STOCKWELL II - PORTABLE STEREO LOUDSPEAKER
USER MANUAL
LEGAL & TRADEMARK NOTICE
• Design of device and packaging are intellectual properties of Zound Industries International AB and Marshall Amplication Plc. © All Rights
Reserved. Zound Industries International AB is hereinafter referred to as “Zound Industries” or “manufacturer”.
• MARSHALL, Marshall Amps, their respective logos, “Marshall” and “Marshall” trade dress are trademarks and intellectual property of Marshall
Amplication Plc and may not be used without permission. Permission granted to Zound Industries.
• Qualcomm aptX is a product of Qualcomm Technologies International, Ltd. Qualcomm is a trademark of Qualcomm Incorporated, registered in
the United States and other countries, used with permission. aptX is a trademark of Qualcomm Technologies International, Ltd., registered in
the United States and other countries, used with permission.
• The Bluetooth® wordmark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Zound
Industries is under license.
• All other trademarks are the property of their respective owners and may not be used without permission.
• For more legal information related to this product and to its use in your specic region, and for more detailed information about Zound Industries
and partner & license information, please visit the website: www.marshallheadphones.com. The user is recommended to visit the website
regularly for up-to-date information.
Zound Industries International AB, Centralplan 15, 111 20 Stockholm, Sweden
DISCLAIMER
For use with mobile devices using 3.5 mm jack unprotected two-way standard.
Stated play time is calculated using random selection of music, played at medium volume.
The information contained herein is correct at the time of publication, with reservation for editorial errors. Compatibility with future versions
of this product is not guaranteed.
002.002.
INDEX
ENGLISH
SECTIONS
PAGE
002. LEGAL & TRADEMARK NOTICE
002. DISCLAIMER
004. BOX CONTENTS
005. GENERAL DESCRIPTION
007. ATTACHING THE CARRY STRAP
008. CHARGING THE INTERNAL BATTERY
009. TURNING THE STOCKWELL II ON/OFF
010. CONNECTION ALTERNATIVES
011. CONNECTING VIA Bluetooth (PAIRING)
012. CONNECTING VIA AUX INPUT
013. CHOOSING AN AUDIO SOURCE
014. ADJUSTING THE VOLUME/BASS/TREBLE
015. STANDBY MODE
016. CHARGING A DEVICE FROM THE SPEAKER
017. TECHNICAL INFORMATION
018. TROUBLESHOOTING
003.
BOX CONTENTS
001. MARSHALL STOCKWELL II PORTABLE STEREO LOUDSPEAKER
002. DETACHABLE CARRY STRAP
003. USB-C POWER LEAD
004. QUICK START GUIDE
005. IMPORTANT SAFETY INSTRUCTIONS
001.
002.
004.
003.
005.
004.
GENERAL DESCRIPTION
001. Bluetooth® BUTTON
002. POWER/VOLUME KNOB
003. BASS KNOB
004. TREBLE KNOB
005. BATTERY LEVEL INDICATOR
006. FRONT DRIVER
001.
002.
003.
004.
005.
005.
006.
GENERAL DESCRIPTION CONTINUED
007. CARRY STRAP
008. REAR DRIVER
009. USB-C POWER INPUT/OUTPUT CONNECTOR
010. AUX INPUT FOR 3.5 mm JACK
007.
008.
009.
010.
006.
ATTACHING THE CARRY STRAP
THE STOCKWELL II FEATURES A DETACHABLE CARRY STRAP FOR EASY
PORTABILITY.
001. POSITION THE HOLE IN THE CARRY STRAP OVER THE PIN ON THE SIDE
OF THE SPEAKER.
002. GENTLY WORK THE STRAP AROUND THE PIN UNTIL IT IS FASTENED
INTO POSITION.
003. REPEAT THE PROCEDURE ON THE OPPOSITE SIDE OF THE SPEAKER.
001.
POW
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002.
003.
007.
NOTE: ENSURE THAT THE CARRY STRAP
IS SECURELY FASTENED ON BOTH SIDES
BEFORE USE.
