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BK-37 Mini Black, BK-37 Mini Blue
User Manual
Keyboard
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Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
Internet: www.thomann.de
26.07.2023, ID: 524511, 571267 (V2)
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Table of contents
Table of contents
1 General information................................................................................................................................. 6
1.1 Further information........................................................................................................................... 7
1.2 Notational conventions.................................................................................................................... 7
1.3 Symbols and signal words............................................................................................................... 8
2 Safety instructions.................................................................................................................................. 10
3 Features....................................................................................................................................................... 13
4 Assembly instructions........................................................................................................................... 14
5 Operating elements............................................................................................................................... 17
6 Connection options................................................................................................................................ 20
7 Operating.................................................................................................................................................... 21
7.1 Powering up the keyboard........................................................................................................... 21
7.1.1 Automatic shuto........................................................................................................................ 21
7.2 Setting overall volume................................................................................................................... 22
7.3 Octaving.............................................................................................................................................. 22
7.4 Transposing........................................................................................................................................ 23
7.5 Sustain eect..................................................................................................................................... 23
7.6 Selecting a song............................................................................................................................... 24
7.7 Rhythm selection............................................................................................................................. 25
7.8 Selecting a sound............................................................................................................................. 26
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Table of contents
7.9 Metronome......................................................................................................................................... 27
7.10 Functions menu............................................................................................................................. 27
7.10.1 Tempo............................................................................................................................................ 28
7.10.2 Volume........................................................................................................................................... 29
7.10.3 Metronome time signature.................................................................................................... 30
7.10.4 Song melody................................................................................................................................ 31
7.10.5 Synchronous start function.................................................................................................... 32
7.10.6 Automatic shuto...................................................................................................................... 33
7.10.7 Fine tuning................................................................................................................................... 34
8 Song list........................................................................................................................................................ 35
9 Rhythm list.................................................................................................................................................. 36
10 Sound list..................................................................................................................................................... 39
11 Troubleshooting...................................................................................................................................... 42
12 Technical specications....................................................................................................................... 43
13 Protecting the environment.............................................................................................................. 45
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General information
1 General information
This user manual contains important information on the safe operation of the device. Read and
follow all safety notes and all instructions. Save this manual for future reference. Make sure
that it is available to all persons using this device. If you sell the device to another user, be sure
that they also receive this manual.
Our products and user manuals are subject to a process of continuous development. We there‐
fore reserve the right to make changes without notice. Please refer to the latest version of the
user manual which is ready for download under
www.thomann.de.
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1.1 Further information
General information
On our website (
following points:
1.2 Notational conventions
This manual uses the following notational conventions:
www.thomann.de) you will nd lots of further information and details on the
Download This manual is also available as PDF le for you to download.
Keyword search
Online guides
Personal consultation For personal consultation please contact our technical hotline.
Service
Use the search function in the electronic version to nd the topics of
interest for you quickly.
Our online guides provide detailed information on technical basics
and terms.
If you have any problems with the device the customer service will
gladly assist you.
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General information
Letterings
Instructions
Cross-references
The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
The individual steps of an instruction are numbered consecutively. The result of a step is
indented and highlighted by an arrow.
Example:
1. Switch on the device.
2. Press [Auto].
3. Switch o the device.
References to other locations in this manual are identied by an arrow and the specied page
number. In the electronic version of the manual, you can click the cross-reference to jump to
the specied location.
Example: See
1.3 Symbols and signal words
Automatic operation is started.
ð
Ä
‘Cross-references’ on page 8.
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In this section you will nd an overview of the meaning of symbols and signal words that are
used in this manual.
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General information
Signal word Meaning
DANGER! This combination of symbol and signal word indicates an
immediate dangerous situation that will result in death or
serious injury if it is not avoided.
CAUTION! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in minor injury if it
is not avoided.
NOTICE! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in material and
environmental damage if it is not avoided.
Warning signs Type of danger
Warning – danger zone.
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Safety instructions
2 Safety instructions
Intended use
Safety
DANGER!
Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are not within reach of babies and young children. Choking
hazard! Ensure that children do not detach any small parts (e.g. knobs or the like) from the unit. They could swallow the pieces and
choke! Never let children unattended use electrical devices.
CAUTION!
Possible hearing damage
The device can produce volume levels that may cause temporary or permanent hearing impairment. Over an extended period of
time, even levels that seem to be uncritical can cause hearing damage. Decrease the volume level immediately if you experience
ringing in your ears or hearing impairment. If this is not possible, keep a greater distance or use sucient ear protectors.
