JOYO BSK-60 Acoustic Guitar Amplifier User Manual

BSK-60 ACOUSTIC GUITAR AMPLIFIER
User Manual

Thank you for purchasing this product!

Product introduction:

Thanks for purchasing JOYO BSK-60 acoustic guitar amplifier. BSK-60 amp is specially designed for acoustic guitar, its EQ curve is tailor-made for acoustic guitar, offering a nice and bright treble with rich mid-low frequencies; its 60W(RMS) power can meet your needs for a small live show or home practice. Compared with rivals’ similar products, its tone is stunning, with a built-in high—performance DSP chip, featuring several DSP digital effects(CHORUS, DELAY, REVERB, ANTI—FEEDBACK). Those DSP digital effects can be used simultaneously, which is rare from rivals’ similar products. Moreover, BSK-60 has a mic input channel, we’ve optimized the mic amplification circuit, say, the special frequency response for vocals, so the human voice signal becomes much clearer and stronger. Besides, the mic channel features an independent reverb effect, beautifying your singing. Like most guitar amps, BSK-60 has AUX IN jack, connecting the CD player, and MP3 to jam along or practice. Plus, it has LOOPER recording and playback functions, Bluetooth accompaniment function, LINK function, host function, LINE IN function, LINE OUT function, BALANCED OUT function, and DC OUT function(supplies power to pedals) (DC 9V/ 500mA). Besides, a footswitch pedal in synch with the main unit is attached in the packing list. SPECIAL NOTE: Should your BSK-60 Acoustic Guitar Amplifier ever require servicing, a Return Authorization (RA) number is necessary. Without this number, the unit will not be accepted. Please retain the original packing materials and call JOYO 0755-29765393 before you send them out, return the unit in its original carton and packing materials.

Features:

• Rated speaker power: 60Wrms
• Built-in lithium battery can be charged up for outdoor performance
• Built-in 9V/500mA DC output, for powering your gears such as effect pedals during an outdoor performance
• Dual channel for guitar and mic
• Independent mic Reverb and guitar Reverb effects
• 3 effects can be used simultaneously(CHORUS, DELAY with TAP TEMPO, and REVERB)
• Built-in anti-feedback function for guitar
• Built-in guitar signal phase inverter
• Quick mute function for you to better control the live performance
• Built—in LOOPER
• Bluetooth 4.0 for music playing
• Built-in the audio interface for connecting to a cell phone, you can use cell phone’s (i0S or some Android devices)audio effects app to beautify guitar tone
• Live recording output jack for cell phone live broadcasting
• LINE IN/LINE OUT for connecting to other amps
• XLR jack for connecting to the mixer
• JOY0 external footswitch pedal is included in the packing list, it can synchronize the host’s status

Detailed safety instructions:

• Use the attached power adapter only. It has passed strict tests and has safety certificates. If use other power adapters, it will increase noise, and damage the internal circuits or the built-in battery.
• Do not expose it to any damp areas such as the bathtub, toilet, washing—tub, sink, or swimming pool. Avoid spilling liquid substance into the product, otherwise, it will lead to malfunction or electric shock.
• Don’t use this product in places that are full of flammable and explosive gas, such as gas stations or dusty areas.
• Use BSK-60’s attached AC power adapter only! If you choose other adapters, they might not be compatible with BSK-60’s input voltage damage the unit, or worse.
• BSK-60’s attached adapter has passed the related electromagnetic compatibility tests and has safety certificates. If you use other power adapters, we’re not sure whether they meet your country or region’s compulsory safety certification standards.
• If the attached power adapter is broken, and you need to buy a new one, please make sure the polarity of the power source and maximum power are the same as the attached power adapter.
• In order to save energy, please unplug the power switch after use.
• Do not use alcohol or other cleaning fluids to clean this product, otherwise, it will damage the surface, use a clean dry cloth when necessary.
• Do not open the case for any reason, please contact professional maintenance men if it malfunctions, or contact your local retailer for maintenance.
• Do not pull the power cord or other parts of this product, so as not to damage the power cord and plugs.
• Please turn off this product and unplug it during a thunderstorm, lightning, or not in use for a long time.
• Do not collide, throw or vibrate this equipment.
• To protect the built-in battery, please have a full charge if it is not in use for a long time and ensure to charge it every 2 months.
• If it indicates a low battery, please charge it in time, as over-discharge and a low battery will cause irreversible loss to the battery capacity, and damage the battery.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from the tip—over.