CHARGING THE INTERNAL BATTERY
STOCKWELL II IS EQUIPPED WITH AN INTERNAL BATTERY, CAPABLE OF
MORE THAN 20 HOURS OF PLAYTIME AT MID VOLUME. FOR OPTIMISED
CHARGING, USE A 12 V, 3 A ADAPTER (NOT INCLUDED). THE STOCKWELL II
WILL CONTINUE CHARGING WHEN TURNED OFF OR IN STANDBY MODE.
001. CONNECT THE USB LEAD TO THE USB-C CONNECTOR ON THE SIDE OF
OF THE SPEAKER AND THE OTHER END TO A USB POWER SOURCE.
002. THE BARS ON THE BATTERY LEVEL INDICATOR WILL DISPLAY A RISING
ANIMATION DURING CHARGING.
003. THE BATTERY IS FULLY CHARGED WHEN THE ANIMATION STOPS AND
ALL THE BARS REMAIN LIT.
001.
NOTE: THE INDICATOR IS DIMMED DURING NORMAL OPERATION TO SAVE BATTERY POWER .
TURNING ANY KNOB WILL MAKE THE INDICATOR LIGHT UP.
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002.
003.
008.
AUX
TURNING THE STOCKWELL II ON/OFF
THE VOLUME CONTROL ALSO TURNS THE STOCKWELL II ON AND OFF.
001. TURN THE VOLUME KNOB CLOCKWISE TO THE DESIRED VOLUME AND
THE SPEAKER TURNS ON.
002. THE BATTERY LEVEL INDICATOR SHOWS THE BATTERY CHARGE.
003. TO TURN THE SPEAKER OFF, TURN THE VOLUME KNOB FULLY COUNTER-
CLOCKWISE UNTIL YOU HEAR A CLICK.
ALL INDICATORS TURN OFF.
CAUTION: MAKE SURE THE VOLUME IS
SET TO LOW ON BOTH THE SPEAKER AND
THE AUDIO SOURCE BEFORE USING THE
SPEAKER.
001.
002.
003.
009.
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CONNECTION ALTERNATIVES
YOU CAN CONNECT UP TO THREE AUDIO SOURCES TO THE STOCKWELLII
SIMULTANEOUSLY, UP TO TWO BLUETOOTH DEVICES AND ONE AUX DEVICE.
THE STOCKWELL II DETECTS WHEN A CONNECTED AUDIO DEVICE STARTS
PLAYING, AND MAKES IT THE SELECTED INPUT SOURCE.
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010.
CONNECTING VIA Bluetooth (PAIRING)
THE STOCKWELL II CAN BE CONNECTED TO TWO Bluetooth DEVICES AT THE
SAME TIME. WHEN TWO Bluetooth DEVICES ARE CONNECTED, PLAYING ONE
WILL PAUSE THE OTHER.
001. PUSH AND HOLD THE Bluetooth BUTTON FOR 2 SECONDS, UNTIL THE
Bluetooth INDICATOR STARTS TO BLINK.
002. WITH Bluetooth ENABLED ON YOUR DEVICE (SMARTPHONE, TABLET,
COMPUTER), SELECT STOCKWELL II FROM THE Bluetooth LIST AND
ACCEPT PAIRING.
003. THE Bluetooth INDICATOR ON THE SPEAKER STOPS BLINKING AND
REMAINS LIT WHEN THE UNITS ARE CONNECTED
004. PRESS PLAY ON YOUR AUDIO DEVICE.
THE STOCKWELL II WILL REMEMBER THE LAST 8 PAIRED Bluetooth
DEVICES. WHEN MULTIPLE PAIRED DEVICES ARE IN RANGE, THE SPEAKER
WILL ATTEMPT TO CONNECT TO THEM IN THE ORDER THEY WERE MOST
RECENTLY USED, UNTIL TWO DEVICES ARE CONNECTED.
001.
2s
002.
STOCKWELL II
003.
011.
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CONNECTING VIA AUX INPUT
001. CONNECT A 3.5 mm STEREO JACK TO THE INPUT LABELLED AUX ON
THE SIDE OF THE SPEAKER.
