ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
1/83
USB-900
OPERATION MANUAL
Thank you for buying this JB Systems
®
product. To take full advantage of all possibilities, please read these
operating instructions very carefully.
FEATURES
This unit is radio-interference suppressed. This appliance meets the requirements of the current European
and national guidelines. Conformity has been established and the relevant statements and documents have
been deposited by the manufacturer.
Twin MP3-player for DJ’s with built-in audio mixer.
Supports USB memory sticks and portable USB-hard disks!
Supports SDHC memory cards up to 32GB (total = 64GB or about 12800 MP3 tracks!)
Both players can read simultaneously from the same memory card / USB-hard disk
Alphanumeric LCD display supports ID3V2 tags (song title, artist, genre, bit rate)
Full support for all kinds of MP3 sub formats:
MPEG1 layer3 (32 + 44,1 + 48kHz)
MPEG2 layer3 (16 + 22,05 + 24kHz)
MPEG2.5 layer3 (8 + 11,025 + 12kHz)
Supports both CBR and VBR bit rate modes
The user interface of both MP3-players is identical to ordinary CD-players: DJs can easily start using the
USB900 and all its intuitive possibilities:
Ultra fast memory start within 10msec
Real-time cue (“Cue on the fly”)
4 Hot Cue buttons can hold cue points and/or seamless loops
Up to 4 Seamless loops for every track with reloop/stutter
Seamless real-time loop edit function for begin and end points!
Full automatic beat counters with extra TAP-function
Pitch Lock (Master Tempo)
Pitch ranges: +/-4% +/-8% +/-16% +16%/-100%
Pitch bend on jog wheel with adjustable pitch bend parameter for ultra precise pitch bending
100% anti-shock under all conditions!!!
1/75sec frame search
Fader start: on internal mixer or via external inputs
Auto Cue function (-48dB)
Random play (all tracks on the storage device are played in random order)
Selectable elapsed and remain time display
Single/continuous play
Folder mode: track search limited to one folder
Track mode: track search on the entire storage device
Internal 2channel mixer:
Both channels have gain and digital treble/bass controls
Both channels equipped with “easy glide” VCA-DJ-faders
Removable VCA crossfader with fader starts
Headphone with volume and high power amplifier
PFL monitoring with mixing of cue and master signals in headphone
Several working modes:
With internal mixer: just connect the mixed output to an amplifier or powered loudspeakers
No internal mixer but with tone controls: 2 separate outputs, both with tone controls active.
No internal mixer or tone controls: 2 separate outputs, both without tone controls.
Easy firmware updates via internet downloads.
ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
2/83
USB-900
BEFORE USE
Before you start using this unit, please check if there’s no transportation damage. Should there be any, do
not use the device and consult your dealer first.
Important:
This device left our factory in perfect condition and well packaged. It is absolutely necessary
for the user to strictly follow the safety instructions and warnings in this user manual. Any damage caused
by mishandling is not subject to warranty. The dealer will not accept responsibility for any resulting defects
or problems caused by disregarding this user manual.
Keep this booklet in a safe place for future consultation. If you sell the fixture, be sure to add this user
manual.
To protect the environment, please try to recycle the packing material as much as possible.
Check the contents:
Check that the carton contains the following items:
User manual
USB-900 unit
AC/DC Adapter 6V/3000mA
2 pair RCA cables
2 remote start cables (3mm mono mini jack)
SAFETY INSTRUCTIONS:
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
To avoid condensation to be formed inside, allow the unit to adapt to the surrounding temperatures when
bringing it into a warm room after transport. Condense sometimes prevents the unit from working at full
performance or may even cause damages.
This unit is for indoor use only.
Don’t place metal objects or spill liquid inside the unit. No objects filled with liquids, such as vases, shall be
placed on this appliance. Electric shock or malfunction may result. If a foreign object enters the unit,
immediately disconnect the mains power.
No naked flame sources, such as lighted candles, should be placed on the appliance.
Don’t cover any ventilation openings as this may result in overheating.
Prevent use in dusty environments and clean the unit regularly.
Keep the unit away from children.
Inexperienced persons should not operate this device.
Maximum save ambient temperature is 40°C. Don’t use this unit at higher ambient temperatures.
Minimum distances around the apparatus for sufficient ventilation is 3cm.
Always unplug the unit when it is not used for a longer time or before you start servicing.
The electrical installation should be carried out by qualified personal only, according to the regulations for
electrical and mechanical safety in your country.
Check that the available voltage is not higher than the one stated on the rear panel of the unit.
The socket inlet shall remain operable for disconnection from the mains.
The power cord should always be in perfect condition. Switch the unit immediately off when the power cord
CAUTION
CAUTION:
To reduce the risk of electric shock, do not remove
the top cover. No user-serviceable parts inside. Refer
servicing to qualified service personnel only.
The lightning flash with arrowhead symbol within the equilateral triangle is intended to alert the
use or the presence of un-insulated “dangerous voltage” within the product’s enclosure that may
be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point within the equilateral triangle is intended to alert the user to the presence of
important operation and maintenance (servicing) instructions in the literature accompanying this
appliance.
This symbol means: indoor use only
This symbol means: Read instructions
This symbol means: Safety Class III appliance