This device is intended to be used for electronic sound generation using a piano keyboard. Use
the device only as described in this user manual. Any other use or use under other operating
conditions is considered to be improper and may result in personal injury or property damage.
No liability will be assumed for damages resulting from improper use.
This device may be used only by persons with sucient physical, sensorial, and intellectual
abilities and having corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is responsible for their safety.
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Safety instructions
CAUTION!
Possible hearing damage
Using headphones for a prolonged period and at high volume can cause hearing damage. Avoid using the device at high volume,
especially when using headphones.
NOTICE!
Operating conditions
This device has been designed for indoor use only. To prevent damage, never expose the device to any liquid or moisture. Avoid
direct sunlight, heavy dirt, and strong vibrations. Only operate the device within the ambient conditions specied in the chapter
‘Technical specications’ of this user manual. Avoid heavy temperature uctuations and do not switch the device on immediately
after it was exposed to temperature uctuations (for example after transport at low outside temperatures). Dust and dirt inside can
damage the unit. When operated in harmful ambient conditions (dust, smoke, nicotine, fog, etc.), the unit should be maintained by
qualied service personnel at regular intervals to prevent overheating and other malfunction.
NOTICE!
External power supply
The device can be powered by an external power supply. Before connecting an external power supply, ensure that the input voltage
(AC outlet) matches the voltage rating of the device and that the AC outlet is protected by a residual current circuit breaker. Failure
to do so could result in damage to the device and possibly the user. Unplug the external power supply before electrical storms occur
and when the device is unused for long periods of time to reduce the risk of electric shock or re.
NOTICE!
Risk of re due to incorrect polarity
Incorrectly inserted batteries may destroy the device or the batteries. Ensure that proper polarity is observed when inserting bat‐
teries.
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Safety instructions
NOTICE!
Possible damage by leaking batteries
Leaking batteries can cause permanent damage to the device. Take batteries out of the device if it is not going to be used for a
longer period.
NOTICE!
Possible staining
The plasticiser contained in the rubber feet of this product may possibly react with the coating of your surface and after some time
cause permanent dark stains. In case of doubt, do not put the rubber feet directly on the surface and use a suitable underlay if neces‐
sary, i.e. felt pads or similar.
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3 Features
Features
The keyboard is characterized by the following features:
n 37 mini keys
n 100 sounds
n 100 rhythms
n 30 songs
n 32-voice polyphony
n Metronome
n Song Melody On/O, Rhythm Sync-Start
n Transpose and octave functions
n Automatic shuto, deactivatable
n Built-in speakers
n Connections: 1 × headphones output, 1 × USB-C (for power supply only)
n USB-C cable included
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Assembly instructions
4 Assembly instructions
Unpack and check carefully there is no transportation damage before using the unit. Keep the
equipment packaging. To fully protect the product against vibration, dust and moisture during
transportation or storage use the original packaging or your own packaging material suitable
for transport or storage, respectively.
Set up the device in the desired location.
Voltage supply
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The device can be operated via the supplied USB-C cable with 5 V or with 4 × batteries (AA).
Remove the batteries or rechargeable batteries from the device when using the USB-C
cable or remove the USB-C cable when using batteries.
NOTICE!
Possible damage by leaking batteries
Leaking batteries can cause permanent damage to the device.
Take batteries out of the device if it is not going to be used for a longer period.
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Assembly instructions
NOTICE!
Risk of re due to incorrect polarity
Incorrectly inserted batteries may destroy the device or the batteries.
Ensure that proper polarity is observed when inserting batteries.
Batteries are not charged in the device.
Connecting the USB-C cable
1. Make sure that the device is turned o before you connect it to the power supply or dis‐
connect it.
2. Turn the volume control counterclockwise to minimum before connecting the USB-C
cable and turning the keyboard on. This is to protect the speakers from damage.
3.
Connect a USB-C cable to the socket on the back of the keyboard.
4. Connect the plug of the USB-C cable via a commercially available USB power supply unit
to a properly grounded power socket.
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Assembly instructions
Inserting batteries
1. Make sure that the device is switched o before inserting or replacing batteries.
2. Turn the volume control counterclockwise to minimum before inserting batteries and
turning the keyboard on. This is to protect the speakers from damage.
3. Open the battery compartment cover on the underside of the device and insert four AA
size batteries. Pay attention to the correct polarity.
Always use batteries of the same type and do not use new and used batteries at the
same time.
