The MELLOWCLOUD® DIF is a One Dimensional Curved Shaped Diffuser Acoustic panel for Multipurpose, Auditoriums and Theatre Halls.
This is a product was devised to be suspended in ceilings or metal grids; it can be also used as fixed or motorized acoustic shells. This type of acoustic material is mainly applied in large area of application such as auditoriums, conference rooms, multipurpose rooms and airports, places where acoustic treatment with a modular continuous surface is required.

It is a diffuser material that also provides somewhat of homogenous sound spectrum absorption. The MELLOWCLOUD® DIF evolves and meets the aesthetic challenge, while also offering an optimal sound diffusion and absorption characteristics.

The architecture involves rectilinear and curvilinear lines. Flat rigid surfaces provide uneven sound pressure across the audience area. Shaping and curving the surfaces can improve the coverage of the sound diffusion; this will help the results, although it is a vast subject that requires its own tools of experimentation on case-by-case base for each project. These concepts were well assimilated into modern architectural acoustic designs, offering more generic ideas and shapes that architects could integrate into their designs.

MELLOWCLOUD® DIF provides architects and designers with wide latitude in curvilinear design. Contributing to the solution and provide curvilinear surfaces, JOCAVI provides this model in two different options; standard and custom pieces. MELLOWCLOUD® DIF can be customized as to its shape and size to better adapt to each space. Custom panels offer in a variety of types, sizes, ellipses, geometric shapes, vaults, acoustical domes, thicknesses, and finishes.

This model can be compared and combined with MELLOWCLOUD® ABS witch have the same ideology.


To customize the panel’s modulation, JOCAVI® combines a three dimensional software program with non-periodic sequence theories, which determines the best shape and size, the best arraying tilt and positioning, to be applied to insure a uniform natural sound coverage.

This Ray Tracing Software incorporates and determines the fundamental scattering diffusion rays to archive an optimal sound energy scattering.

The sound energy can be propagated to the listening positions, then the uniformity of the scattered pressures at all listening positions areas is evaluated trough simulation and the process is repeated until a satisfactory shape and solution is obtained.

After this process is then, the drawing, sent to the factory to manufacture the panel. This is crucial procedure to provide optimal ensemble for musicians and audience.



Panel consists of a 74mm (MD-EPPS 32 kg/m3), 6mm of JOCAVI exclusive composite paste (JCP® 110 kg/m3) made of micro-fibers glass and gypsum composing a special high acoustic performance layer.

A coat of a water-base paint finish is optional which provides very versatile appearance.

Each panel have only four supports/hangers with (M6 nut screw), witch is very easy to mount in ceilings or metal structures with our recommended mounting accessories. Aluminium hardware and metal cables can be provided at right size according to each installation.

The panels can be coupled to each other with our aluminium bars, and then, they can be hung together as a cluster.

It is possible apply specific lighting embedded in the panels, contact JOCAVI® for more information.

Standard and custom shapes.
Pre-curved to provide an artistic free form style of design.
Optimized shape, arraying and positioning insures uniform coverage.
Panels can be used independently or tiled side to side and front to back.
Suspended using Integrated mounting hardware and cable system (only four supports/hangers by each panel).
JCP® micro-fibers glass and gypsum reinforced and finishing, meets Class A fire rating.

Very lightweight (4 Kg/m2 - 80 mm thick panel).
Very simple and easy to install.
Size max: 2,00mt x 1,20mt (several modules can be interconnected).
Finish: Standard colour white, ready to Paint using water-base paint.
APPLICATIONS: Auditoriums, Rehearsal rooms, Performance, Multipurpose and Theatre Halls.

200 cm 120 cm 8 cm
14 Kg
180 cm
100 cm
8 cm
9 Kg


MELLOWCLOUD® DIF is easily mounted in ceilings with our suspension method composed by; metal-wires, aluminium frames, and accessories.

The panels can be hanged individually or connected together.

Depending on the orientation of adjacent panels allowing a variety of tiling options. Each panel’s tilt is independent and can be adjust to better serve the forestage coverage in the seating area.

These panels are extremely delicates and should be handled with care, they’re supplied with a plastic cover to avoid damage during handling and installation.

The product is relatively light so we can recommend two workers for handling purposes.




4x (50cm cables)
4x (M6 closed eye screw)
4x (M6 Threaded brackets)
4x (M6 open eye screw + washer)


The purpose of acoustic shells involving the orchestras is to use both the acoustic energy and sound, which were beforehand wasted in the stagebox, and redirect them towards the audience. It is particularly important how this is done. Acoustic shells therefore assure a good and
distributed angular coverage and a better balance of the diffusion values over the sound spectrum.

Acoustic comfort for a musician or musical director is fundamental. It is impossible to win a battle against a room with bad acoustics. It is a
frustrating situation for musicians, maestros and sound technicians when that happens and there is nothing within their reach that they can do. The quality of the interpretation of musical pieces may be enhanced when conditions are excellent.

The use of MELLOWCLOUD® DIF as acoustic shell harmonises the sound and enables musicians and audience to listen to each other clearly, thus making their performance pleasant and perfectly harmonious. It also allows highlighting or mildly moderating the several groups of instruments of the orchestra in accordance with the Maestro's taste.

Musicians, singers and musical directors do not tend to overuse electro-acoustics in order not to distort the natural colour of the instruments and voices.

The use of our AS® acoustic shells increases the natural level of the sound that is genuinely produced by the instruments and naturally increases the level of the acoustic pressure of the room, thus leading to a balanced diffusion throughout the whole range of the sound spectrum.


Frequency [HZ]


Similar to
RAL 9003
Also available painted in other RAL colours upon request:
Similar to
RAL 1011
Similar to
RAL 1003
Similar to
RAL 2001
Similar to
RAL 3003
Similar to
RAL 4007
Similar to
RAL 5010

Similar to
RAL 6028
Similar to
RAL 8019
Similar to
RAL 7001
Similar to
RAL 7015
Similar to
RAL 9005
Similar to
RAL 5013

* Included suspension wires 60cm, different measures upon request.


• JOCAVI® accepts no responsibility for any printing errors. Specifications can be modified without prior notice, if technical or commercial reasons so require.
© • RAL is an international independent colour standard system partner for industry, trade, architecture and design. Should be consulted before placing any order.
• The colours shown on this catalogue are only a reference and an illustration of the products finishing. The colours shown are not binding because brightness, contrast and colour balance may vary due to the printing process.
• Colours may vary due to raw-material suppliers' changes and some differences may occur in tonal range.
• Wood and Fabric products are highly susceptible to change its appearance with humidity and temperature. Close attention must be paid to the storage conditions and the acclimatization before, during and after the installation.
• Typical Indoor Comfort Standards state a temperature range of 20ºC - 27ºC (68ºF - 81ºF), and a relative humidity of less than 60%. These would be considered as normal operational levels of JOCAVI products' range.
• Despite all the standard sizes of all products, this model can be customised upon previous consultation. Sizes may slighty vary due to their production method and some inherent raw-materials characteristics.