BC 108FA - Car speaker CALIBER - Free user manual and instructions

Product type	Active subwoofer enclosure
Speaker size	8 inches
Power rating RMS	100 Watts
Power rating MAX	600 Watts
Nominal impedance	4 ohms
Frequency response	10 Hz – 170 Hz (+3 dB)
Total harmonic distortion	< 1%
Signal-to-noise ratio (A-weighted)	> 80 dB
Input sensitivity (RCA)	0.2 – 3 V
Low/high pass filter	30 – 160 Hz
Protection features	Thermal, overload, short-circuit
Power connectors	Chrome plated
Design	European design and engineering
Recommended power cable gauge	At least 10 mm²
Required ventilation	At least 5 cm (2 inches) on all sides
Warranty (professional installation)	12 months from date of purchase
Warranty (self-installation)	30 days from date of purchase
Signal input options	RCA input and high-level input (speaker level)

Frequently Asked Questions - BC 108FA CALIBER

Can I use both RCA and high-level inputs at the same time?

No, never use the HI input and RCA input at the same time. Only one input method should be connected.

What size fuse should I use for this subwoofer?

The amplifier has a built-in 20A fuse. For vehicle protection, install an additional fuse of equal or lower rating within 30 cm (12 inches) of the battery.

How do I adjust the input sensitivity?

Set the input level knob to minimum. Turn your radio volume to 3/4 of maximum. Slowly increase the input level until you hear distortion, then back off slightly. The amplifier clips softly, so listen carefully.

Can I connect this subwoofer to a factory radio without RCA outputs?

Yes, use the included high-level input plug and connect it to the speaker outputs of your factory radio. This allows signal input without RCA cables.

What is the purpose of the remote turn-on wire (REM)?

The REM wire connects to a 12V turn-on signal from the head unit or a switch. It tells the amplifier to turn on when the radio is powered.

How should I ground the amplifier?

Connect the GND terminal securely to bare metal on the vehicle chassis using the same gauge wire as the +12V cable. Remove any paint or insulation from the grounding point.

What is the frequency range of this subwoofer?

The frequency response is 10 Hz to 170 Hz (+3 dB), making it suitable for deep bass reproduction.

Does the enclosure need ventilation?

Yes, leave at least 5 cm (2 inches) of space around all sides of the enclosure for proper heat dissipation.

What is the warranty period if I install it myself?

If you install the amplifier yourself, the warranty is limited to 30 days from the date of purchase. Professional installation extends the warranty to 12 months.

Can I use this subwoofer in a home audio system?

This product is designed for 12V car audio systems. For home use, you would need a 12V power supply with sufficient current rating, which is not recommended due to safety concerns.

USER MANUAL BC 108FA CALIBER

Monochrome illustration of a cube with abstract circular patterns and no visible text or symbols

BC 108FA

Quick start guide

Frequency response	10Hz - 170Hz (+3dB)
Total Harmonic Distortion	<1%
Signal to noise ratio (A-Weighted)	>80dB
Input Sensitivity RCA input	0.2 - 3V
Low/high pass filter	30 - 160Hz

8" SUBWOOFER:

Power rating RMS:	100 Watt
Power rating MAX.	600 Watt
Nominal imp.Z:	4 ohm

graph TD
    A["600 watts"] --> B["LINE OUT"]
    B --> C["BCIOBFA ACTIVE ENCLOSURE"]
    C --> D["R+ Speaker L+"]
    C --> E["R- Speaker L-"]
    C --> F["R- Speaker R+"]
    C --> G["R- Speaker R-"]
    C --> H["R- Speaker Blue"]
    C --> I["FUSE"]
    I --> J["POWER INPUT"]
    J --> K["20A"]
    K --> L["FUSE"]
    L --> M["Racing BY CALIBER"]
    N["BATT"] --> O["FUSE"]
    O --> P["REMOTE WIRE"]
    Q["OPTION 1 (by RCA output)"] --> R["LINE OUT"]
    S["OPTION 2 (by speaker output*)"] --> T["LINE OUT"]
    U["*Hi Input connector included"] --> V["->"]

FEATURES

• Variable input sensitivity: RCA input 0.2V to 3V.
• Thermal-, Overload- and Shortcircuit protection.
- Chrome plated power connectors for optimal power distribution.
• European design and engineering.

