Safety information

Read this before you buy, and again before you build. The same rules are at the start of every README file the configurator exports, and in the assembly manual.

Product

Product	Modular Diffuser — build plans, 3D-print files and configurator for a wall of acoustic diffuser boxes
Plans version	2.0 (23 September 2026). Every export says its version in README.txt.
Box sizes	750 × 285 mm on the face, 350 / 500 / 600 / 700 mm deep
Designed by	[Your full name], [Postal address: street, number, postcode, city, country], contact@akashavidya.com
What you receive	Digital files only. You build the product yourself.
Assembly manual	modular-diffuser-assembly-manual.pdf

Intended use

An acoustic diffuser wall for studios, listening rooms and similar rooms. The boxes stand on the floor, against a solid room wall, and are anchored to it. It is not a shelf, a room divider or a free-standing object. It is not designed to carry anything but its own parts.

Weight

Box depth	One box	Wall of 4 × 7 boxes
350 mm	≈ 11.5 kg	≈ 320 kg
500 mm	≈ 15 kg	≈ 425 kg
600 mm	≈ 17.5 kg	≈ 490 kg
700 mm	≈ 20 kg	≈ 560 kg

Birch plywood at about 680 kg/m³ plus the printed parts. Your export shows the weight of your own wall.

Warnings

Tip-over hazard. A wall of boxes is heavy and taller than it is deep. It can fall forward and cause serious injury or death. Anchor the top row to the room wall at every joint, with the printed top anchors (PETG, screwed into the boxes and into the wall with plugs) or with metal anti-tip straps rated at least 50 kg each, as the assembly manual shows. Do it as soon as the top row is in place, before the fins, drawers and waves go in.
Never leave two or more rows standing without anchoring, not even for one day, not even while you build.
Only against a solid, flat room wall and on a level floor. Use wall fixings that suit your wall. In a hollow drywall, fix into a stud or use metal cavity anchors rated for the load. If you are not sure what your wall is made of, ask a professional.
At most 10 rows (2850 mm) high.
Do not climb on the boxes, lean on them, sit on them or hang anything from them. Keep children and pets away while you build, and do not let them play with the wall.
Build every box with wood glue and all the screws listed in the export. Replace a split board. Do not leave out screws.
The printed parts carry no load. Never stand a box on its waves, drawers or combs.
Print the parts as the export says (PETG or PLA, at least 3 walls). PLA softens from about 55 °C: keep the wall away from heaters, fireplaces and hot lamps.
Plywood and plastic burn. In public or commercial rooms, check the local fire rules before you install, and use fire-rated materials if they require it.
Wear eye protection when you drill and cut. Follow the instructions of your tools and of your 3D printer.

Checks

Before you build: print the test pieces and adjust the settings until everything fits as the README describes.
Once a year, and after the wall has been moved or bumped: check that the top anchors or straps are tight and their fixings are sound, that no board is split, and that no box has moved.
To take the wall down: waves first, then drawers and fins, then the boxes from the top down. Release the anchoring of a box only when you lift that box off.

Report a safety problem

If you find a mistake in the plans, or anything that could make the wall unsafe, write to contact@akashavidya.com. Safety notices and corrected plans are published on this page and sent to buyers by e-mail.

Safety notices

None so far.

Plan versions

Version	Date	What changed
2.0	23 Sep 2026	Four box depths. Drawers with tail and foot, click into the front combs, cover the fin ends. Fin stop in the back combs, fins 2.5 mm shorter than the box. Comb screws 3 × 12. Body screws at 50 and 175 mm from each edge. Anti-tip anchoring and safety rules added.
1.0	19 Sep 2026	First version, 350 mm box.

Every published version is archived with its files, manual and checksums.