Electronics / Speakers Soundbars
Caliber BC 112SA Active Enclosure User Guide
Get started with your Caliber BC 112SA active subwoofer enclosure. This guide covers installation, wiring, signal input options, and amplifier adjustments for optimal sound.
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The Caliber BC 112SA is an active subwoofer enclosure designed for automotive audio systems. It features a 12-inch subwoofer with a built-in amplifier, providing a compact solution for enhanced bass performance. The unit is engineered for thermal, overload, and short-circuit protection.
Mounting and Installation
Ensure at least 5 cm of ventilation space around all sides of the enclosure to allow heat to dissipate from the amplifier. Keep power and signal cables separated on opposite sides of the vehicle to minimize noise interference. Always disconnect the vehicle battery ground before starting electrical work. Install a fuse or circuit breaker within 30 cm of the battery for safety.
Power Connections
Connect the +12V terminal directly to the vehicle battery using a cable of at least 10 mm². The ground (GND) terminal must be securely fastened to the vehicle chassis, ensuring the connection point is free of paint or undercoating. The remote (REM) wire should be connected to the remote output of your head unit to control the amplifier's power state.
Signal Input
The BC 112SA offers two signal input methods: High Level input using the speaker outputs from your radio (via the included connector) or RCA input using RCA cables. Never use both the High Level and RCA inputs simultaneously.
Amplifier Adjustments
To tune the system, set the input level knob to minimum and the radio volume to approximately 3/4 of its maximum. Gradually increase the input level until you hear the amplifier begin to distort, then back it off slightly. Note that Caliber amplifiers clip very softly, which may require careful listening.
Safety and Maintenance
Operate the device within a temperature range of 0°C to +45°C. Clean the unit with a soft, dry cloth; avoid using harsh chemicals that could damage the finish. If you encounter issues, do not attempt to repair the unit yourself. Contact your authorized Caliber Europe BV dealer for service. For further information, visit www.calibereurope.com.
Official resources from the manual
Manufacturer information
Caliber Europe
Practical help
Common problems
Distorted sound
Reduce the input level adjustment knob on the amplifier or lower the radio volume.
Amplifier does not turn on
Check the remote (REM) wire connection to the head unit and ensure the +12V and ground connections are secure.
Noise or interference
Ensure power and signal cables are routed on opposite sides of the vehicle.
Before use
- Ensure at least 5 cm of ventilation space around the enclosure.
- Disconnect the vehicle battery ground before installation.
- Install a fuse within 30 cm of the battery.
- Use at least 10 mm² cable for power connections.
- Verify that the +12V terminal is not connected to the car fuse box.
Specs in practice
- Frequency response
- 25Hz - 3.5KHz
- Power rating RMS
- 200 Watt continuous power handling.
- Power rating MAX
- 600 Watt peak power handling.
- Nominal impedance
- 4 ohm.
Images and diagrams
- The connection diagram shows two options: Option 1 for speaker level input and Option 2 for RCA line-level input.
- The diagram highlights the correct wiring for +12V, REM, and GND terminals on the amplifier panel.
Model compatibility
- Never use High Level input and RCA input at the same time.
- Compatible with head units featuring either RCA outputs or speaker-level outputs.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.