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G E T T I N G Y O U R P O W E R S T A R T E D
REMEMBER TO ALWAYS DISCONNECT BATTERY
GROUND BEFORE WORKING ON A VEHICLE’S ELECTRI-
CAL SYSTEM
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First, the +12V(BATT) terminal is connected directly to the battery of your car. Use a cable of at
least 5 mm2 (16 AWG), and make sure that the connectors are of the same value.
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Second, the ground terminal (GND) must be fastened securely to the chassis of the vehicle with
the same gauge cable as the positive cable (the same amount of power has to run through it).
Ensure that all paint, undercoating or any other insulation is removed from the area where you want
to make your ground connection to.
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Third, the last cable to connect is your remote turn-on (ON or REM). Many radio-cassette and CD-
players have an output terminal for connection of the Remote turn on of a amplifier. If you don’t
have such an output, a separate switch must be installed to control your amplifiers ON/OFF function.
S I G N A L I N P U T
The next to connect is your signal input. Use either the Line input or the High Power input (if your
head-unit does not have a Line output). Pay attention which polarity and which channel (left or
right) you are connecting. Always connect the + to a +, and the – to a -.
NEVER USE THE LINE INPUT AND THE HIGH POWER
INPUT AT THE SAME TIME. SERIOUS DAMAGE TO YOUR
CAR OR AUDIO SYSTEM CAN BE THE RESULT
Once you have connected your power and signal input, it is time to adjust the crossover and input
level for the expert tuning to get your own personal sound.
A D J U S T I N G T H E A C T I V E V A R I A B L E
C R O S S O V E R :
To get your personal sound, you can adjust the built-in active variable crossover from 80Hz to
120Hz at 12dB per Octave. Allthough the perfect adjustment varies with every piece of music, a
general adjustment for the kind of music you listen to, can be achieved. So don’t hesitate to play
around with this crossover.
A D J U S T I N G T H E L E V E L I N P U T :
1. Set your level adjustment at the minimum sensitivity.
2. Adjust the volume control of your head unit (Radio/ cassette or CD-player) to approximately
3/4 volume.
3.Turn your level adjustment clockwise until you hear the amplifier begin to distort. The amplifier
of a BCT Performance Tube “clips” very softly, so this can sometimes be a difficult adjustment.
A D J U S T I N G T H E P H A S E C O N T R O L
Depending on the set-up of your system you can adjust the Phase control.You will hear the difference
directly 0˚ or 180˚.
Thank you for choosing a Caliber product. In doing so you’ve demonstrated a desire to own the finest
in Car Audio Technology. Caliber strives to provide you with the finest products possible, and is always
looking for ways to please our customers even more.
Properly installed, your Caliber BCT 20(A)/ 25(A) Performance Tube will provide years of high quality
sonic reproduction. Before installing this Performance Tube in your vehicle, please read this entire manu-
al carefully, in order to protect your vehicle, and get the maximum performance of your mobile sound
system. If you have the Non-Active BCT (BCT 20/ 25) you have to do the same adjustments on your
amplifier you use. Please check the manual of your amplifier.
C A L I B E R W A R R A N T Y
Due to the complexity of our products, we strongly recommend that this Performance Tube is instal-
led by your authorized Caliber dealer. If properly installed by your dealer we provide a warranty for
12 months from the date of purchase. If you install this Performance Tube yourself, we wish you lots
of fun and succes in doing so. If you follow our guidelines, you’ll get the best results. Our warranty,
however, will be limited to and not exceed 30 days from the date of purchase.
C A L I B E R A C C E S S O R I E S
To realize the exceptional performance of which this Performance Tubes are capable, it is necessary
that power sources, signal sources, speakers and interconnects are of the highest quality. Remember
that Caliber is a specialized manufacturer of all sorts of Car Audio components. We also manufac-
ture everything needed for the ‘optimal’ Car Audio System (except the car). So be sure to ‘Get
Connected’ with Caliber and ask your local Caliber dealer for our accessories.
I M P O R T A N T !
The quality of installation may effect the performance and reliability of a Caliber BCT 20A/ 25A
Performance Tube. If you have any doubts or questions regarding installation or use, don’t hesitate to
contact your official Caliber dealer.
A Caliber dealer is selected for his knowledge in autosound, and has been trained to give you great
advice and service.You can always count on him to give you advice for any technical problems and will
keep you informed on the latest products by Caliber.
We wish you lots of enjoyable moments with your newest toy. Adjust the sound to perfection, but keep
paying attention to the road whilst doing so.
F E A T U R E S
These Caliber BCT 20(A) / 25(A) are Performance Tubes with no equal.They feature an active vari-
able crossover 80 - 120 Hz/12dB/Oct, input level control, softstart circuit and High Power input- or Line
input.
N O T E :
Choose the place where you are going to put your Performance Tube very carefully.The best place
for it is in your boot. Once you’ve decided where to place your Caliber Performance Tube, and you-
’ve convinced yourself there is enough air circulation and protection from unusual hazards, mark the
mounting surface.
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