Microlab B-77 User manual

Before using, please read the manual carefully
B-77
User Manual
Microlab Electronics Co.,Ltd
Made in China
All symbols and logo belong to the respective brand holder or registered holder. All specifications and information are subject to changes without
further notice. Slight variations and differences might appear between the printed photos and actual product due to product enhancement.
Bookshelf Stereo System
feel the difference

1
Important Safety Instructions
WARNINGS:
1. Read Instructions - All the safety and operating instructions must be read before the product is operated.
2. Retain Instructions - The safety and operating instructions should be kept product for future reference.
3. Heed warnings - All warnings on the product and in the operating instructions should be adhered to.
4. Follow instructions - All operating and user instructions should be followed.
5. Installation - Install in accordance with the manufacturer's instructions.
6. Power sources - This product should be operated only from the type of power source indicated by the marking adjacent to
the power cord entry. If you are not sure of the type of power supply to your home, consult your product dealer or local
power company.
7. Grounding or polarization - the is not required to be grounded. Ensure the plug is fully inserted into the wall outlet
or extension cord receptacle to prevent blade or pin exposure. Some versions of the product are equipped with a power
cord fitted with a polarized alternating line plug (a plug having one blade wide than the other). This plug will fit onto the
power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing
the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety
purpose of the polarized plug. When using an extension power-supply cord or a power-supply cord other than that
supplied with the appliance, it should be fitted with the appropriate molded plugs and carry safety approval appropriate to
the country of use.
8. Power cord protection - Power-supply cords should be routed so that they are not likely to be walked on, kinked or
pinched by items placed on or against them, paying particular attention to cords from plugs, receptacles and the point
where they exit from the appliance.
9. Overloading - Do not overload wall outlets, extension cords or multiple sockets, as this can result in a risk of fire or
electric shock.
10. Ventilation - The product must be properly ventilated. Do not place the product on a bed, sofa, or other similar surface. Do
not cover the product with any items such as tablecloths, newspapers, etc.
11. Heat - The product should be situated away from heat sources such as radiators, heaters, stoves, or other products,
including amplifiers that produce heat. No naked flame sources, such as lighted candles, should be placed on the
apparatus.
12. Water and moisture - To reduce the risk of fire or electric shock, do not expose the product to train, dripping, splashing or
excessive moisture such as in a sauna or bathroom. Do not use this product near waterfor example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool and the like.
13. Object and Liquid Entry - Never push objects of any kind into this product through openings, as they may touch
dangerous voltage points or short-circuit parts that could result in a fire or electric shock. Never spill liquid of any kind on
the product. Do not place any object containing liquid on top of the product.
14. Cleaning - Unplug the product from the wall outlet before cleaning. The cabinet of the subwoofer may be cleaned by
dusting with a dry cloth. If you wish to use an aerosol cleaning spray, do not spray directly on the cabinet; spray onto the
cloth. Be careful not to damage the drive units.
15. Attachments - Do not use attachments not recommended by the product manufactures, as they may cause hazards.
16. Accessories - Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing
serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket or table
recommended by the manufacturer or sold with the product. Any mounting of the product should follow the manufacturer's
instructions and should use a mounting accessory recommended by the manufacturer.
17. Moving the - A product and cart combination should be moved with care. Quick stops, excessive force and
uneven surfaces may cause the product and cart combination to overturn.
18. Unused periods - The power cord of the appliance should be unplugged from the outlet during lightning storms or when
the apparatus is left unused for a long period of time.
product
product
Caution:
To reduce the risk of electric shock, do not dismantle the product and do not expose the apparatus to rain or moisture. No
user-serviceable parts inside. Refer servicing to qualified personnel only.
The lightning flash within an equilateral triangle is intended to alert you to the presence of uninsulated dangerous voltage
within the product's enclosure that may be of sufficient magnitude to constitute an electric shock to a person or persons.
The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the product.
Explanation of Graphical Symbols:
2
19. Servicing - Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified service personnel.
20. Please remove the power plug form the main power source or wall power source when not in use. When plugged in to a
power source, the system is in standby mode, so the power is not entirely cut off.
21. Replacement parts - When replacement parts are required, ensure the service technician has used replacement parts
specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may
result in fire, electric shock or other hazards.
22. Mains fuses - For continued protection against fire hazard, use fuses only of the correct type and rating. The correct fuse
specification for each voltage range is marked on the product.
23. Do not turn up the volume while listening to a section with very low level inputs or no audio signals. If you do, the speaker
may be damaged when a peak level section is suddenly played.
24. The only means of completely disconnecting the product from the power supply is by removing the power cord from the
wall outlet or the product. The wall outlet or the power cord entry to the product must remain freely accessible at all times
while the product is in use.
25. Try to install the product near a wall socket or extension cord and shall be easily accessible.
26. The highest environmental temperature suitable for this product is 40°C.
Introduction
Features
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Classic bookshelf design for that warm and clear sound
Stereo speaker system with bass reflex tunnel for deeper resolution
4" bass and 0.75" treble drivers for excellent range
Ideal for all digital and analog sounds
Wooden cabinet design with good resonance characters
Built-in amplifier ideal for Mp3, Mp4, and media players, etc.
Features 2 sets of RCA inputs connection for added convenience.
Package contents
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B-77 speakers 2pcs
3.5mm stereo - 2RCA cable pc
Interconnect speaker cable, 1.8m 1pc
User manual
1
1pc
Clear and powerful stereo bookshelf speaker system with excellent speaker
drivers. Ideal for music / movie entertainment and multimedia applications. Great
sound from specially design wooden cabinets that entertains you in most
occasions.
Features bass and treble controls for your preferred sound effects.
Perfect sound every time from your music playbacks and for your perfect
entertainment. Uncolored audio, precise position, high resolution and depth with
Microlab own audio technology and design.
80 B77 97 0001 01 2011 03 07