4. Reattach the battery compartment cover and snap it into place.
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5 Operating elements
[[[
ö
#
$
% & '
+ , -
( ) *
.
Operating elements
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Operating elements
1 [POWER] | button to turn the keyboard on and o
2 [VOLUME] | rotary control to adjust the overall volume
3 Display
4 [OCTAVE] | button to activate the octave function
5 [TRANSPOSE] | button to activate the transpose function
6 [SUSTAIN] | button to activate / deactivate the Sustain eect
7 [SONG] | button to call up the song mode
8 [RHYTHM] | button to call up the rythm mode
9 [SOUND] | button to call up the sound mode
10 [METRONOME] | button to activate / deactivate the metronome
11 [–]/[+] | buttons for setting a value or parameter
12
13 [0]…[9]
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| button to start / stop the currently selected song or rhythm
Sound mode: Buttons for activating the sound categories Press the button repeatedly to switch between the
sounds of the respective sound category.
Song and rhythm mode: Numeric buttons for direct selection of a song or rhythm. For one- and two-digit numbers,
enter the numbers and wait until they are detected by the keyboard.
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C1 D1 E1 F1 G1 A1 B1
C#1 D#1 F#1 G#1 A#1
C2 D2 E2 F2 G2 A2 B2
C#2 D#2 F#2 G#2 A#2
C3 D3 E3 F3 G3 A3 B3 C4
C#3 D#3 F#3 G#3 A#3
Operating elements
Keyboard
Some settings are made using the keyboard. The keyboard keys are referred to in this manual
as shown below.
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Connection options
6 Connection options
Headphones
You will nd the headphone output on the back of the keyboard.
Connecting headphones (not supplied) to the outputs mutes the speakers.
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7 Operating
7.1 Powering up the keyboard
1. Press [POWER] to turn the keyboard on.
2. Press [POWER] again to turn the keyboard o.
7.1.1 Automatic shuto
If the keyboard is not used for the set time (standard setting: 30 minutes), it switches itself o
automatically to avoid unnecessary power consumption. By default, the automatic switch-o
is activated.
You can deactivate the automatic switch-o or set the desired time for the keyboard to switch
o automatically in the function menu (see
The keyboard is operational.
ð
Operating
Ä
Chapter 7.10.6 ‘Automatic shuto’ on page 33).
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Operating
7.2 Setting overall volume
7.3 Octaving
Use the [VOLUME] rotary control to set a comfortable volume for playback and practising.
1. Turn the [VOLUME] rotary control clockwise to increase the volume.
2. Turn the [VOLUME] rotary control counter-clockwise to decrease the volume.
With this function you can octave the keyboard up or down.
1. Press [OCTAVE] to activate the transpose function.
2. Press [–] or [+] to octave the keyboard up or down.
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7.4 Transposing
7.5 Sustain eect
Operating
With this function you can adjust the pitch of the keyboard in semitone steps (12 at max.) up or
down.
1. Press [TRANSPOSE] to activate the transpose function.
2. Press [–] or [+] to adjust the pitch of the keyboard in 6 semitone steps up or in 6 semi‐
tone steps down.
This function allows you to add a sustain eect to the sounds. This way you can make your
playing more expressive and let tones linger after you lift your ngers from the keys of the key‐
board.
1. Press [SUSTAIN] to activate the Sustain eect.
2. Press [SUSTAIN] again to deactivate the Sustain eect.
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Operating
7.6 Selecting a song
The keyboard oers 30 songs in total. The built-in songs show the sound and the pitch range
of the instrument.
1. Press [SONG] to activate the song mode.
2.
Press [–] or [+] to select a desired song (see
The display shows the current song number.
ð
3. Alternatively, you can select the desired song with [0]…[9].
For one- and two-digit numbers, enter the numbers and wait until they are detected by
the keyboard.
4.
Press to play the selected song. Press again to stop playback.
Ä
Chapter 8 ‘Song list’ on page 35).
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7.7 Rhythm selection
The keyboard oers 100 rhythms in total.
1. Press [RHYTHM] to activate the rhythm mode.
2.
Press [–] or [+] to select a desired rhythm (see
The display shows the current rhythm number.
ð
3. Alternatively, you can select the desired rhythm with [0]…[9].
For one- and two-digit numbers, enter the numbers and wait until they are detected by
the keyboard.
4.
Press to play the selected rhythm. Press again to stop playback.
Ä
Chapter 9 ‘Rhythm list’ on page 36).
