Infinitely Adjustable Concert Enclosures and Rigging
Read the July 2015 Voice Coil Magazine article.
( We can also manufacture Your Current Concert Cabinets/Elements with our Acoustically Engineered Composite Materials )

A New Class of Arrays--
with individually adjustable cabinet aim


Unlimited 3 Axis continuously-variable fine adjustments      Modular Assembly      Tight Cabinet Spacing

The Only array with individual cabinet 360 degree HORIZONTAL aiming Aim each of Your CURRENT Array Cabinets 360 degree HORIZONTAL
The Only array with individual cabinet 140 degree vertical aiming
Aim each of Your CURRENT Array Cabinets-- 140 degree Vertical 
The Only Array with Optional remote powered individual cabinet aiming
controls at Ground Level when flown
Assembles Vertically or Horizontally as quickly as any current array system

Cabinets do not support other cabinet's weight
for safety.   Cabinets caged for safety.
  Soundproofed Array Frame prevents ringing.   Frame can be covered with printed fabric.

"  engineering-
pleasingly ingenious, safe & simple  "

Wall of Sound-  Grateful Dead Column PA-  Todd Rundgren

The Cradle, uses your Current Array Cabinets with the Chord rigging system allowing 360 degree Horizontal and 140 degree Vertical Adjustment for Each of your current array cabinets

The Cradle

Chord can Easily be wrapped ( and inner-lit)
even when following  a J-Array soundfield

Chord produces more Sales Due To…

360 degree aiming for every cabinet on the array— for truly Precision Custom coverage. Perfect for your clients with:          

  • Permanent Installs
  • Tours into physically variable venues
  • Featuring cabinets customized to your volume and wall thickness needs

  • All Cabinets manufactured of patent-pending composite materials that Meet/Beat MDF or Plywood's Material Properties and Acoustics BUT manufactured into Any shape.  Our Cabinet materials are engineered for sound cabinet applications- less ring; very light. 

  • Spherical cabinet shape is the only shape Allowing easy 3 Axis Precision Aim.  Side benefit-- much lower external cabinet diffraction- producing more accurate, cleaner sound leading to Greater Sales.

  • Can be assembled either "ground-up assemble" for a No-Tipping Straight-Up Lift to the array’s final position OR using  "on-ground" sideways assemble, then tilted to lift position.

Why migrate your Cabinets to our Cabinets or Rigging?

For the CHORD and CRADLE, we supply Safer Rigging Caged Cabinets not reliant on the higher cabinets
to support the array weight and

Chord assembles in minutes with no rigging impedance for the install crew.

Cage breaks down to less than 36 inch long 1.5” & 1" diameter aluminum tubes for easy transportation.

Engineered for a 15-1+ Safety factor.

For permanent installs,
Chord can be easily welded and cabinets bolted.

The Chord system is Ideal

Allows 360 degree Horizontal and 140 degree Vertical cabinet aiming, unlike any other Portable Sound Stand.

No failure-prone adjusters or clamps.

Rig is Floor-standing but the 4 verticals On The Floor dramatically increases Stability.  Stand Variations include square or circle shaped horizontal struts.

Cabinets are manufactured with the World's most advanced, customized Enclosure Wall materials and are concurrently designed for use and abuse.

Manufacturing  Capability:

Trapezoidal, Curved or Rectangular Loudspeaker Cabinets to a Cabinet size of 8000 cubic foot (20 x 20 x 20 foot) from a 300,000 ft2 USA plant using protected, unique technology..

The Chord and Cradle rigging and cabinet concept are Legally Protected.
Protection Includes: the Rigging Concepts, the use of  Curved Cabinets or  Curved Accessories on Arrays to  produce accurate loudspeaker Aiming, and All Art supporting the General Concept.  The cabinet     materials and production methods are also legally protected.  Published 12/09/2014.  Patents applied.

Original Concept 07/24/1998


With The Cradle, you supply the cabinets
we supply our rigging system BENEFITS


     Where do we obtain the Chord Frames?

     US Enclosure provides frames to your cabinet requirements-- how many cabinets do you want on a frame?  What are your cabinet dimensions ?

     Can we use our existing array cabinets?

     Yes using CHORD CRADLES designed for your enclosures.

     Do we receive full acoustic benefits using
     our existing cabinets?

     YES-- normally cabinets do not require wild aim adjustments for full acoustic benefits-- typically just a few degrees to 30 degrees.

     NO-- using non rounded cabinets still broadcasts cabinet diffraction.  As a side benefit, our cabinets have the lowest exterior cabinet diffraction possible.

    NO-- without our acoustically engineered composite cabinet materials.

    Can we just have our cabinets/elements
    made from your superior and cost effective
    cabinet materials?


    What are the 3 alternatives for the array?

          1.  Our current Cabinets cradled on
               the Chord?

          2.  Our current Cabinet dimensions
               with US Enclosure cabinet wall
               materials without the Chord?       

          3.  Our Cabinet Interior-Volumes in
               curved cabinets using US Enclosure

     Do you help us engineer this?
     ABSOLUTELY 100 %

Vertical Capsule Configuration

All Feature:

360 degree infinite horizontal cabinet adjustment

60 Degree vertical adjustment at 1 degree intervals

Version 1

Vertical Capsule Configuration
Version 2

Flown Subwoofer Cabinet
Curved shape: stiffer cabinet walls produce:
less wall and rig vibration-- due to the acoustically engineered composite-material walls designed specifically for subwoofer vibration and acoustic wave absorption.



