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QRD-N1/N2 quadratic-residue diffusers scatter sound across a broad angle using wells whose depths follow a quadratic-residue sequence. Machined from rubber wood or multi-layer board and finished with veneer, they are the reference tool for controlling slap echo in critical listening spaces.
| Property | Value |
|---|---|
| Name | QRD-N1/N2 Diffuser |
| Structure | Rubber wood / multi-layer board + veneer |
| Substrate | Rubber solid wood, pine wood etc. |
| Finish | Wood skin / paint |
| Specification | 600 × 600 / 1200 × 600 / 1200 × 1200 mm; thickness 50 mm |
| Effective frequency | 100 Hz – 5000 Hz |
Recording and broadcast studios, home cinemas, performance venues and rehearsal rooms.
| Item | Detail |
|---|---|
| Minimum order quantity | Quoted per project — no fixed minimum for a documented layout |
| Production lead time | 15–25 working days from order confirmation |
| Packaging | Flat-packed, 5 pieces per carton |
| Container loading | 20′ GP ≈ 800 pieces |
| Terms | EXW Shanghai · FOB Shanghai · CIF on request |
| Payment | 30% deposit with order, balance against B/L copy by T/T; L/C at sight on request |
Component test reports are issued to our manufacturing partners rather than to MST. Authorised copies, including laboratory and certificate numbers, are released with every quotation.
A half-scale diffuser section is despatched free of charge within 7 working days so you can check the geometry and the finish.
Email your drawing, panel schedule or a square-metre count to sales@mstacoustics.com, or send the enquiry form on this page. We reply within one working day with pricing, lead time and freight options. Datasheets, colour charts and installation guides are collected in our technical resources library.
N1 and N2 — how do they differ?
They are different sequence periods; the choice sets the diffusion bandwidth. We advise from your room dimensions.
Can panels be butted into a large array?
Yes — arrays are seam-aligned for continuous diffusion.
Is custom sizing possible?
Yes, well depths can be re-calculated for other frequencies and module sizes.
Clear sound, clear mind.
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