is convenient when you want to use your hands for playing an instrument, while still being able to start patterns and switch them at any desired point. NOTE
The jam function is available only when the RT-223 is in song mode.
The following four pads can be directly controlled with the jam function: pad 0, pad 4, pad 8, and pad [()]. When you press the foot switch while the RT-223 is stopped, the pattern of pad 0 begins playing.

1. Connect the MIDI OUT jack of the
MTR, rhythm machine, or other MIDI component to the [MIDI IN] connector of the RT-223, using a MIDI cable.

4. Press the [SONG] key.

The indication JAM appears on the display.

RT223(E).fm 70

Verify that the external MIDI equipment is capable of sending MIDI Clock and Start/ Stop/Continue messages.
sound sources of the RT-223.
1. Connect the MIDI keyboard, MIDI
sequencer, or other MIDI component to the [MIDI IN] connector of the RT223, using a MIDI cable.
2. Press the [FUNCTION] key followed

by pad [()] (MIDI).

The display for enabling/disabling reception of MIDI sync messages appears. The display for enabling/disabling reception of MIDI sync messages appears.
3. Press the [DRUM] key (or [BASS] key).
3. Use the VALUE [+]/[-] keys to bring
up the indication Ext on the display.
The current setting value of the selected track appears on the display.
4. While continuing to hold down the key
pressed in step 3, use the VALUE [+]/[] keys to set the MIDI receive channel for the track to the send channel of the external MIDI equipment.
4. Press the [FUNCTION] key.
In this condition, play operation of the RT-223 is synchronized to the external MIDI equipment.
5. Select the pattern or song to play in
6. Start playback at the external MIDI


The pattern or song of the RT-223 plays in synchronization with the tempo of the external MIDI equipment. For information on MIDI channel setting, see page 67.
The MIDI receive channel is set for the track. The RT-223 produces sound according to the note numbers received via the [MIDI IN] connector. Program change messages can be used to switch drum kits and bass programs of the RT-223. For information on program change numbers and corresponding drum kits and bass programs, refer
Using MIDI equipment to play the RT-223
Using a MIDI keyboard, MIDI sequencer, or similar MIDI device you can play the built-in

No.1 Pattern 417

FNK TMP ROOT Next D P02 G P01 D P02 A P03 D F06 G P05 D P06 A P07 D F02 D P11 D P02 G P09 D stp

No.4 Pattern 422

LTN TMP ROOT Next G P02 A# P01 G P02 C P03 G F06 A# P05 G P06 C P07 G F02 F P09 G F12 G P11 G stp

No.7 Pattern 419

RnB TMP ROOT Next F# P02 A P01 F# P02 B P03 F# F06 A P05 F# P06 B P07 F# F02 E P09 B F11 F# P00 F# stp

No.2 Pattern 420

HIP TMP ROOT Next E P02 E P01 E P02 E P03 E F06 E P05 E P06 E P07 E F02 E P09 E F02 E P11 E stp

No.5 Pattern 419

SHL TMP ROOT Next C P02 D P01 C P02 D# P03 C F06 D# P05 C P06 F P07 D F02 C P09 F P10 D# P11 C stp

No.8 Pattern 424

BLS TMP ROOT Next E P02 A P01 E P02 B P03 E F06 A P05 E P06 B P07 E F02 D P11 D F02 G P09 E stp

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MIDI Implementation
ZOOM Corporation 1. Recognized Messages Status 1st 2nd Description ----------------------------------------------------------------------------------8nH kk vv Note Off kk: note number vv: velocity will be ignored 9nH 9nH BnH BnH BnH BnH CnH EnH F2H F3H F8H FAH FBH FCH kk kk 0BH 11H 78H 7BH pp ll sl ss hh sh 00H vv vv vv xx xx Note Off Note On kk: note number kk: note number vv: velocity TOKYO, JAPAN
Channel Volume vv: volume value Channel Expression vv: expression value All Sounds Off All Notes Off Program Change Pitch Bend Change pp: program number hhll: pitch bend value (See Note 1)
Song Position Pointer shsl: song position (See Note 2) Song Select ss: song number 0-99 Timing Clock Start Continue Stop
NOTE: n = MIDI Channel Number ( 0000 - 1111 ) 1. Relationship between Program Numbers and Kit Numbers are assigned as "Kits and Program List" attached. 2. SongPositionPointer for a pattern , new location is wrapped around the bar length of the pattern. 3. Note On messages can be recorded into a pattern. 2. Transmitted Messages NONE. 3. System Exclusive Messages No SysEx messages are recognized/transmitted.