Operating
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Operating
7.8 Selecting a sound
The keyboard oers 100 sounds in total.
1. Press [SOUND] to activate the Sound mode.
2.
Press [–] or [+] to select a desired sound category (see
on page 39). Press the button repeatedly to switch between the sounds of the respec‐
tive sound category.
The display shows the current sound number.
ð
3. Alternatively, you can select the desired sound category with [0]…[9]. Press the button
repeatedly to switch between the sounds of the respective sound category.
Ä
Chapter 10 ‘Sound list’
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7.9 Metronome
C1 D1
C#1
7.10 Functions menu
1. Press [METRONOME] to enable the metronome.
2. Press [METRONOME] again to disable the metronome.
Volume, time signature and metronome tempo can be set in the function menu (see
Ä
Chapter 7.10 ‘Functions menu’ on page 27).
This menu is used to set the various parameters oered by the keyboard.
Operating
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C3
Operating
7.10.1 Tempo
All preprogrammed songs, rhythms, and the metronome function are stored with certain
tempo information. You can adjust the tempo in a range from ‘30’ … ‘280’ .
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
ð
2. Additionally press the keyboard key [C3] to select the function for setting the tempo.
3. Release all keys and press [–] | [+] to set the tempo in increments of 1.
4. The setting is accepted immediately and the functions menu is closed approx. 5 seconds
after the last input.
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7.10.2 Volume
D3
Operating
The volume of the preprogrammed songs, rhythms and the metronome function can be set
within a range of ‘0’ … ‘15’ .
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
ð
2. Additionally press the keyboard key [D3] to select the function for setting the volume.
3. Release all keys and press [–] | [+] to set the volume in increments of 1.
4. The setting is accepted immediately and the functions menu is closed approx. 5 seconds
after the last input.
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E3
Operating
7.10.3 Metronome time signature
You can set the metronome time signature in a range from ‘0’ … ‘16’ .
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
ð
2. Additionally press the keyboard key [E3] to select the function for setting the time signa‐
ture.
ð
3. Release all keys and press [–] | [+] to set the time signature in increments of 1.
4. The setting is accepted immediately and the functions menu is closed approx. 5 seconds
after the last input.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
The display shows a number for the set time signature, e.g. 1 = 1/4, 2 = 2/4, 3 = 3/4
etc.
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7.10.4 Song melody
F3
Operating
You can switch the song melody track on or o for practising.
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
ð
2. Additionally press the keyboard key [F3] to activate or deactivate the song melody track.
Display ‘on’ The melody can be heard.
Display ‘o’ The melody can not be heard.
3. The setting is accepted immediately and the functions menu is closed approx. 5 seconds
after the last input.
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G3
Operating
7.10.5 Synchronous start function
All pre-programmed rhythms can be played using the sync start function. The rhythm does not
play until you play a note on the keyboard.
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
ð
2. Additionally press the keyboard key [G3] to activate or deactivate the sync start function.
ð
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
When the sync start function is activated, a point in the display ashes at the same
speed as the current rhythm.
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7.10.6 Automatic shuto
A3
B3
Operating
If the keyboard is not used for the set time (standard setting: 30 minutes), it switches o auto‐
matically. To turn it back on again, press [POWER].
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
ð
2. Additionally press the keyboard key [A3] repeatedly to set the time when the keyboard
switches o automatically (5 minutes, 10 minutes, 15 minutes, 30 minutes, 60 minutes,
120 minutes).
3. Additionally press the keyboard key [B3] to activate or deactivate the automatic shuto.
4. The setting is accepted immediately and the functions menu is closed approx. 5 seconds
after the last input.
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C4
Operating
7.10.7 Fine tuning
With this function you can ne tune the entire keyboard in 0.2 Hz steps.
1. Simultaneously press the keyboard keys [C1], [C#1] and [D1] to call up the functions
menu.
The keyboard produces a conrmation tone. The display shows ‘Eng’ .
ð
2. Additionally press the keyboard key [C4].
The display shows the current ne tuning, e.g. ‘00’ for no deviation from the
ð
standard.
3. Release all keys and press [–] | [+] to ne tune the keyboard. The value changes by 2
cents in a range from –50 to +50 per keystroke.
4. Press [–] | [+] simultaneously to reset the keyboard to the default value ‘00’ .
5. The setting is accepted immediately and the function menu is closed approx. 5 seconds
after the last input.
