The Citronic CASA-12BA is a compact 12" active subwoofer cabinet designed to add low-frequency support to CASA full-range speakers and other active PA systems. With a built-in Class D amplifier, 400W RMS output and 1400W peak output, it provides a practical bass extension option for mobile DJs, small venues, rehearsal spaces, parties, presentations and general portable PA use. The front-loaded 12" sub driver helps deliver additional warmth, punch and low-end weight for music playback and live sound applications. It is particularly useful where smaller top speakers need extra bass support, allowing the main speakers to focus on mid and high-frequency coverage while the subwoofer handles the lower frequencies. Connectivity is designed for active PA system setups, with left and right balanced XLR line inputs, balanced line outputs and link outputs. The output section includes a switchable high-pass crossover, allowing connected active top speakers to receive a filtered signal when required. A phase switch is also included to help reduce cancellation and support better alignment between subwoofer and top speakers. The CASA-12BA cabinet is constructed from 15mm MDF with a durable textured finish, side carry handles and a 35mm pole mount socket. This allows a compatible top speaker to be mounted above the subwoofer using a suitable speaker pole, creating a neat and compact sub/satellite PA system. Supplied with an IEC mains lead, the CASA-12BA is self-powered and does not require a separate amplifier. It is a useful addition to CASA speaker systems where a fuller, more powerful sound is required without moving to a larger full-range cabinet.

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The Citronic CASA-15BA is a 15" active subwoofer cabinet designed to add stronger low-frequency output to CASA full-range speakers and other active PA systems. With a built-in Class D amplifier, 500W RMS output and 1800W peak output, it provides a more powerful bass extension option than the smaller CASA-12BA while remaining practical for portable use. The front-loaded 15" high-flex sub driver helps deliver extra warmth, punch and low-end weight for music playback, DJ sets, small live sound applications and event audio. It is well suited to users who need a fuller sound from compact top speakers, allowing the subwoofer to handle the lower frequencies while the main speakers focus on vocal clarity and mid/high-frequency coverage. Connectivity is designed for active PA setups, with left and right balanced XLR inputs, balanced XLR outputs and link outputs. The output section includes a switchable high-pass crossover for feeding active top speakers, while the phase switch helps reduce cancellation and supports better alignment between subwoofer and full-range cabinets. The CASA-15BA cabinet is constructed from 15mm MDF with a durable textured finish, side carry handles and a 35mm pole mount socket. The 15" and 18" CASA subwoofer models also include mounting points for optional castors, making them easier to move in mobile PA and event environments. Supplied with an IEC mains lead, the CASA-15BA is self-powered and does not require a separate amplifier. It is a strong choice for mobile DJs, small venues, schools, rehearsal spaces, parties and compact sound systems where more low-end impact is required.

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The Citronic CORVA-10SA is a compact high-power 10" active subwoofer designed for professional sound reinforcement, live events and fixed installations requiring powerful low-frequency performance from a relatively compact enclosure. Delivering 450W RMS and up to 900W maximum output, it is designed to pair seamlessly with CORVA full-range loudspeakers. A custom heavy-duty 10" driver with a 2.5" voice coil delivers a frequency response of 50Hz to 150Hz and a maximum SPL of 125dB. This provides strong, controlled bass reproduction for music playback, live sound and other applications where additional low-frequency impact is required. The integrated Class D amplifier features onboard DSP controlled through a colour display, providing convenient access to EQ profiles, dynamics and gain settings. USB connectivity also enables more detailed configuration, testing and storage of custom DSP settings using a compatible PC. A rugged 18mm plywood enclosure with a durable polyurea coating and powder-coated steel grille provides protection for professional use. Double carry handles make transportation easier, while an integrated 35mm pole socket allows a compatible full-range loudspeaker to be mounted directly above the subwoofer. The CORVA-10SA is well suited to schools, entertainment venues, houses of worship, bars, corporate events and professional AV hire where compact dimensions, integrated processing and substantial bass output are required.

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The Citronic CASA-18BA is an 18" active subwoofer cabinet designed to add powerful low-frequency reinforcement to CASA full-range speakers and other active PA systems. With a built-in Class D amplifier, 600W RMS output and 2200W peak output, it is the largest active subwoofer in the CASA range and is well suited to users who need stronger bass response for music playback, DJ sets and event sound. The front-loaded 18" high-flex sub driver delivers added depth, warmth and impact, making it a strong option for larger portable PA systems, small venues, rehearsal rooms, schools, hospitality spaces and mobile DJ setups. It allows the main speakers to focus on vocal clarity and mid/high-frequency coverage while the subwoofer handles the low-end energy required for a fuller system sound. Connectivity is designed for practical active PA setups, with left and right balanced XLR inputs, balanced XLR outputs and link outputs. The output section includes a switchable high-pass crossover for feeding active top speakers, while the phase switch helps reduce cancellation and supports better alignment between the subwoofer and full-range cabinets. The CASA-18BA cabinet is constructed from 15mm MDF with a durable textured finish, side carry handles and a 35mm pole mount socket. It also includes mounting points for optional 75mm castors, making it easier to move in mobile PA, hire and event environments. Supplied with an IEC mains lead, the CASA-18BA is self-powered and does not require a separate amplifier. It is a strong choice for users who need the deepest and most powerful bass option from the Citronic CASA active subwoofer range.

