New plywood & changing fabric… please read this before purchasing!

Products that are out of stock will be stocked in the coming weeks.

QRD-Fuser

QRD-Fuser

$259.00 AUD


The QRD-Fuser (Quadratic Residue Diffuser) is a classic design and has become the standard for many high-end studios and listening rooms around the world. This particular design is calculated to provide scattering between 390Hz - 3.3KHz and has a minimum effective range (from sound source) of 1.3m suitable for smaller rooms.
The wells are calculated at varying depths which cause a number of phase shifts, breaking up the sound-waves to create a more controlled listening environment.

Suitable for:
Critical listening spaces such as home and professional recording studios, mastering studios, HiFi rooms, home theatres, live performance rooms, restaurants and bars.

Appearance:
Solid pine plywood construction.

Dimensions:
1220x467x150mm 

Diffusion:
390Hz - 3.3KHz with min. effective range min. 1.3m (from sound source). 

Weight:
14kg

Calculate your room volume (LxWxHm) to match the recommendations below. Please note this guide is general as varying surfaces areas and room use may need to be factored in. Contact us for a free consultation if unsure.


20m3 = 4x diffusers
30m3 = 6x diffusers
40m3 = 8x diffusers

Wait times: We try to keep at least a few of each diffusers in stock but generally orders take between 1-2 weeks depending on supply and demand.

Shipping calculated at checkout.

About

Stylish and world famous design.

In adequately controlling the sound within rooms, there are a number of reasons why diffusion is the right solution. As we control reverberation times further and further by way of absorption, acoustic defects which may have previously been disguised, become more obvious to our ears. In which case, diffusion is often used to preserve and enhance the ambience of a space, whilst still controlling the sound energy and are often used in conjunction with broadband absorption treatment.
QRD’s are typically placed at first reflections but are most popular on rear walls as they are prone to proximity effect. They can be used in a binary sequence to provide a more complex scattering effect.

Classic design

The same QRD design that has been used in countless studios around the world.

Solid construction

Made from a rigid 12mm plywood and a solid backing, the QRD will last a lifetime.

Suitable performance

Calculated to suit small as well as larger rooms to avoid proximity effect.

Variety of applications

Effective in crowded public spaces as well as critical listening spaces.

Responsable manufacturing

Made mostly from recycled or natural materials and are all locally sourced. Made in Melbourne.

Professionally made

Handcrafted with years of experiences, Verbox products are presentable, effective and affordable.

Brighten it up

Preserve presences and clarity in a space with the Verbox diffusion range. Over absorption can leave your room sounding ‘dead’ or claustrophobic resulting in an uncomfortable listening environment. Used in conjunction with diffusion, you can achieve a well balanced, pleasant sounding room.

Iteration of a classic design

An iteration of the classic design that has been developed with a number of favourable qualities in mind. Effective through the most critical frequency range in smaller rooms, whilst not being overly complicated, heavy or occupying unnecessary space.

Unbeatable price

Although there any many similar products on the market today, the QRD-fuser is exceptionally good value. Made from structural 12mm plywood with a rigid backing, the diffuser is affordable, effective and will last a lifetime.

Graph coming soon when we have more data

We offer a wide range of products to suit a variety of listening environments. To best help you decide what you need, the simplest way is to email us (info@verbox.com.au) with the following information.

  • Photo’s, room dimensions and details of the surfaces areas

  • Your ideal budget

  • Your location (will effect recommendation if not in Melbourne)

  • What the room is being used for

  • Any preference of colour or panel style (fabric wrapped/framed)

  • In need of installation or not

  • Room test data (waterfall graph etc) if you have it - not essential

With this information, we can provide a general recommendation for your room. Depending on your budget, location and your confidence with the process, we may offer a free site visit. Although we do recommend when possible for us to come out and test your rooms frequency response to get a more detailed assessment of your room. You can purchase this in the services section under ‘Room test and analysis’.

We also offer a range of packages under the ‘Packages’ section. These are discount packs to suit most small, medium and large rooms.

Verbox products are made to an exceptionally high standard using very high quality materials. We use a heavy cotton drill (yet still breathable) fabric, polyester acoustic batts (custom made for Verbox and E0 emissions rating), structural ply and MDF boards (also E0 emissions rating) and use bracing on all of our products when necessary.

However, they are still subject to damage by in-proper use and care. So we suggest you take the following precautions.

  • Wipe fabric surfaces with a clean, damp, lint free cloth to remove any dust. Blowing with a blower or vacuuming is also fine but less efficient.

  • DO NOT hold products from the front fabric face as your fingers around the frame can stretch the fabric.

  • For products that have rear support bars: only hold from one end of the bars where they join the panel. DO NOT hold them from the middle as they can easily pull apart. They are only there for additional support and are structurally sound if used correctly.

  • Also for products with rear support bars: when DIY installing, you must use 2x hang points (screws) to hang from on the wall and they must be 500mm apart (Lite Panels are an exception and can be used with 1x screw if you wish). Hanging too close together or just from 1x screw will result in the bar pulling apart from the panel. Again, this is normal and is not an issue if used correctly. Refer to the ‘Step-by-step Guide’ on the ‘Wall Kit’ product page for more information.

  • Do not stack heavy items on V Panels as they are not designed to hold a lot of weight and it may sag the fabric. The V Trap and Perf Traps are an exception but just use common sense.

  • Keep all Verbox products in a dry, dust free space to avoid general wear and tear. Avoid moving and dragging fabric wrapped products on hard or rough surfaces as it will scuff the fabric and could potentially tear.

  • Avoid bumping or knocking ply framed products as the ply is softer than other woods and will mark easily.

  • Avoid puncturing V Traps and Perf Traps as they are designed to be completely sealed and will lose their effectiveness.

  • Avoid placing products in direct sunlight to avoid fabric fading.

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