002. CONNECT THE OTHER END OF THE LEAD TO THE AUDIO OUTPUT ON
YOUR AUDIO DEVICE.
003. PRESS PLAY ON YOUR AUDIO DEVICE.
001.
NOTE: AUDIO CABLES
ARE NOT INCLUDED WITH
THE STOCKWELL II.
002.
AU
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012.
CHOOSING AN AUDIO SOURCE
001. PRESS PLAY ON ANY CONNECTED DEVICE TO MAKE IT THE SELECTED
AUDIO SOURCE. IF ANOTHER
Bluetooth
DEVICE IS ALREADY PLAYING,
IT WILL PAUSE AUTOMATICALLY.
002. PUSHING THE Bluetooth BUTTON ALSO TOGGLES BETWEEN CONNECTED
DEVICES.
002.001.
013.
POWER
n/OUT
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ADJUSTING THE VOLUME/BASS/TREBLE
THE STOCKWELL II INCLUDES THREE KNOBS FOR ADJUSTING THE AUDIO.
001. VOLUME KNOB
002. BASS KNOB
003. TREBLE KNOB
001.
002.
003.
001. 002. 003.
NOTE: THE VOLUME KNOB IS
ALSO THE ON/OFF SWITCH.
014.
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STANDBY MODE
IF THE STOCKWELL II IS LEFT UNUSED FOR 10 MINUTES, THE SPEAKER
ENTERS STANDBY MODE TO SAVE BATTERY CHARGE. IN STANDBY MODE ALL
BATTERY INDICATORS ARE OFF AND THE SPEAKER NO LONGER RESPONDS
TO INPUT FROM ATTACHED DEVICES.
001. QUICKLY PUSH THE Bluetooth BUTTON TO WAKE THE STOCKWELL II
FROM STANDBY MODE.
001.
015.
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CHARGING A DEVICE FROM THE SPEAKER
YOU CAN USE THE USB-C INPUT ON THE SIDE OF THE STOCKWELL II TO
CHARGE YOUR PHONE, TABLET OR OTHER COMPATIBLE DEVICE. A LEAD
WITH USB-C CONNECTOR AND A SUITABLE CONNECTOR FOR YOUR DEVICE IS
REQUIRED (NOT INCLUDED). THE STOCKWELL II MUST BE TURNED ON AND
HAVE A BATTERY CHARGE OF MORE THAN 2 BARS TO CHARGE AN EXTERNAL
DEVICE.
001. ENSURE THAT THE SPEAKER BATTERY IS CARRYING A CHARGE.
002. CONNECT THE USB-C END OF THE LEAD TO THE SPEAKER.
003. CONNECT THE OTHER END TO YOUR DEVICE.
NOTE: CHARGING EXTERNAL DEVICES
FROM YOUR SPEAKER WILL REDUCE
PLAYBACK TIME.
001.
003.
002.
016.
TECHNICAL INFORMATION
ACOUSTIC SPECIFICATION
• PORTABLE STEREO LOUDSPEAKER WITH BASS REFLEX SYSTEM
• DIGITAL CLASS D AMPLIFIERS: 1 X 10 W + 2 X 5 W
• 2" FULL RANGE DRIVERS: X 2
• 3" WOOFER: 1X
• BASS AND TREBLE TONE CONTROLS
• FREQUENCY RESPONSE: 60–20,000 Hz ±6 dB
• MAXIMUM SOUND PRESSURE LEVEL: 80 dB SPL @ 1 m
CONNECTIVITY
• BLUETOOTH®: Bluetooth 5.0
• AUX: 3.5 mm stereo jack
TECHNICAL INFORMATION
• POWER INPUT: 5-12 V USB-C
• SIZE: 179.5 X 161 X 70.1 mm
• WEIGHT: 1.38 kg
BATTERY
• BATTERY TYPE: Built-in, rechargeable Li-ion battery
• PLAYTIME: 20+ h
• CHARGING TIME: 2.5 h
BACKFRONT
017.