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Song list
8 Song list
No. Name No. Name No. Name
0 Turkish March 10 Fur Elise 20 Babylon River
1 Red River Valley 11 Katyusha 21 Polly Wolly Doodle
2 American Patrol 12 Minuet in G Major 22 Long Ago
3 Susanna 13 Espana Cani 23 Christmas Eve
4 Mozart Piano Sonata 14 Serenade 24 Hungarian Dance
5 Soprani Smile Polka 15 Yankee Doodle 25 Fountain
6 Jingle Bells 16 Rhythm of the Rain 26 Mary Had a Little Lamb
7 Radetzky March 17 Frosty the Snowman 27 Music Box Dancer
8 Mozart Sympnbony No. 40 18 Blue the Danube 28 Spring of the Four Seasons
9 Clap Your Hands 19 Little Brown Jig 29 Destinies
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Rhythm list
9 Rhythm list
No. Name No. Name No. Name
8 BEAT 12 16 Beat 7 26 R&B2
0 8 Beat 1 13 16 Accent 1 27 R&B3
1 8 Beat 2 14 16 Accent 2 ETHNIC
2 8 Beat 3 15 16 Ballad 1 28 Bolero
3 8 Beat 4 16 16 Ballad 2 29 Brit Rhumba 1
4 Dance 17 16 Funk 30 Brit Rhumba 2
5 Rock Dance 18 16 Ride 31 Calypso
16 BEAT 19 16 Rock 1 32 Ethnic Rock
6 16 Beat 1 20 16 Rock 2 33 Jorpo
7 16 Beat 2 21 16 Rock 3 34 Lambada
8 16 Beat 3 22 Funk 35 Mambo 1
9 16 Beat 4 23 Heavy Ballad 36 Mambo 2
10 16 Beat 5 24 Power Funk 1 37 March 1
11 16 Beat 6 25 R&B1 38 March 2
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No. Name No. Name No. Name
39 Merengue 1 LATIN 69 Power Samba 1
40 Oriental 1 54 8 Latin 70 Power Samba 2
41 Oriental 2 55 16 Latin 1 71 Power Samba 3
42 Polka 56 16 Latin 2 72 Rock Latin 1
43 Power Polka 57 16 Latin 3 73 Rock Latin 2
44 Rhumba 1 58 16 Latin 4 74 Salsa
45 Rhumba 2 59 16 Latin 5 75 Samba
46 Tango 60 Bossa 1 76 Soft Bossa
JAZZ 61 Bossa 2 SHUFFLE
47 Jazz Ride 1 62 Heavy Latin 1 77 6/8 Beat
48 Jazz Ride 2 63 Heavy Latin 2 78 6/8 Rock
49 Jazz Ride 3 64 Heavy Latin 3 79 Shuttle 1
50 Jazz Shuttle 1 65 Heavy Latin 4 80 Shuttle 2
Rhythm list
51 Jazz Shuttle 2 66 Heavy Latin 5 81 Shuttle 3
52 Jazz Waltz 1 67 Pop Samba 1 82 Shuttle 4
53 Jazz Waltz 2 68 Power Latin 1 83 Chamber Pop
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Rhythm list
No. Name No. Name No. Name
84 Ethnic Shuttle 1 TRIBAL 95 16 Tribal 5
85 Ethnic Shuttle 2 90 8 Tribal WALTZ
86 Ethnic Shuttle 3 91 16 Tribal 1 96 Waltz Ride
87 Ethnic Shuttle 4 92 16 Tribal 2 97 Power Waltz 1
88 Ethnic Shuttle 5 93 16 Tribal 3 98 Power Waltz 2
89 Latin Shuttle 94 16 Tribal 4 99 Power Waltz 3
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10 Sound list
No. Name No. Name No. Name
PIANO 12 Harmonica 24 French Horn
0 Acoustic Grand Piano STRINGS 25 Synth Brass 1
1 Bright Acoustic Piano 13 Violin WOODWIND
2 Honky-tonk Piano 14 Viola 26 Sax
3 Chorused Piano 15 Cello 27 Oboe
4 Harpsichord 16 Contrabass 28 English Horn
5 Clavichord 17 Pizzicato Strings 29 Bassoon
6 Metal Piano 18 Orchestral Harp 30 Clarinet
ORGAN 19 Electronic String Ensemble 31 Piccolo
7 Harnmond Organ BRASS 32 Flute
8 Percussive Organ 20 Trumpet 33 Bottle Blow
Sound list
9 Church Organ 21 Trombone 34 Ocarina
10 Reed Organ 22 Tuba 35 Bass Oboe
11 Accordian 23 Muted Trumpet
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Sound list
No. Name No. Name No. Name
GUITAR MALLET 63 Lead 2
36 Acoustic Guitar (nylon) 50 Celesta 64 Pad 1
37 Acoustic Guitar (steel) 51 Glockenspiel 65 Pad 2
38 Electric Guitar (Jazz) 52 Music box 66 Lead 3
39 Electric Guitar (clean) 53 Vibraphone 67 Psychedelic Synth Lead
40 Overdriven Guitar 54 Marimba 68 Vibraphone Synth Lead
41 Guitar Harmonics 55 Xylophone 69 Marimba Synth Lead
42 Acoustic Bass 56 Tubular Beils 70 Wind FX
43 Electric Bass (nger) 57 Tinkle Bell 71 Clarinet FX
44 Electric Bass (pick) 58 Agogo 72 Crystal FX
45 Fretless Bass 59 Woodblock 73 Environmental Lead
