Acoustic Diffuser
Optiffuser
High-performance, high-bandwidth lightweight 1D diffuser — engineered for professional studios and critical listening environments.
High-performance, high-bandwidth lightweight 1D diffuser — engineered for professional studios and critical listening environments.
The Optiffuser is a purpose-designed 1D diffuser optimised for professional recording studios, control rooms, and high-end listening spaces. It addresses the need for broadband diffusion without compromising the acoustic integrity of the room.
Designed by Jens Eklund — audio engineer and founder of Resonator Stockholm AB — the Optiffuser combines genuine acoustic effectiveness with a lightweight, easy-to-install form factor. It is one of the few genuinely high-bandwidth diffusers available at this price point.
The 1D geometry provides directional control over the scattering pattern: mount the panels vertically for horizontal scattering (typical for rear-wall use in a stereo room), or horizontally for vertical scattering.
| Type | 1D Diffuser — high-performance, broadband |
| Panel dimensions | 1,200 × 600 mm per panel |
| Pack contents | 4 panels per pack |
| Coverage (1 pack) | 2.88 m² ≈ 31 sq ft |
| Weight | Lightweight — single-person installation |
| Minimum listening distance | Approx. 1 – 1.5 metres |
| Typical placement | Rear wall, side walls (LEDE / RFZ / CID) |
| Orientation | Vertical (horizontal scatter) or horizontal (vertical scatter) |
| Surface treatment | Can be painted — seals surface, reduces HF absorption |
| Documentation | Optiffuser Manual (PDF) |
The Optiffuser is engineered specifically for the acoustic demands of professional control rooms. It addresses one of the most critical aspects of room treatment: the termination of the Initial Sound Decay (ISD) gap.
In LEDE (Live End / Dead End) and RFZ (Reflection Free Zone) designs, diffusers on the rear wall scatter energy laterally — via the rear side walls — back to the listening position, creating a properly diffused return that feels spacious without colouring the direct sound.
Diffusers also absorb energy to some degree. Simply placing more diffusers does not "add" energy to a room — it is the combination of treatment, ISD-gap length, and the energy level of its termination that determines the acoustic result. Use broadband absorption only where needed, and preserve the energy required for a balanced, live-sounding decay field.
Read the Full Manual
The Optiffuser is available in Sweden through authorised retailers and shipped directly across the EU. For pricing details, placement advice or a direct order enquiry, get in touch with Jens.