NOTE: THIS ILLUSTRATION IS ONLY INTENDED TO SHOW
THE INTERNAL SPEAKER LAYOUT. ATTEMPTING TO
REMOVE THE FRONT OR REAR GRILLE WILL RESULT IN
DAMAGE.
TROUBLESHOOTING
PROBLEM CAUSE ACTION
THE STOCKWELL II
DOES NOT TURN ON.
THERE IS NO AUDIO
CANNOT CONNECT
OR PAIR WITH A
Bluetooth
DEVICE
The battery is discharged. Connect the USB-C lead to
the Stockwell II and a USB
power adapter.
The wrong audio source is
selected.
Volume is set too low on
either the audio source or the
speaker.
Bluetooth is not enabled on
your device (smartphone,
tablet, computer).
There are already two devices
connected to the speaker.
Ensure that the device is
connected to the Stockwell II.
Check that no other
connected device is playing.
Slightly increase the volume
on your audio source or the
speaker.
Activate Bluetooth on your
device.
Disconnect one of the
connected Bluetooth devices
before connecting to the
speaker.
The speaker is not in pairing
mode.
Your device prompts you for a
pin code.
Push and hold the Bluetooth
button for 2 seconds to make
the speaker discoverable by
the device.
In most cases, no pin code
(password) is needed. If a pin
code is requested, use the
pin code 0000 .
018.
TROUBLESHOOTING
PROBLEM CAUSE ACTION
THE SPEAKER IS NOT
RESPONDING
Bluetooth
CONNECTION DROPS
OUT
A software problem has
occurred.
The Bluetooth device and the
speaker are too far apart or the
connection is affected due to
obstacles.
1. Turn the speaker off by
turning the volume knob
counter-clockwise until you
hear a click.
2. Wait 15 seconds, then turn
the speaker on again.
Push and hold the Bluetooth
button for 6 seconds to
reset the speaker to default
settings.
Note: After this reset the
speaker will forget all
Bluetooth pairings.
Move the devices closer
so that they are within 10
metres, and unobstructed by
obstacles such as walls or
doors.
There is a strong electric field
surrounding the Stockwell II.
Items such as microwave
ovens, wireless network
adapters, fluorescent lights
and gas cookers use the
same frequency range
as the Bluetooth device.
This may lead to electrical
disturbances.
019.
TROUBLESHOOTING
PROBLEM CAUSE ACTION
THERE IS A
CRACKLING SOUND
THE AUDIO IS
DISTORTED
The amplifier is clipping as it
has run out of output power.
Volume is set too high on the
audio source.
The audio stream or audio file
is of poor quality.
Volume is set too high on the
Stockwell II.
Too much bass/treble on the
speaker.
Decrease the volume on your
audio source.
Decrease the volume or bass
on the Stockwell II.
Decrease the playback
volume on the audio source.
Try another audio file or
music player.
Decrease the volume on the
speaker.
Decrease the bass/treble on
the speaker.
ERRATIC
PERFORMANCE
NOTES:
A Bluetooth DEVICE COULD CAUSE AUDIO-RELATED OR TECHNICAL FAULTS, DEPENDING ON USE, IN THE FOLLOWING
CASES:
• WHEN SOME PART OF THE BODY IS IN CONTACT WITH THE RECEIVING/TRANSMITTING SYSTEM FOR THE Bluetooth
• ELECTRICAL VARIATIONS DUE TO OBSTACLES IN THE FORM OF WALLS, CORNERS, ETC.
• EXPOSURE TO ELECTRICAL DISRUPTIONS FROM DEVICES WITHIN THE SAME FREQUENCY BAND, FOR EXAMPLE
THIS WIRELESS DEVICE MAY CAUSE ELECTRICAL DISRUPTIONS DURING USE.
Interference from another
electronic device.
DEVICE OR THE STOCKWELL II.
MEDICAL EQUIPMENT, MICROWAVE OVENS AND WIRELESS NETWORKS.
Move the Stockwell II to
another spot.
Turn off or move the
interfering electronic device.
020.
WWW.MARSHALLHEADPHONES.COM
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