Panel
Front panel/Footswitch pedal panel

Guitar Input Jack: 6.35mm

1. PHASE button: turn on or turn off phase—inverter function. If using an external footswitch pedal, this function can be operated from the pedal only, for details, please refer to the operation section of the footswitch pedal.
2. VOLUME: control(VOLUME) for guitar channel.
3. BASS: turn it counter—clockwise, the BASS will be turned down, turn it clockwise, and the BASS will be turned up.
4. MIDDLE: turn it counter-clockwise, and the MIDDLE will be turned down, turn it clockwise, and the MIDDLE will be turned up.
5. TREBLE: turn it counter-clockwise, and the TREBLE will be turned down, turn it clockwise, and the TREBLE will be turned up.
6. CHORUS: adjust the depth of CHORUS. If connects to the external footswitch pedal, this knob fails temporarily, you can only adjust the CHORUS effect parameter through the footswitch pedal.
7. REVERB: adjust the ratio of the dry and wet signals. If connects to the external footswitch pedal, this knob fails temporarily, you can only adjust the REVERB effect parameter through the footswitch pedal.
8. Delay time control: If connects to the external footswitch pedal, this knob fails temporarily, you can only adjust the delay parameter through the footswitch pedal, you can also set delay time through the TAP TEMP button.
9. TAP TEMPO button: you can set delay time by double clicking this button twice in a row.
10. SCAN button : auto feedback frequency searching button. For details, please refer to the operation section of the feedback suppressor.
11. ANTI—FEEDBACK knob: ANTI—FEEDBACK CONTROL knob. For details, please refer to the feedback suppressor operation section.
12. Mic Input Jack(INPUT): It’s a balanced signal input jack(XLR) for mic input
13. Mic’s volume control(MIC/VOLUME): adjust the mic channel’s volume.
14. Mic’s BASS : turn it counter-clockwise, and the BASS will be suppressed, turn it clockwise, and the BASS will
15. Mics TREBLE: turn it counter-clockwise, and the TREBLE will be suppressed, turn it clockwise the TREBLE will be boosted.
16. REVERB: adjust the mic’s reverb effect.
17. LOOPER Button: for record and playback. For details, please refer to the operation section of the built-in LOOPER.
18. Turn on and turn off Bluetooth function: long press the Bluetooth switch and turn on Bluetooth, then the Bluetooth indicator is on and flickering, you can connect to Bluetooth, the indicator is on, and can play music after the Bluetooth connection. Tap and hold the Bluetooth switch to turn off the Bluetooth connection, the Bluetooth indicator flickers, you can connect to Bluetooth. You can turn off the Bluetooth connection by long pressing the Bluetooth switch again.
19. LINK button and Jack(3.5mm TRRS): it can be used as a portable device’s audio jack, please connect the attached audio connecting cable to your cell phone, and make sure your cell phone has already downloaded an audio processing app such as JamUp, AmpliTube and more. Please note that the internal signal is transmitted to the cell phone after this switch is turned on, BSK-60 has no sound or noise if you press this switch when it doesn’t connect to external devices.
20. MASTER Volume Control: adjusting the unit’s volume.
21. MUTE button: turn on or turn off MUTE mode, this button fails temporarily if an external footswitch pedal is used, you can only control the MUTE button from the footswitch pedal.
22. Charging indicator, please refer to battery maintenance section for details.
23. Power: connects to AC100-240V adapter
24. Power switch(POWER ) : turn on or turn off the unit.
25. TO AMP Jack : connects to amp’s FOOTSWITCH jack.
26. PHASE INV/A.F. BACK SCAN switch: for details, please refer to connecting BSK-60 to the external footswitch pedal section.