* all illustrations not to scale
PC or Notebook
Mp3 / Mp4
Media player
CD / VC D / DVD pla yer
Illustrations
34
Connections and Operations
Front panel Connections
Rear panel
Connections
Operations
1. Connect the left speaker to the main / right speaker terminal clamp interfaces. Use
the provided interconnect speaker cable and clamp the terminals with the bare
copper wires.
2. Place both bookshelf speakers on extreme sides of the listening position.
3. Connect the playback device to the rear PC or AUX input interfaces of the right
speaker. Use the included 2RCA to 3.5mm stereo cable. Please use only a single
set of RCA connectors to avoid interferences.
4. The main / right speaker should be placed near a power source and near the
playback device such as CD/DVD, Mp3/Mp4 player or TV.
5. Last, connect the AC power cable at the rear of the main / right speaker to the AC
power supply source. Please ensure the AC power supply match the power
requirement printed at the rear panel.
1. Ensure the master volume is at the lowest setting.
2. Turn on the main AC power and switch at the rear of the main speaker. The green
power LED will be illuminated.
3. Start the playback device and song.
4. Slowly adjust the front volume to your preferred volume level and enjoy.
5. Next, adjust the bass and treble levels at the back panel to your preferred sound
effects.
AC power supply
AC 100V - 240V ~
50/60 Hz, 1 A
Main/Right speaker Left speaker
3.5mm stereo
Interconnect
speaker
cable
microlab microlab
Left speaker
AUX
PC
AUX
PC
Right speaker
Bass Reflex
tunnel
Terminal
interface
Cooling
fins
Audio
inputs
RCAs
Audio
output
Terminal
Bass
volume
Treble
volume
Power
LED
Power
cord
Power switch
Left speaker
Right speaker
Master
volume
B-77
B-77

AMPLIFIER
SPEAKERS
INTERFACES
POWER
Output power: 48 Watt RMS
Power distribution: 14 Watt x 2 + 10 Watt x 2
Harmonic distortion: < 0.3% 1 W 1 kHz
Frequency response: 55 Hz - 20 kHz
Signal/Noise ratio: > 70 dB
Separation: > 52 dB
Tweeter driver type: 0.75" x 2
Tweeter rated power: 10 Watt x 2, 6 ohm
Bass driver type: 4" x 2
Bass rated power: 15 Watt x 2, 4 ohm
Output: Terminals
Input: 2RCA sockets x 2
Power supply: AC 100 V - 240 V ~ 50/60 Hz, 1A
Operations
65
Frequently Asked Questions (FAQ) & Annex
- The end -
© 2011 Microlab Electronics Co., Ltd
All rights reserved
All specifications and information are subject to changes without further notice
If the problem still exists, please contact the distributor or seek professional advice.
Check if the audio source is working well
Check if the audio and speaker cables well connected
Check if the volume at right level
Static sound heard when
volume knob is turned
What are the products
supported?
Where to place this speaker
Check if the source file is not corrupted, play a different song and
test. Note that playing music file with above 192kbps bitrate is
recommended for better resolution.
heck if the satellite cable well connected, and ensure
source connection is correctly inserted
C
One or more satellite no sound
No Sound
Sound is distorted
Turn off the playback source first, then turn the speaker
volume knob several times. Playback again and monitor.
The static noise is due to dust, so simply turning the
volume will remove it easily.
It is magnetically shielded so can be placed near LCD TV
Monitor without any distortion
Any playback devices such as PC, notebook with USB slot, CD/DVD
player, Media Players with 2RCA or 3.5mm stereo plug.
Solutions
Specifications
Not to scale
Media player
Viewing screen
Stereo speaker arrangement
Ideal listening position and placement
Left Right