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The Citronic CORVA-12SA is a high-power 12" active subwoofer designed for professional sound reinforcement, live events and fixed installations requiring strong, controlled low-frequency performance. Delivering 700W RMS and up to 1400W maximum output, it provides substantial bass reinforcement while remaining compact enough for flexible installation and portable use. A heavy-duty 12" driver with a 100mm voice coil delivers a frequency response of 50Hz to 150Hz and a maximum SPL of 128dB. The driver and ported cabinet are engineered to provide deep, dynamic bass with strong projection, making the CORVA-12SA an ideal partner for CORVA full-range active loudspeakers. The integrated Class D amplifier is controlled by onboard DSP, with a colour display providing access to EQ profiles, dynamics and gain settings. A USB interface also allows connection to a PC for more detailed configuration, testing and storage of custom DSP settings. The enclosure is constructed from rugged 18mm plywood with a durable polyurea coating and powder-coated steel grille. Double carry handles are fitted on each side for easier transport, while a 35mm pole socket allows a compatible full-range loudspeaker to be mounted directly above the subwoofer. Suitable for live music, entertainment venues, schools, houses of worship, corporate events, outdoor applications and professional AV hire, the CORVA-12SA combines substantial output, integrated DSP and robust construction in a versatile active subwoofer.

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The Citronic CORVA-15SA is a high-power 15" active subwoofer designed for professional sound reinforcement applications requiring powerful, controlled low-frequency performance and high sound pressure levels. Delivering 1200W RMS and up to 2400W maximum output, it is particularly suited to live events, entertainment venues, professional installations and larger PA systems. A custom heavy-duty 15" driver with a 4" voice coil provides deep and dynamic bass reproduction, with a frequency response of 45Hz to 150Hz and a maximum SPL of 132dB. The combination of high power handling and strong projection makes the CORVA-15SA ideal for applications where substantial low-frequency impact is required. The integrated Class D amplifier incorporates onboard DSP controlled via a menu-driven colour display, providing convenient adjustment of EQ profiles, dynamics and gain. USB connectivity also allows connection to a PC for more detailed configuration, testing and storage of custom DSP settings. Designed to complement Citronic CORVA full-range active loudspeakers, the CORVA-15SA can form part of a complete high-output PA system with balanced frequency coverage and strong projection. A 35mm pole mount socket is integrated into the top of the enclosure, allowing a compatible full-range cabinet to be positioned directly above the subwoofer. The rugged enclosure is constructed from 18mm plywood with a durable polyurea coating and powder-coated steel grille. Double carry handles on each side assist with handling and transportation, making the CORVA-15SA suitable for both permanent installations and professional mobile use.

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The FBT X-SUB 115SA is a professional active 15" bass reflex subwoofer designed to add powerful low-frequency reinforcement to portable and installed sound systems. Built around a 15" woofer with a 3" voice coil and a 1200W Class D amplifier, it provides strong bass performance in a compact cabinet format suitable for mobile DJs, live sound users, venues, schools, houses of worship, hospitality spaces, AV installers and event production companies. As part of FBT’s X-SUB range, the X-SUB 115SA is designed to work as a low-frequency extension for active loudspeaker systems, including FBT X-LITE and X-PRO series speakers. This makes it a strong choice for users who need additional bass impact for music playback, live vocals, DJ sets, presentations, fitness spaces, small stages, function rooms and general sound reinforcement. FBT specifically describes the X-SUB range as designed as the perfect partner for the X-LITE and X-PRO series. The subwoofer uses a bass reflex cabinet design to deliver efficient low-frequency output from a manageable enclosure. Its frequency response is listed at 42Hz to 120Hz at -6dB, giving it useful extension for kick drum, bass guitar, electronic music, DJ playback and full-range programme audio. With a maximum SPL of 135dB half-space, the X-SUB 115SA provides substantial output for a compact 15" active subwoofer. Power is delivered by an integrated 1200W Class D amplifier. This powered format removes the need for a separate amplifier rack, helping simplify system setup and reducing the amount of additional equipment required. For portable users, this means faster deployment and fewer components to transport. For fixed installations, it provides a matched amplifier and loudspeaker solution that is straightforward to specify and integrate. The onboard DSP processor includes 4 presets, giving users practical control over the subwoofer’s response for different applications and speaker pairings. FBT lists the presets as 2 responses with 2 different cut-off frequencies, allowing the subwoofer to be adapted to suit different system layouts. This is useful when pairing the X-SUB 115SA with different top speakers or using it across multiple room types and event formats. The control panel provides stereo combo XLR/jack inputs and outputs, stereo XLR high-pass filter outputs, level control, preset selection, 0°/180° phase reversal and protection/limiter LED indicators. These controls make the subwoofer practical for professional PA systems, allowing signal to be routed cleanly to full-range speakers while giving the operator essential tools for level matching, phase alignment and basic system optimisation. The X-SUB 115SA is built from 15mm birch plywood with a scratch-resistant black painted finish. This gives the cabinet the durability required for portable audio work, live events and fixed installations where equipment needs to withstand regular handling. The cabinet also includes two aluminium handles, helping users lift and position the subwoofer during setup and pack-down. Optional 100mm transport wheels are available for users who need improved mobility. An M20 top-mounted stand adapter is included, allowing a compatible full-range speaker to be pole-mounted above the subwoofer. This supports a clean sub-and-top system layout for mobile DJs, schools, bars, churches, small venues and hire systems. When paired with suitable active top speakers, the X-SUB 115SA can form the low-frequency foundation of a compact but professional PA system. The subwoofer measures 455 x 584 x 570mm and weighs 30.3kg. Transport dimensions are listed as 710 x 650 x 600mm, with a transport weight of 36.5kg. These figures are important for users planning storage, van loading, venue access and manual handling. For customers looking to add controlled low-frequency output to an active PA system, the FBT X-SUB 115SA offers a strong balance of power, portability and professional build quality. With a 15" driver, 1200W Class D amplifier, 135dB SPL, DSP presets, XLR signal routing, birch plywood construction and M20 pole mount, it is a practical subwoofer for portable sound, venue installations and AV systems requiring reliable bass reinforcement.

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