A Dynamic Array System
for Dynamic Live Acoustics
Horizontal Cabinet adjustments augment electronics

Line Array’s are the best technology for live sound but what is lacking is the easy ability to do fine physical adjustments for each cabinet to really “nail” the sound quality for a given venue.  Live Sound Engineers dealing with reality instead of theory will generally agree that a line array allowing minor ( or major ) individual cabinet adjustment properly applied will improve a venue’s sound.

Mix Magazine Online 03/01/2001:  'John Meyer,  Meyers Sound (1) : “You don't have any control over the horizontal [coverage pattern],” notes Meyer. “So if you have a line array that's 90 degrees, it has to fit the space that you're putting it in. If it doesn't fit very well… We could never use line arrays in Carnegie Hall, it's too long and narrow. You need to be able to shape the array, so it's never going to be practical for something like that.” '


Alternative Chord Cabinet Shape

Currently, audience members at various positions receive sound from different parts of the array and the frequency response will not be consistent. (2)
Line Array Manufacturers developed a variety of designs to partially minimize frequency response problems. J Array “arc source” partially fix this coverage and frequency-response problem by taking a portion of the line source array and treating the portions in ways as a point source.

We do not claim to fully correct sound issues associated with arrays but our system allows the sound engineers to have the physical adjustment tool to help allow real sound quality improvements using line arrays in the field.

The Venues where Line Source Arrays are used are never ideal. True Accuracy cannot be claimed for live sound applications when it is only demonstrable on a computer model at some specific position.  

Arrays with Fixed Horizontal Cabinets create sound patterns with issues when used in narrow areas as the sound reflects off the walls creating accuracy / imaging problems. And array sound Vertically narrow's toward the rear of a room so the strongest output needs to be pointed at the furthest seats— without reflecting off the side walls.  Each cabinet’s slight individualized adjustment,  a combined Horizontal and Vertical position adjustment can help customize the sound to a venue.

Manufacturers can optionally take advantage of the spherical cabinet shape used with the Chord designed for Horizontal/Vertical cabinet adjustments to mount higher frequency drivers producing wavelengths which are less than component spacing.  This helps reduce accuracy / imaging problems due to the same drivers on various array cabinets having different positions relative to any listener. (3)

Our design may help with...

INDOOR ARRAYS:           Directive Adjustment is desirable to further improve the ratio of direct to reflected energy at any given location.

OUTDOOR ARRAYS:        Directive Adjustment is desirable for if for no other reason that noise laws may stipulate that sound may not bleed from a performance space into adjacent areas.

US Enclosure offers 3 Pathway’s to seize the opportunity while matching your company needs.

A.  The Cradle offers your existing cabinets to have Directive Adjustment using the Chord System.

We offer the option to use our acoustically engineered composite wall materials with your existing cabinet shapes and existing rigging system.

Finally, Chord offers the ability to adapt your current cabinet volumes, wall-thickness, etc into a non-diffracting shape for which the Chord system was formulated. 


      Entire rig is aluminum, fastened with pins like
      other arrays use.  All poles are the same length.

  1. Take 4 poles and pin them together to create a Horizontal Square. 
  2. Place the Cabinet/Element onto the square.
  3. Insert 4 poles Vertically and pin them. 
  4. REPEAT... And so on.  The cabinets are caged inside aluminum uprights preventing cabinets from ever breaking away from the array.  Each cabinet/element then can be individually aimed vertically and horizontally before lifting straight up.


   The top 4 vertical poles have cable or chain loops.

   The rig is built vertically so no tipping is required
   for lifting, lowering stresses ... and as long-term
   material fatigue.

   The cabinets and frame can be painted to the
   clients taste.  For permanent installs, welding the
   frame is an option.

   Assembly will not take longer than a standard array.

   This array does not rely on the higher cabinets for
   support of lower cabinets weight.

   Cabinets can not break away from the array.

   Our cabinet materials meet or beat your existing  
   cabinet materials no matter the wall thickness.

   The entire rig breaks down into poles no longer
    than 3’ long and the entire rig is engineered to a
    15-1 safety ratio.

CHORD and Rigging created by US Enclosure (Design)
A division of US Enclosure (Manufacturing)

(1) Mix Magazine Online 03/01/2001:  John Meyer,  Meyers Sound

(2)   If a loudspeaker system is to truly control directionality, it must do it at all frequencies equally. The frequency response will vary over the coverage area... According to Ureda  ( Analysis of Loudspeaker Line Arrays JAES VOl52. No 5 May 2004) in the region where an array is behaving as a line source, the freq.response “undulates” (isnʼt flat) until the point where it no longer behaves as a line… the small 12 feet test array frequency flattened at 300 feet out!

(3)  Tony Andrews Funktion One, May 2007 :

"At higher frequencies, where the wavelength dimension is smaller than the spacing of the components in the array the loudspeakers will start behaving as a multitude of small point sources with narrowing dispersion as the frequency rises.  This multitude of point sources would be quite acceptable if the components were positioned on the surface of a notional sphere".
US Enclosure 11-19-1999


Flown High Range Driver to Subwoofer Driver Cabinet
Curved shape: Lowers diffraction from Midrange and High Frequency drivers and incorporating the benefits of the Flown Subwoofer Cabinet.