The Citronic CASA-28BA active subwoofer delivers enhanced low frequencies with two 8" woofers and a built-in 400 W RMS Class D amplifier. The preset DSP control filters the low frequencies, while the Boost switch increases the gain and the phase switch allows time alignment to be corrected. The line input connects via a balanced XLR socket or 6.3 mm jack, while the balanced XLR output routes the signal to additional active subwoofers.

The enclosure is made from 15 mm MDF with a durable textured paint finish and features an integrated carry handle and a 35 mm pole mount socket. It can be positioned horizontally to support a full-range speaker or upright in smaller spaces.

• Type: Active subwoofer
• Quantity: 1 unit
• RMS power: 400 W
• Maximum output power: 700 W
• Peak power: 1400 W
• Maximum SPL: 122 dB
• Woofer: 2 × 8"
• Frequency response: 55–150 Hz
• Amplifier: Class D
• Inputs: Balanced XLR and 6.3 mm jack
• Output: Balanced XLR
• Controls: Level, phase and Boost
• Enclosure material: 15 mm MDF
• Carry handle: Integrated
• Pole mount socket: 35 mm
• Power supply: 230 V AC, 50 Hz (IEC)
• Dimensions: 45 × 25 × 47.5 cm
• Weight: 15.7 kg
• Colour: Black