hd Slim265

Design Subwoofer

  • 2x 6“ Long-Excursion Subwoofer 300 W / 600 W
  • transmission range from 55 Hz
  • versatile mounting options
  • inconspicuous design
  • 102 mm extremely flat enclosure
  • deep bass extension suitable for hd column speakers
The hd Slim265 Design Subwoofer is an inconspicuous bass extension to all hd column loudspeakers of the hd C-/M-/ML-/PL- and Beam-Series and extends the frequency range down to 55 Hz. The specially developed for a low housing volume 6″ long excursion chassis with a single roll surround and ferrite magnet system guarantee through the ventilation at the pole core optimal heat dissipation with minimal power compression. The lower heat development also means increased reliability and reduced thermal stress on the voice coil. Excellent dynamics and dry bass reproduction characterize the sound of the hd Slim265.

The hd Slim265 can be installed flexibly and easily with brackets on a wall or ceiling or can be used on the floor using the adjustable leveling feet. Clamping connections on the loudspeaker side ensure a tool-free and quick connection of the loudspeaker. For optimum adaptation to the room architecture, the loudspeaker can be customized in all RAL colors. Due to the super flat design of just 102 mm, the hd Slim265 requires the operation of Harmonic Design system amplifiers for a precise and unobtrusive low-frequency reproduction. The selectable impedance of 4 or 16 Ohms efficiently and budget-friendly uses the existing amplifier resources.

Model hd Slim265
Principle bass reflex system, downfire
Transducers 2x 6″ long excursion chassis
Crossover active up to max. 200 Hz
Power handling capacity (RMS/Peak) 300 W / 600 W
Frequency range 55 Hz – 200 Hz
Sensitivity (1 W / 1 m) 98 dB
SPLmax 125 dB
Nominal impedance 4 or 16 Ohms
Connection gold plated clamp terminals
Dimensions (W x H x D) 400 x 102 x 584 mm
Weight 9 kg
Enclosure reinforced multiplex housing
fine textured paint
clamp terminal on the loudspeaker side
Options wall mount set
leveling feet for ground application
weather protection
RAL color


  • wall mout set
  • leveling feet for ground application


  • restaurants, bars, airports, train stations, home cinema
  • conference rooms, hotels, A/V installations
  • public buildings, conference and media technology
  • concert halls, broadcast