Detail 01
4 inches thick
Doubling thickness extends useful absorption noticeably lower, into the low mids where 2" panels stop working.
Product detailSKU #1273887989402
Auralex4" Studiofoam Wedge 2'x2'x4" Panels 6-Pack Charcoal 4"
1/2
Independent shopping perspective
The Korena take
Six 2'x2' wedge panels at 4 inches thick with an NRC of 1.10. The thicker option, for reaching further down into low-mid frequencies.
Strong match
Who this is for
- Rooms where 2" foam left boxiness in the low mids
- Corner placement, straddling walls to catch more low end
- Drum rooms and loud sources needing deeper absorption
Consider the trade-offs
When to look elsewhere
- Anyone needing wide coverage — six panels is 24 square feet
- Tight spaces where 4 inches of wall projection gets in the way
- Sound isolation between rooms
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
NRC 1.10
Averages high absorption across the tested range. Above 1.0 reflects the edge exposure of the test panel, not extra material.
Detail 03
6 panels, 2'x2'
24 square feet total. Treats key reflection points or corners, not a whole room.
Detail 04
Charcoal gray
Reads as neutral against most wall colors and shows dust less than lighter finishes.
Detail 05
Wedge profile
Angled face scatters direction. Alternating panel orientation on a wall spreads that scatter more evenly.
Final check
Know before you order
- 01Adhesive not included — Foamtak or Tubetak sold separately
- 02Panels sit 4 inches off the wall; check clearance near doors and desks
- 03Six panels is a supplement, not full room treatment
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is 4 inch worth double the price of 2 inch?
If your problem is boxiness or thickness in the low mids, yes. If you only hear harsh high-frequency echo, 2 inch does that job for less money over more area.
02Will six panels treat my room?
Six panels is 24 square feet. That covers first reflection points or a couple of corners. Most rooms need more total coverage to hear a full change.
03Can I use these as bass traps?
Straddled across corners they help in the low mids. True bass control below roughly 100Hz needs deeper or denser absorbers than foam.
04What does NRC 1.10 actually mean?
It is an averaged absorption rating across mid frequencies. Higher is more absorptive. Ratings above 1.0 come from how edges are exposed during testing.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color Finish
- Gray
2 detailsOther
- Nrc Noise Reduction Coefficient
- 1.10
- Suggested Adhesive
- 1 Foamtak or 2 Tubetak