1. DC IN Mains Input: connects to DC24V/2.5A adapter(center positive).
2. DC OUT Mains Output: DC9V/500mA mains output, supply power to pedal.
3. LINE OUT 2 Jack: tape recording signal output jack specially designed for cell phone live stream users, connects to cell phone, supplying BSK-60’s internal audio signal to a cell phone.
4. Connects to accompaniment input jack(AUX/INPUT): stereo headphone input jack(3.5mm ), for connecting to the external sound source, such as CD, MP3.
5. FOOTSWITCH Jack: connects to 6.35mm stereo jack footswitch.
6. PHONES Jack: for connecting Headphones with 6.35mm Jack. (supports headphones impedance above 32 Q )
7. LINE IN(6.35mm Jack): Line input jack, used for connecting to other device’s LINE OUT, or connecting to another BSK-60’s LINE OUT jack for expanding cascade.
8. LINE OUT(6.35mm Jack): Line output jack, used for connecting to other device’s LINE IN, or connecting to another BSK-60’s LINE IN jack for expanding cascade.
9. BALANCED OUT standard balanced output jack: supports balanced signal output, ensuring longer transmissiwistemthEtroguitasti—ibusnwogty. Accessories

Built-in LOOPER’s instructions

1. Record
   Press the LOOPER button when there is no recording data, LOOPER indicator becomes red and starts to record, press this button again if you want to stop recording, and the built-in LOOPER stops recording and switches to play status and the indicator becomes blue.

2. play
   You can press the LOOPER button while playing or dubbing, now the built-in LOOPER switches to play status, and the indicator becomes blue.

3. Dub,
   You can press the LOOPER button while playing, the built-in LOOPER switches to dub status, and now the indicator becomes red, you can press this button again when you finish dubbing, exit from dubbing, and back to play mode.

4. Stop
   You can tap the LOOPER button twice in a row while recording or dubbing, the built-in LOOPER switches to stop mode, and now the LOOPER goes out. Tap the LOOPER button again when it stops and back to play mode.

5. Revoke dubbing/Recover the dubbing
   If you’re not content with the quality of the parts just dubbed, you can press the LOOPER button for over 1 second while playing until the LOOPER indicator starts to flicker, the parts dubbed just now will be revoked, and the recording will be back to the last status, and back to play mode. If you want to cancel this revoke, press LOOPER and keep until the indicator flickers, then the recording been revoked will be recovered. Please note that only the most recent recording can be revoked or recovered.

6. Delete recording completely
   Double click the LOOPER button and keep it until the red indicator begins to flicker quickly, then release the button, and you can delete all the recordings completely.

7. Use the external footswitch pedal to control the LOOPER function
   Please refer to the instructions for connecting BSK-60 to the external footswitch pedal section.

Instructions for feedback suppressor

BSK-60 features an anti-feedback function, it reduces feedback to the maximum when the guitar produces feedback. You can turn on or adjust the feedback suppressor by the following methods:

1. Search for feedback frequency manually
   You can rotate ANTI—the FEEDBACK knob to turn it on and search for a suitable feedback frequency point manually, the feedback diminishes or disappears immediately once it reaches the suitable frequency point.

2. Auto—search feedback frequency
   You can activate BSK-60’s auto—search feedback frequency function by rotating ANTI—the FEEDBACK knob to the position of AUTO. Then ANTI—the FEEDBACK indicator starts to flicker and enter preparation status, you can tap the SCAN switch gently once and begin to search for frequency if there is feedback, ANTI—FEEDBACK indicator flickers at high speed, the indicator backs to flickering status if the frequency was successfully searched, the indicator flickers every second in low speed if it fails to search, now you can press SCAN button again and search for feedback frequency all over again, you can switch to manual mode to search for feedback frequency manually if it fails to search several times in a row.
   Note: BSK-60’s auto—searching speed for frequency is quite high, you might notice the indicator flashing quickly during the search, don’t worry, it’s normal.