46 Slap Bass 1 SYNTH 74 Orchestra Lead
47 Slap Bass 2 60 Choir Aahs 75 Bass Lead
48 Synth Bass 1 61 Voice Oohs 76 East Nation Pad
49 Synth Bass 2 62 Lead 1
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No. Name No. Name No. Name
WORLD 85 Shanai 93 Rain
77 Dulcimer 86 Taiko Drum 94 Thunder
78 Shakuhachi SFX 95 Seashore
79 Sitar 87 Dog 96 Telephone Ring
80 Banjo 88 Cat 97 Helicopter
81 Shamisen 89 Cow 98 Applause
82 Koto 90 Horse 99 Gunshot
83 Kalimba 91 Bird Tweet
84 Bagpipe 92 Orchestra Hit
Sound list
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Troubleshooting
11 Troubleshooting
Problem Possible causes and solutions
You hear a 'pop' sound from the speakers when switching the
keyboard on and o.
No sound can be heard when playing the piano. Make sure that the volume control is set appropriately.
Interference occurs when using a cell phone. Using a mobile phone near the keyboard may cause interfer‐
Some notes on the keyboard sound wrong. Reset the tuning to the default setting and restart the device.
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This is normal. No reason for concern.
Check if headphones are connected to the headphone output.
Connecting headphones will mute the speakers of the key‐
board.
ence. To prevent this, turn o the mobile phone or use it only at
a safe distance.
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Technical specications
12 Technical specications
Input connections Power supply 1 × USB-C port
Output connections Headphones 1 × 3.5 mm jack socket, stereo
Keyboard 37 mini keys
Polyphony 32-voice polyphonic
Sounds 100
Rhythms 100
Songs 30
Eects Metronome, Sustain, Song Melody On/O, Rhythm Sync Start, Octaving, Trans‐
posing, Auto switch-o, Fine tuning
Speaker 1 × 1 W
Voltage supply USB-C, 5 V, 500 mA or
4 × AA battery, 1.5 V, operating time: 8 h max.
Dimensions (W × H × D) 545 mm × 95 mm × 245 mm
Weight 0.95 kg
BK-37 Mini Black, BK-37 Mini Blue
Keyboard
43
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Technical specications
Ambient conditions Temperature range 0 °C…40 °C
Relative humidity 20 %…80 % (non-condensing)
BK-37 Mini Black, BK-37 Mini Blue
44
Keyboard
Page 45
13 Protecting the environment
Disposal of the packaging mate‐
rial
For the transport and protective packaging, environmentally friendly materials have been
chosen that can be supplied to normal recycling.
Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose these materials with your normal household waste, but make sure that
they are fed to a recovery. Please follow the notes and markings on the packaging.
Disposal of batteries
Batteries must not be disposed of as domestic waste or thrown into re. Dispose of the bat‐
teries according to national or local regulations regarding hazardous waste. To protect the
environment, dispose of empty batteries at your retail store or at appropriate collection sites.
Protecting the environment
BK-37 Mini Black, BK-37 Mini Blue
Keyboard
45
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Protecting the environment
Disposal of your old device
This product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE) in its currently valid version. Do not dispose with your normal household waste.
Dispose this device through an approved waste disposal rm or through your local waste
facility. When discarding the device, comply with the rules and regulations that apply in your
country. If in doubt, consult your local waste disposal facility.
BK-37 Mini Black, BK-37 Mini Blue
46
Keyboard
Page 47
Page 48
Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de
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