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The HR218 / 36 is a high performance passive subwoofer designed to work in conjunction with the full range of the HR series, offering a powerful high power boost between 34 and 200 Hz.

High power, sub-bass cabinet with dual 18” low frequency transducers in bass reflex, direct radiation configuration. 145dB SPL (7200W Program).

This enclosure offers an extraordinary power-volume-weight ratio, being a highly versatile sub-system in all types of installation projects.

Perfectly suited for:

→  Club & Bar installations
→  Live sound
→  Theatres
→  Houses of worship
→  Multi media spaces
→  Sound reinforcement



The HR-218/36 cabinet is constructed from 13-ply premium birch plywood (18mm thickness) and finished with polyurea coating.

Internal design

The internal structure of the HR-218/36 is heavily braced for greater longevity and all parts are assembled on metal inserts with metric screws.

Rigging HR-18-6
Rear panel

A compact powder coated steel panel contains the connectors.

Grill HR-18-6

The HR-218/36 has a heavy duty, powder coated front grille with a special acoustic rear fabric to protect the transducers against dust and dirt.

Handle HR-18-6

An ergonomic handle is located on each side of the HR-218/36 enclosure to facilitate transport, positioning and loading of the cabinets.


Components 2 x 18″, 4″ tetracoil dual voice coil
Frequency Range 29 Hz – 200 Hz (-10dB)
Frequency Response 34 Hz – 200 Hz (± 3dB)
Sensitivity 103 dB (1W@1m) π
Max SPL 139 dB – 145 dB Peak
Coverage Omnidirectional
Power 3600 W (7200 W program, 14400 W peak)
Crossover Active
Nominal Impedance 4 Ω
Connectors 2 x Neutrik Speakon NL4MP
Finish Polyurea coating – other colours (RAL) available
Material 18 mm premium birch plywood
Dimensions 585 x 1080 x 781 mm (H x W x D)
Weight 82 Kg (180 lbs)