3. Use the external footswitch pedal to operate the feedback suppressor You can use the external footswitch pedal to activate BSK-60’s feedback suppressor, please refer to BSK-60’s connection to the external footswitch pedal instruction section if activates through the external footswitch pedal anti-feedback function.
   Note: BSK-60’s anti-feedback automatically works to a certain degree, if you notice it doesn’t work whether you try to suppress the feedback manually or automatically. you can try the following methods to enhance the success ratio of anti-feedback:

1. Check up your channel’s gain or guitar output signal, make sure gain or volume are at a reasonable range.
   2 ) With the guitar’s built-in PHASE INVERTER (in case your guitar has a such function) or BSK-60’s PHASE INVERTER function, you can switch the signal’s phase so as to break the oscillating loop.
   3 ) Adjust the distance or direction of your guitar and amp,

The instructions for connecting BSK-60 to the external footswitch pedal

Note: when connecting BSK-60 to the external footswitch pedal, it doesn’t support hot plug and play, if you need to use the external footswitch pedal, please use the attached connecting cable to connect the main unit and footswitch pedal when BSK-60 is turned off.

Note: The related panel knobs or switches fail temporarily when the external footswitch pedal is connected, you can adjust some of BSK-60’s parameters through the footswitch pedal only.

1. Check up the connection of the footswitch pedal and main unit
   Firstly you’ve got to turn off the main unit, and then use the attached connecting cable to connect the main unit and footswitch pedal, and turn on the main unit. Once the power is on, there is a brief communication between the main unit and the footswitch pedal, to confirm each other has been connected, if successfully connected, all the indicators will flicker quickly 3 times, indicating the communication is established, now you can operate BSK-60 through footswitch pedal’s knobs and footswitch. If the footswitch pedal fails to connect to the main unit, all the indicators on the footswitch pedal flicker every second, indicating the communication fails to establish. Please check whether the cable is broken or the plug has been plugged into the socket completely or not.

2. The attached connecting cable for the footswitch pedal
   2 meters connecting cable is attached to the packing list for BSK-60, suitable for most venues. If the cable is not long enough, you can use the standard stereo audio cable of the same standard to replace the original one. Please note that the length of the cable shall not exceed 5 meters, and make sure it is of high quality and communication signals transfer smoothly. If the footswitch pedal cannot recognize the signal, you’d better shorten the cable’s length or replace a high-quality cable.

3. Instructions LOOPER switch:
   Tap the LOOPER footswitch to control the built-in LOOPER function, the operation is the same as the main unit panel’s operation, footswitch pedal’s indicator flickers according to the main unit( due to communication delay, it takes a little bit longer when you turn on the footswitch pedal’s indicator compared with that of main unit’s indicator ).
   ** The indicators on the panel and footswitch illumine or go out simultaneously when you tap it to turn on or turn off the mute function.
   PHASE INV / A.F.BACK SCAN switch:
   The PHASE INV / A.F.BACK SCAN switch is a multifunction control switch, for controlling the SIGNAL PHASE INVERTER and FEEDBACK suppressor, you can turn on the SIGNAL PHASE INVERTER by tapping this switch twice when the FEEDBACK suppressor is not turned on, PHASE INV indicator and main unit’s PHASE indicator will be on, indicating the signal has been inverted.
   Note: if the footswitch pedal’s FEEDBACK suppressor is turned on. PHASE INVERTER cannot be used temporarily, you can turn off and exit from the FEEDBACK suppressor first, and then operate it.**

