Passive 18" bass-reflex subwoofer 1800W RMS - HARMONIC DESIGN HDE-60025

Compact, powerful and easy to transport passive subwoofer with bass-reflex accord. It is equipped with a specially designed 18" woofer, with a 5" voice coil that allows a large linear excursion (±15 mm).  Through the ventilation at the core of the magnetic pole, the heat development of the voice coil is dissipated optimally, therefore a high power handling capacity of 1800 WRMS and 7200 W peak can be achieved. The lower heat development also means greater reliability and reduced thermal stress on the voice coil; the result is excellent dynamics and a reproduction of dry and controlled bass at an incredible sound pressure. It does not have an internal passive cross-over, so the frequency cut must be carried out by the power amplifiers of the Harmonic Design system or by an external electronic cross-over; up to a maximum of 160 Hz (with a slope of 24 dB/oct), it guarantees the best possible transitions between subwoofer and satellite. The cabinet is constructed from high-quality plywood, painted to be scratch, impact and weather resistant with a finely textured polyurea finish. Two ergonomic carrying handles on the top ensure easy handling. There are also threads for attaching SilentWheels hd, the special 100 mm acoustically decoupled wheels.An M20 threaded insert on the top of the cabinet allows a pole to be mounted to attach another speaker. hd Sub18 is also available in a handle-less installation version with M20 thread. It can be used as a slave subwoofer in addition to the active hd P18 stereo subwoofer or with all the power amplifiers in the Harmonic Design system to ensure reliable and accurate reproduction of low frequencies. Main features 1 x 18” high performance subwoofer (1800 W / 7200 W) Frequency response from 35 Hz Max SPL 143 dB Available in a handle-less installation version / M20 thread

Technical characteristics

• Principle: bass-reflex system
• Transducers: 1 x 18″ long excursion woofer with a 5″ voice coil, vented at the pole piece and spider
• Crossover: via external electronic crossover or Harmonic Design DSP amplifiers up to a max. of 160 Hz
• Power handling: 1800 W_RMS / 7200 W peak
• Frequency response: 35 – 160 Hz
• Sensitivity: 102 dB/W/m
• SPL max: 143 dB (half space)
• Nominal impedance: 8 ohm
• Enclosure: 18 mm multiplex birch wood, baffle 36 mm multiplex birch wood, polyurea plastic coating black, steel grille coated, acoustic foam, 2 transport handles, prepared for 100 mm hd SilentWheels, M20 thread insert
• Connections: 2 x speakON NL4
• Dimensions: 536 x 542 x 600 mm
• Weight: 40 kg
• Options: transport protection cover, wheelboard, installation version, weather protection and RAL color customization