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Solid, dynamic bass for home cinemas up to 18 Hz

Smallest THX Ultra 2-certified single subwoofer in the world

32 cm high-performance woofer supported by two 32 cm passive membranes

Integrated Class D amplifier with 550 watts RMS and 1,100 watts of maximum power output

Extremely sturdy MDF cabinet with solid 45 mm baffle

The Cinema Ultra Sub 300-THX subwoofer also amazed the THX engineers: It is the smallest woofer so far to have been awarded THX Ultra2™ certification. Here, too, the basis for the record is the very latest technology. The 32 cm high-performance driver is optimised for a large stroke and minimal distortions. For power right from the bottom - the Cinema Ultra Sub 300-THX goes all the way down to 18 Hertz! – the subwoofer is supported by two passive radiators of the same size and appearance. Together with the newly developed 550 watt Class D power amp, they are located in a compact, extremely sturdy enclosure where the baffle alone, made of 45 mm thick MDF, effectively suppresses a lot of vibrations

PRINCIPLE - THX Ultra2-certified active high-performance subwoofer Dual passive radiator

EQUIPMENT - 320 mm Woofer 2 x 320 mm passive radiator

OUTPUT POWER (RMS/MAX.) - 550 / 1100 watts


CROSSOVER FREQUENCIES - THX: without filtering Line-Modus: 40-180 Hz

PHASE - 0° to 180° continuously variable

DIMENSIONS (WXHXD) - 468 x 461 x 460 mm 468 x 461 x 478 mm (incl. amplifier)

WEIGHT - 32,5 kg

CABINET SURFACE - Front: black silk matt / body: textured film - anthracite


All of the chassis have been specially developed for the Cimema Ultra set in order to meet the very strict requirements of the THX Ultra2 standard

THX Ultra2-certifed subwoofer for the Magnat Cinema Ultra set

Top acoustic performance through individual components developed for high performance in all details

Non-ventilated design to eliminate any air-flow noise at high levels

Two long-stroke passive diaphragms adapted to the woofer and enclosure volume ensure deep extended bass without any background noise


30 cm high-performance long-stroke woofer, 30 cm long-stroke passive diaphragms with selber Membran

Flow-optimised, highly stable die-cast aluminium cage to avoid compression effects and resonances

Double-magnet high-power drive system with inductivity control ring for extremely low distortion

Extremely large linear hub for maximum signal purity with large deflections

Multiple-ventilated high-performance voice coil for high resilience

Multiple coated paper diaphragm and dust cap for ideal rigidit

Low-loss rubber surrounds for woofer and passive diaphragms

8 screw fixings for firm anchoring in the baffle


Very stable, braced MDF enclosure with particularly low-resonance, 45 mm thick baffle


Class D high-performance amplifier specially developed for this subwoofer

Class D technology and a switch mode power supply ensure low heating and compact dimensions despite extemely high-efficiency performance

Real-time limiter minimises distortions and prevents overloading

Active frequency range equalisation according to the strict THX Ultra2 guidelines

THX input and stereo inputs for flexible use in any surroundings

Adjustable volume, phase and crossover frequency (in stereo mode)

Auto stand-by and automtic switch-on for high user convenience

Low stand-by power consumption < 1 Watt


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