Primacoustic RAZORBLADE Data Sheet

ENGINEERING DATA SHEET

RAZORBlADe

The Razorblade™ is a 24” x 48” x 8” (61cm x 122cm x 20.3cm) quadratic
residue diffuser (QRD) that will effectively break up standing waves and

directional reections to provide a sense of air and increased space in any

room. Ideally suited for recording studios, theaters and critical listening
environments, the Razorblade features a series of 17 wells of varying
depth that combine to effectively scatter frequencies as low as 400Hz.

The Razorblade is constructed using a combination of furniture-grade

plywood for durability, and medium density berboard slats for increased
rigidity and mass. Ships fully assembled in an attractive black nish.

SPECIFICATIONS:

ORDER NUMBER Z840-2400-00

FRAME MATERIAL Baltic Birch outer frame, MDF inner

DIMENSIONS 24” (610mm) x 48” (1219mm) x 8” (203mm)

WEIGHT 75.1 lbs (34.0 kg)

COLOR Black, paintable

IMPULSE RESPONSE TEST:

Graph-1: No Diffusion

Early Reection

Time

Secondary

Reection Peak

Reverb Decay

Graph 1:
Room without Diffusion

The rst spike represents the
room’s early or primary reections.

The second spike indicates the

secondary reections or room

ambience.
The secondary is a full 10dB louder

than the early reections and most

of the energy is bunched up at one
point in time showing a peak.

Graph-2: Razorblade Quadratic Diffusion

Early Reection

Secondary

Reection Peak

Reverb Decay

Time

Graph 2:
Room with Diffusion

Diffusion works by dispersing
peak acoustic energy and
spreading these spikes over
a broader time span, creating

secondary reections that decay

gradually and evenly. Diffusion is
perceived as a natural wash of
reverberation.

(203mm)

8”

48” (1219mm)

24” (610mm)

8”

(203mm)

APPLICATIONS:

Diffusers on the rear wall span the width of the listening position and break up front-to-back waves.

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Primacoustic is a division of Radial Engineering Ltd. • 1588 Kebet Way Port Coquitlam, BC V3C 5M5 • Tel: [phone] Fax: [phone]

www.primacoustic.com • [e-mail] • Primacoustic Engineering Data Sheet • Part #R870 2200 00 • Copyright © 2016 • Subject to change without notice.

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