VH Infra218R aspects

VH Subwoofer Series VH Sub118R VH Sub218R VH Infra218R VH Sub218H VH Sub121H 
VH Infra218R is a special Infra-Bass unit housing two long excursion 18in. direct radiating transducers mounted in two separated Bass-refex tuned enclosures.
Vertically formatted Infra218R features the two opposite LF transducers facing each other and one physically facing up in the trapezoidal cabinet bottom side.
This particular "V-shape” design allows to obtain a larger unique reflex port exactly in the cabinet middle, maximizing the system efficiency in the lower frequency response.
The reflex port center alignment increases more the system performances due to its exponential front loading path, specially when coupling more units.
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 the frequency response down to 25Hz.
The same cabinet shape of VH-emotion series allows perfect ground stacked configurations.
Special is the speaker design, it allows to achieves an exceptional benefit controlling the lower frequencies response and significantly reducing the energy radiating towards to the rear. 
Thanks to the system efficiency the VH Infra218R is capable of delivering a high standard SPL output still maintaining a great frequency response linearity.
The system ability to control the exceptional transducer excursion keeps really low the total harmonic distortion level.
Significant construction criteria, combined with the latest technologies and the innovative materials, ensure a great reliability over time. 
VH Infra218R cabinet is constructed from marine Birch-ply and has an impact and weather protected PCP (Polyurea Cabinet Protection) finish.
It has been expressly designed to be combined with the VH e-motion Series (VH MH210H / VH Bass215H / VH F12H) as perfect integration, further extending the system response.  
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)    25 Hz - 150 Hz
Nominal Directivity (-6 dB)    Omnidirectional
Maximum Peak SPL LF    147 dB
 Components LF    2 x 18in.  Ferrite cone driver
 Nominal Impedance LF    2 x 8 Ω
 Power Handling (AES / Peak) LF    2 x 1.500 / 2 x 6.000 W 
 Connection    2 x SpeakoON™ NL4
Enclosure Constructions    18 / 24 mm Ply Birch 
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.)    1160 / 45.66
 Height Back (mm / in.)    1160 / 45.66
 Width Front (mm / in.)    815 / 32.08
 Width Back (mm / in.)    395 / 15.55
 Depth (mm / in.)    830 / 32.67
 Weight (kg / lbs)    108kg / 238.1
Supported processing   Armonia Pro Audio Suite