H-Series Subwoofers


Passive dual 18" very hi-efficiency horn loaded subwoofer


The H218s is a horn loaded sub bass loudspeaker with two 18″ long excursion drivers as its engine.

The H218s is a horn loaded sub bass loudspeaker with two 18″ long excursion drivers as its engine. Keeping in mind maximum energy transfer, the H218s is best when used in stacks of 4 (or at least 2). In the former case, the geometry and radiation area achieves near 0.71 circa (for 40Hz) which results in a phenomenal amount of energy at the front relative to the rear (a case very useful when we want sound where it is needed). The H218s has been a sure winner when used for EDM events in bars, nightclubs and dance festivals. Preferred to be driven actively, the H218s sub can effortlessly achieve very high sound pressure levels with nominal amplification. The H218s is recommended for use with the H112 horn mid-top in the ratio 2 subs to every 2 tops.

  • Audio Lotus Signature tone.
  • Exceptionally modeled for EDM and House music.
  • Install/Touring grade.
  • 18″ hi-resolution* driver.
  • 1600WAES / 2200WPK
  • Textured duracrylic finish/custom colors available.
  • C G optimized geometrical construction.
  • C G optimized handles.
Driver config 2x 18″ LF driver
Power handling 1600WAES
Enclosure type Horn loaded
Dispersion Highly directive forward when used in stacks of four
Impedance 4 ohms
Frequency Response 35Hz – 350Hz, -3dB CD
Frequency Response 31Hz – 400Hz, -6dB CD
SPL 1W/1m 104dB for 2x boxes 106dB for 4x boxes
Passive Crossover Yes, passive
Biampable ? Yes, Default
Crossover frequency 40Hz ~ 125Hz recommended operative band
Protection External
Max SPL (1m)
1/4 space radiation
137dB cont., 140dB pk 2x enclosures.
141dB cont., 144dB pk 4x enclosures.
Connections 2x NeutrikTM SpkonTM NL4 with link thru
Height 926mm (36.5″)
Width 1194mm (47″)
Depth 712mm (28″)
Weight 113kg (249lbs)
Enclosure material 18mm marine grade ply
Enslosure shape Cuboid / non-symmetric
Finish Gun painted sputtered acrylic
Colours yes, RAL spectrum
Grille OptionalPerforated galvanized steel, powder coated
Wall / Ceiling mount N/A
  • FOH for Bar/Club/Lounges
  • FOH for Discotheques
  • FOH for Live sound performance
  • Built for rigors of Rental and Touring

* – These enclosures will need subs to support their low end

Specifications and appearance are subject to change without notice.

‘+ – not part of standard features, i.e., optional

FOH # Front of House (aka Main System or Main PA)

C G Centre of Gravity

ER Extended Range (in this case extended LF range)

HR High Resolution

LF Low-Frequency unit/driver

LMF Low mid frequency unit/driver

HMF High mid frequency unit/driver

HF High-frequency unit/driver

RAL German Institute for color matching/standardization system

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