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Tempus Sub 300A

Active bass reflex subwoofer

  • Bass upgrade for the Tempus system with great power and strong bass
  • Subwoofer for additional bass and thrilling reproduction of action scenes
  • 120 watts RMS power output thanks to the high-performance Class D amplifier
  • 300 mm high-power long excursion woofer with coated paper membrane plus bass reflex for powerful bass reproduction
  • Sturdy MDF housing with elaborate bracing and removable front grille

Active bass reflex subwoofer

A 120 watt RMS class-D high performance amplifier, which is housed in the active bass reflex subwoofer of the Tempus series, provides the relentless powerful drive for the 300 mm long-throw woofer with its coated paper cone. With a Klippel-optimized magnet system and ventilated high-performance voice coil it is capable of generating a solid and voluminous, yet extremely precise deep bass range. To ensure no resonance or flow noise is produced, despite the huge movement of air that is created, the sturdy MDF housing has been equipped with elaborate bracing and two generously dimensioned Airflex ports. Volume, crossover frequency and phase can naturally be adjusted, while the active frequency response equalization system optimizes levels in the sub-bass range. The Tempus Sub 300A also features an automatic standby function with a power consumption of less than 0.5 watts.

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Technical specifications

  • Powered bassreflex subwoofer, frontfire
  • 1 x 12“ powered subwoofer
Output power (RMS/Max.)
  • 120 / 240 watts
Frequency Response
  • 20 – 200 Hz
Crossover Frequencies
  • 50 - 150 Hz adjustable
  • switchable 0°/180°
Dimensions (WxHxD)
  • 355 x 447 x 422 mm
  • 355 x 447 x 445 mm (incl. base)
  • 16.3 kg
Cabinet surface
  • Ash decor mocca
  • Ash decor Black


  • 300 mm high-power long-throw woofer with Klippel®-optimized magnet system
  • Ventilated high-performance voice coil to guarantee highest operational reliability
  • The coated paper cone ensures a profound audio reproduction
Highly modern design with silk matt lacquer and aluminium applications
  • Subwoofer
  • Mains supply
  • Stereo high level inputs
  • Stereo low level inputs
  • Front-fire construction
  • Sturdy MDF housing with elaborate bracing and removable front grille
  • Resonance-damping rubber spikes included in delivery
  • Two generously dimensioned Airflex ports with low flow resistance
Cabinet surface
  • Ash decor mocca
  • Ash decor Black
  • High performance class-D amplifier
  • Adjustable volume and crossover frequency
  • Phase switchable from 0° to 180°
  • Automatic standby function with low power consumption <0.5 watts (can be switched off)
  • Power switch
  • Active frequency response equalization up to 150 Hz (LPC circuit) for seamless integration in AV environments
  • Mains voltage 110 – 240V