RT223(E).fm 87

MIDI Implementation Chart
[MultiTrack Rhythm Machine Model RhythmTrak RT-223 ] MIDI Implementation Chart Date : 30.Nov.,2004 Version :1.00
+---------------------+--------------------+--------------------+---------------------+ | | Transmitted | Recognized | Remarks | | Function. | | | | +---------------------+--------------------+--------------------+---------------------+ |Basic Default | | 1-16 | Memorized | |Channel Changed | | 1-16 | | +---------------------+--------------------+--------------------+---------------------+ | Default | | 3 | | |Mode Messages | | | | | Altered | ****************** | | | +---------------------+--------------------+--------------------+---------------------+ |Note | | 0-127 | | |Number | True voice | ****************** | | | +---------------------+--------------------+--------------------+---------------------+ |Velocity Note ON | | o | | | Note OFF | | x | | +---------------------+--------------------+--------------------+---------------------+ |After Key's | | x | | |Touch Ch's | | x | | +---------------------+--------------------+--------------------+---------------------+ |Pitch Bend | | o | | +---------------------+--------------------+--------------------+---------------------+ | | | 7 | Volume | | | | 11 | Expression | |Control | | | | |Change | | | | | | | | | | | | | | | | |120 | All Sounds Off | | | | | | +---------------------+--------------------+--------------------+---------------------+ |Prog | | o 0-127 | | |Change | True # | ****************** | | | +---------------------+--------------------+--------------------+---------------------+ |System Exclusive | | x | | +---------------------+--------------------+--------------------+---------------------+ |System | Song Pos | | o | | | | Song Sel | | o | | |Common | Tune | | x | | +---------------------+--------------------+--------------------+---------------------+ |System | Clock | | o | | |Real Time | Commands | | o | | +---------------------+--------------------+--------------------+---------------------+ |Aux | Local ON/OFF | | x | | | | All Notes OFF| | o | | |Mes- | Active Sense | | x | | |sages | Reset | | x | | +---------------------+--------------------+--------------------+---------------------+ |Notes No messages will be transmitted. | | | | | | | +-------------------------------------------------------------------------------------+ Mode 1 : OMNI ON, POLY Mode 2 : OMNI ON, MONO o : Yes Mode 3 : OMNI OFF, POLY Mode 4 : OMNI OFF, MONO x : No


The Perfect Session Partner
The RT-223 is a drum & bass machine for any kind of rhythm play. Small in size and light in weight, this low-profile unit will go with you anywhere. You can get a session going with your very own rhythm section in a flash, even on your desktop.
Seventy different kits from Rock Drum to Voice Percussion
The range of drum kits built into the RT-223 is simply amazing. A total of 70 drum kits are built-in, with acoustic drum sounds for rock, R&B, funk, and jazz. Add an analog rhythm machine great for Techno and Hip Hop. Ethnic percussion sounds are also available. There are also five Human Voice "Beat Box" Percussion kits >>> DRUM KITS that are currently all the rage in Hip Hop. Create advanced rhythm tracks where kick, snare, scratch and other instrument sounds are expressed as human voices.
Quickly create original songs with FAST method
You can combine any number of drum patterns in any order to create a song. In addition to step input where you select patterns one by one, the RT-223 also offers the innovative FAST (Formula Assisted Song Translator) method. With FAST, you use simple mathematical symbols such as +, , (, and ) to specify the pattern lineup. This is especially useful for songs with repeated patterns. To play pattern number 12 eight times and then pattern 25 sixteen times, you simply enter "12 x 8 + 25 x 16". By enclosing this in brackets and adding a multiplication factor such as "( ) x 4", the entire sequence can be repeated. The RT-223 lets you store as many as 100 songs for automated backing.
Groove play mode lets you play patterns like a DJ
Assigning patterns to pads allows you to trigger patterns simply by tapping the pads. This is great for live performances and for DJ use.
Create your own drum kits
A drum kit consists of 13 pads x 3 banks = 39 sounds. Sound sources can be freely selected and assigned to the pads. Fine-tune parameters such as pitch, level, and panning to create your own original drum kits. The RT-223 lets you store up to 127 user-programmed kits.
User-friendly design for simple operation
The RT-223 is a dedicated rhythm machine designed to make rhythm programming truly easy. You can take the shortest possible route from idea to finished song. No need to boot up a PC and start DAW software, or laboriously read sound source data into a sampler. Most controls on the top panel of the RT-223 have only a single function, and there are no complicated multi-level menus. The backlit LCD shows all important information at a glance.
Twelve built-in bass sound sources
Choose from electric bass styles such as Pick, Finger, and Slap. Or select Acoustic Bass, Synthesizer Bass, or one of the other bass sources, 12 in total. To create a bass line, you can play the pads with assigned chromatic pitches just like a keyboard. A dedicated switch quickly lets you mute the bass sound at any time.
Total control with a foot switch
Intro, pattern 1, fill-in, pattern 2,. ending. Imagine controlling such a sequence just with a foot switch. With a Zoom FS01 Foot Switch (sold separately) you can rock out live, triggering patterns with your foot. You can also use the switch to start or stop a pattern, perform tap input to specify the tempo, trigger the bass drum sounds, switch between hi-hat open/close, and much more.