MOUNTING

The enclosure has to have at least 5 cm (2") ventilation space at all sides, to allow the heat to rise away from the amplifier. Be sure that the power and signal cables can enter the enclosure in a straight line, to avoid the risk of malfunction. Always place the power- and signalcables at opposite sides of the vehicle to reduce any noises. The amplifier should be protected from exposure to moisture and direct sunlight.

INSTALLATION

Remember to always disconnect battery ground before working on a vehicle's electrical system! Always place a fuse or circuit breaker no more than 30 cm (12") from the battery, no greater than the fuse(s) of your amplifier for optimal protection.

GETTING YOUR POWER STARTED

• First, the +12V terminal is connected directly to the battery of your car. Use a cable of at least 10 mm ^2 , and make sure that the connectors are of the same value.
• Don't forget the extra "Vehicle protection" fuse.
• The +12V terminal should NOT be connected to the car fuse box.
• Second, the ground terminal (GND) must be fastened securely to the chassis of the vehicle with the same mm ^2 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.
• Third, the last cable to connect is your remote turn-on (REM). Many radio-cassette and CD-players have an output terminal for connection of the REM of an amplifier. If you don't have such an output, a separate switch must be installed to control your amplifiers on/off function.

SIGNAL INPUT

The Caliber Amplifiers offer you two possibilities for your signal input.

• A High Level input, using the loudspeaker output from your radio and the special High Level input plug you found in the box.
• Signal input by using a RCA cable from your radio's RCA outputs to the amplifiers signal input RCA's.

NEVER USE THE HI INPUT AND RCA INPUT AT THE SAME TIME!

RCA INPUT

- Connect the RCA-outputs of your radio to the RCA input terminals of the amplifier. Take good care that you connect the Right output of your radio to a Right input of your amplifier, and that you connect the Left output of your radio to a Left input of your amplifier.

AMPLIFIER ADJUSTMENTS

• Put the input level adjustment knob to the minimum.
• Put the volume of your radio to 3/4 of the maximum.
• Now adjust the input level of the front channel. Slowly turn up the input level and listen carefully until you hear the amplifier begin to distort. A Caliber Amplifier "clips" very softly, so this can sometimes be a difficult adjustment.

CALIBER WARRANTY

Due to the complexity of our products, we strongly recommend that this amplifier is installed 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 amplifier yourself, we wish you lots of fun and succes in doing so. If you follow our guidelines, you'll get the best result. Our warranty, however, will be limited to and not exceed 30 days from the date of purchase.

WARNING

Points to observe for safe usage

Read this manual carefully before using this item and its components. They contain instructions on how to use this product in a safe and effective manner. Caliber Europe BV cannot be responsible for problems resulting from failure to observe the instructions in this manual.

Turn off the device immediately in case of a problem.

Failure to do so may cause personal injury or damage to the product. Return it to your authorized Caliber Europe BV dealer for repairing.

Product cleaning.

Use a soft dry cloth for periodic cleaning of the product. For more severe stains, please dampen the cloth with water only. Anything else has the chance of dissolving the paint or damaging the plastic.

Temperature.

Be sure the temperature inside the room/vehicle is between +45°C (+113°F) and 0°C (+32°F) before turning your unit on.

Maintenance.

If you have problems, do not attempt to repair the unit yourself. Return it to your Caliber Europe BV dealer for servicing.

Placement.

Place the product on a flat surface. Provide enough space around the product for sufficient ventilation.

Heat.

Do not locate the appliance in the vicinity of a heat surface or in direct sunlight.

Accessories.

Use only supplied accessories

PARTICULARITÉS

MAI USARE INPUT HI E INGRESSO RCA ALLO STESSO TEMPO!

INGRESSO RCA

GB Caliber hereby declares that the item BC108FA is in compliance with the essential requirements and other relevant provisions of Directive 2004/108/EC (CE) and 2011/65/EU (Rohs)