Whether PHASE INVERTER is turned on or not, press and keep the PHASE INVIA.F.BACK SCAN switch,  the main unit turns on the FEEDBACK suppressing function and enter to auto—search mode, and won’t be controlled by the main unit’s ANTI—FEEDBACK knob. When ANTI—FEEDBACK is turned on, the footswitch pedal’s ANTI—F.BACK indicator flickers according to the main unit’s indicator, and enter to auto—search preparation status, tap PHASE INV / A.F.BACK SCAN switch to turn on feedback frequency search, ANTI—F.BACK indicator flickers quickly during the search, ANTI—F.BACK indicator back to slow—flicker status if searches successfully; ANTI—F.BACK indicator flickers every second if fails in search, now you can tap PHASE INV /A.F.BACK SCAN switch again to start searching for feedback frequency all over again. If you want to exit from and turn off the FEEDBACK suppressor, you need to tap and keep the PHASE INV / A.F.BACK SCAN switch and wait for ANTI—F. The BACK indicator goes out and then turns off and exit from the FEEDBACK suppressor.
Note: the panel’s ANTI—FEEDBACK knob will be shielded when the footswitch pedal is connected, you can not operate it manually, but realize the FEEDBACK suppressing function by auto—search through the footswitch pedal.
CHORUS/G—VERB/DELAY knobs
Those 3 knobs control the main unit guitar effects module’s CHORUS, REVERB, and DELAY effects, the operation is the same as that of the main unit panel.
M—VERB knob
This knob controls the mic channel’s reverb effect, the operation is the same as that of the main unit panel.
Bluetooth connection
BSK-60 has a built-in Bluetooth communication unit, so you can connect it to devices with a Bluetooth function for playing music. For detailed information, please refer to the instructions as below.

1. Long press the Bluetooth switch and turn on Bluetooth, the Bluetooth indicator is blue and flickers continuously.
2. Turn on the Bluetooth of the mobile device, find “BSK-60” from the device list, and match. When Bluetooth connects to BSK-60, then the Bluetooth indicator is on.
   PUT THE SUPPORT BRACKET IN BSK-60’S SUPPORT HOLE, SO YOU CAN PROP UP THE AMP WITH EASE.

Battery maintenance:

When the power indicator(POWER) changes from red to blue, it indicates that the battery needs to be charged. Please turn off the power switch (NO/OFF), then the power indicator goes out. Connect the attached power cable with an adapter and plug it into DC 24V/2.5A port. The battery indicator(BATTERY) is in yellow, indicating charging. It turns off automatically once fully charged.
Note: Please do not disconnect the power when it is charging, otherwise it will damage the battery. Please turn on the power switch and operate the unit if you need to use it during charging.

1. If your amp is not in use for a long time, make sure to charge the battery above 80%, the battery should be charged every two months to avoid battery aging.
2. When the power indicator (POWER) changes from red to blue, please charge it in time to protect the battery.
3. If the amp can only work for less than 1 hour after being fully charged (with normal use and maintenance), it’s time to replace the battery.

Parameters:
AC adapter input voltage: AC100-240V 50-60Hz
AC adapter output voltage: DC24V/2.5A
Battery’s specification: 18.5V/6.6Ah(lithium battery)
Guitar input sensitivity: —11.5dBV 1 MS2
Microphone input sensitivity: —41 dB 100KS2
AUX IN sensitivity: —11.5dBV 2.2KS2
LINE OUT 2 Jack output impedance: 4.71q2
Headphone output impedance: 3211
LINE IN Jack input impedance: 10KQ
LINE OUT Jack output impedance: 10KS2
BALANCED OUT Jack output impedance: 1KQ
RMS: 60W
Bass unit: 10 inches, 452, 70W
Treble Unit: 3 inches, 452, 30W
Pedal—Guitar channel: CHORUS, DELAY(The maximum is 500ms), REVERB
Pedal—MIC channel: REVERB Dimensions:50x29x37.5cm
Weight:14.2kg
Package content:
BSK-60 x1
Power adapter x 1
Power cord x 1
Footswitch pedal x 1
6.35mm footswitch pedal connecting cable x 1
3.55mm TRRS audio cable x 1
User manual x 1

JOYO TECHNOLOGY CO., LTD
Address: 2/F, Lushi Industry Building, 28th District, Baoan, Shenzhen, 518101 China.
www.joyoaudio.com Email:info@joyoaudio.com Tel: 0086-755-29765381

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