Two types of effects to control EQ and Ambience
The overall EQ and tonal quality of a drum kit can be adjusted with the COMP EQ effect. The REVERB effects can be used simultaneously. These effects can also be applied to bass sounds. Up to 40 settings for each effect can be stored as patches.

[COMP EQ effect]

The RT-223 incorporates a multi-band compressor with independent settings for each frequency band. By applying the effect to just the right frequency range, you can tighten up the kick drum, give snares and tom-tom more body, or perform other mastering tricks to spruce up the sound of a drum kit. A resonance filter and Low-Fi effect great for dance music are also built-in.
Metronome function for simple repeat practice
The built-in metronome with its dedicated key is handy for simple repeat practice. In addition to the standard 2 - 8 beat, you can also use 6/8 beat, 7/ 8 beat, 2+3 beat, 3+4 beat and other mixed beat settings.
MIDI IN connector and external line input
The MIDI IN connector allows synchronized play with an external device. By receiving note messages, the RT-223 can serve as drum sound source module in a MIDI-based system. The line input accepts the signal from a CD player or other line-level source, or from a guitar or bass via an effect. Seamlessly integrate the RT-223 into any session.

[REVERB effect]

Four different kinds of reverb (Hall, Room, Spring, Plate) and Chorus, Flanger, and Delay are included. The effect send level can be set for each sound source individually. For example, you could apply Gate Reverb to the snare sound only, or place the entire drum kit in a hall. Flanger and Delay can be synchronized to the tempo in measure or beat units. Create Flanger with 4measure modulation or a dotted eighth note Delay. Make your club music explode with novel sounds.
2-way power from size AA batteries or AC adaptor
The unit will operate continuously for eight hours on a set of four IEC R6 (size AA) batteries. Whether on stage or during rehearsals in the studio, the RT-223 is always ready. For extended studio work, an AC adaptor can also be used.
440 preset patterns cover all musical styles
From Rock, Jazz, and Funk to Club and House, the RT-223 comes with 440 playing patterns that can be used straight away. A large number of phrase variations including intro, fill-in, and ending patterns are also provided. By simply combining these, you can whip up a backing rhythm that delivers the goods.


Touch-sensitive pads let you build original patterns
Programming your own patterns is a snap, thanks to the touch-sensitive drum pads. The RT-223 records not only your timing, but also the dynamics of your finger work. You can create and store up to 511 patterns. The process is made even easier through visual cues provided by the self-lit pads.


Drum Kits : 127(Factory : 70, Blank : 57 ) Drum Sounds : 213 Bass Programs : 12 Rhythm Patterns : 511(Factory : 440, Blank : 71 ) Songs : 100 Maximum Notes : 32,000 Polyphony : 18 Resolution : 96PPQN Tempo : 40-250BPM Sampling Frequency : 44.1kHz D/A Conversion : 24bit 8times over-sampling Drum Pads : 13(touch sensitive, self lighted ) MIDI : IN Control Input : Foot Switch Display : 128 segment custom LCD ( with backlight ) Line Input : 1/4" stereo phone jack(Input impedance : 10kW, Rated input level : -10dBm ) Line Output ( L/MONO, R ) : 2 x 1/4" phone jack(Output Impedance : 1kW or less, Rated output level : -10dBm ) Headphone Output : 1/8" stereo phone jack, 50mW into 32W load Power Requirements : AA size(LR6 ) battery x 4 or AC adaptor DC9V/ 300mA / Center minus type Battery Life : Approx. 8 hours(with alkaline batteries ) Dimensions : 217.9 ( W ) x 182.6 ( D ) x 35.5 ( H ) mm Weight : 680g (without batteries ) Optional Accessories : AD-0006 ( AC adaptor ), FS01 ( Foot switch ) , AA size battery *0dBm=0.775Vrms


2F, ITOHPIA Iwamotocho 2chome Bldg., 2-11-2 Iwamoto-cho,Chiyoda-ku, Tokyo 101-0032, Japan TEL: +81-3-5835-2206 FAX: +81-3-5835-2201 E-mail:
Specifications subject to change without notice. December 2004 Printed in Japan.



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