The Citronic CASA-12BA active subwoofer features a 12" bass driver and a built-in Class D amplifier. The cabinet is made from 15 mm-thick MDF and has two side carry handles, a 35 mm pole-mount socket and a protective steel grille in front of the driver.

The balanced XLR L+R line inputs connect to corresponding link outputs, while the XLR L+R line outputs feature a switchable high-pass filter for connecting active speakers. It can be used as a mono subwoofer with stereo speakers or as a dedicated subwoofer for each speaker. The phase switch helps prevent sound cancellation when using multiple speakers.

• Operation: Active
• Amplifier type: Class D
• RMS power: 400 W
• Maximum power: 700 W
• Peak power: 1400 W
• Maximum sound pressure level: 122 dB
• Bass driver: 12"
• Voice coil diameter: 62 mm
• Frequency response: 55–150 Hz
• Line inputs: Balanced XLR L+R
• Line outputs: Balanced XLR L+R with switchable high-pass filter
• Link outputs: XLR L+R
• Controls: Output level, phase switch, high-pass filter
• Cabinet material: 15 mm-thick MDF
• Carry handles: 2 side handles
• Mounting socket: 35 mm
• Power supply: 230 Vac, 50 Hz (IEC)
• Colour: Black
• Dimensions: 45 × 38 × 48 cm
• Weight: 18.86 kg