2 Pack Styrofoam Acoustic Diffuser SIRIUS-S 20"x20"x6" 2D
2 Pack Styrofoam Acoustic Diffuser SIRIUS-S 20"x20"x6" 2D
Couldn't load pickup availability
Polystyrene sound diffusers are affordable, lightweight, and customizable for improving acoustics by reducing echo and enhancing sound quality. Made from expanded polystyrene (EPS), they are ideal for home studios, theaters, educational spaces, and DIY projects.
ITEM SPECIFICS:
• Function: Diffusion, Scattering, Reflection
• Frequency Range: 625 Hz - 5000 Hz
• Material: EPS
• Size: 20x20 inches (50x50 cm)
• Thickness: 6 inches (15.3 cm)
• Color: White (paintable)
• Price: For 2 units
APPLICATIONS:
✔ Home Studios: Increase recordings affordably.
✔ Home Theaters: Improve audio clarity.
✔ Educational Spaces: Better sound quality in classrooms.
✔ DIY Projects: Ideal for acoustic experiments.
INSTALLATION:
🔵 Place strategically for best results.
🔵 Combine with other treatments for optimal performance.
Fast Delivery
Fast Delivery
shipped within 5-10 business days
Expert Support
Expert Support
personal advice from our acoustic specialists
Quality Guarantee
Quality Guarantee
durable materials, tested for professional use
How many panels do you need?
Every room is different. As a rule of thumb, covering 20–30% of your ceiling with acoustic panels already makes a big difference.



What our customers say
“We installed 6 panels in our office and the difference is incredible. The echo is gone and meetings are much clearer.”
“Fast delivery and easy installation. The panels look stylish and really improved the sound in my studio.”
“Great product! I ordered 4 for my living room. Big improvement, I may add more later for maximum effect.”
FAQ
How long does delivery take?
Most products are shipped within 5–10 business days. Larger or custom orders may take longer. You will always receive a tracking link once your order is dispatched. This is because all of our products are made direct in the factory.
Do you offer installation services?
Yes. Qoustic provides professional on-site installation by appointment only. This ensures your absorbers and diffusers are placed for optimal acoustic results.
Can I get advice before purchasing?
Absolutely. Our team of audio specialists is available to guide you in choosing the right products for your studio setup.
What payment methods do you accept?
We support all major payment methods including credit card, PayPal, and bank transfer.
Do Qoustic products come with a warranty?
Yes. All products come with a standard warranty against manufacturing defects. Details are specified per product page.
Can I return a product?
Yes. Unused products can be returned within 14 days in their original packaging. Please contact us before returning your order.
Do you also ship internationally?
Currently, Qoustic primarily serves The Netherlands, Belgium and Germany. International shipping is possible upon request.