VH Sub118R aspects

VH Subwoofer Series VH Sub118R VH Sub218R VH Infra218R VH Sub218H VH Sub121H 
VH Sub118R is a special lightweight and compact Sub-Bass unit housing a single long excursion 18in. direct radiating transducer mounted in a particular design Bass-reflex tuned enclosure.
Thanks to the Bass-reflex differentially flared design, the optimized vented port reduces turbulence and port noise at high levels, while also increasing LF system efficiency and extending its frequency response down to 35Hz.
Designed for ground stacked configurations it can be positioned in a cardioid subwoofer array with one cabinet physically facing backwards and processed by a dedicated amplifier channel.
It allows to achieves a remarkable benefit controlling the lower frequencies response and significantly reducing the energy radiating towards to the rear.
Thanks to the special system efficiency, VH Sub118R is capable of delivering a high standard SPL output still maintaining a great frequency response linearity.
The particular system ability to control exceptional transducer excursions keeps really low the total harmonic distortion levels (THD).
Excellent bass-punch response combined together with a really extended lower frequency reproduction make unique this interesting Sub-Bass unit, compared to double 18in. transducers standard vented enclosures.
It can be considered the ideal companion of all on-stage applications as Side Fill or Drum Fill. The VH Sub118R is one-of-a-kind, a true reference!
Lightweight and compact dimensions make this unit extremely modular for many different setups, allowing arrays of large dimensions. 
A complete range of accessories makes easier and faster all deployments such as stacked configurations with pole-mounted speakers. 
Significant construction criteria, combined with the latest technologies and innovative materials, ensure a great reliability over time. 
VH Sub118R cabinet is constructed from marine Birch-ply and has an impact and weather protected PCP (Polyurea Cabinet Protection) finish. 
It can be as well matched with all the most challenging Loud Professional Full-Range and Line-Array systems, significantly boosting their LF extension.

Applications: Large Open Air Venues, Arenas, Stadiums, Theaters, Conference Halls, Concert Halls, Large Scale Discos & Clubs.

Technical Specifications 
Frequency Range (+/-3 dB)    35 Hz - 150 Hz
Nominal Directivity (-6 dB)    Omnidirectional or cardioid (paired)
Maximum Peak SPL LF    138 dB
 Components LF    1 x 18in. Ferrite cone driver
 Nominal Impedance LF    8 Ω
 Power Handling (AES / Peak) LF    1.500 / 6.000 W 
 Connections    2 x SpeakON™ NL4
Enclosure Construction    18 / 24 mm Birch-ply
Finish    Black PCP (Polyurea Cabinet Protection) finish
Protection Grille    Powder coated 2mm Metal Rigid Grille
     Acoustically transparent Foam for discrete appearance
 Height Front (mm / in.)    609 / 23.97
 Height Back (mm / in.)    609 / 23.97
 Width Front (mm / in.)    575 / 22.63
 Width Back (mm / in.)    575 / 22.63
 Depth (mm / in.)    730 / 28.74
 Weight (kg / lbs)    50 / 110.23
Supported processing   Armonia Pro Audio Suite