Pair of CNC cutted, beautiful MADSUMO CLEAR SOUND Quadrex grilles for vintage JBL L100 / L100A / L100 Century speakers

with JBL metal emblems mounted!

Why Our Foam Grilles Last for Years — The Importance of UV Protection

Unlike some cheaper alternatives made from polishing sponge materials (not the special acoustically neutral foam developed specifically for our company), our foam grilles are designed for speaker use and long-term durability.

One of the biggest differences is not just the foam itself, but also the professional UV-protective coating we apply. Our grilles are made using specialized sound-neutral foam, and then coated with a custom-developed UV-resistant finish.

Foam that is not coated will quickly degrade when exposed to sunlight — becoming brittle, discolored, and visually unappealing within just a few months. This is a common problem with materials not intended for speaker applications.

Thanks to our materials and UV coating, our grilles maintain their deep color, shape, and premium look for years, even in bright rooms or near windows.

When you choose our grilles, you're not only getting an authentic retro style — you're investing in a product built to last!!!

Grilles are made on the CNC machine from developed especially for us special sound neutral foam with open cells, so air and sound can move easily in both ways without any problems.

We offer special stands, walnut frames for L100, check our other listings or contact with us.

We are a real legal company from Europe, so you can always count on our help. You can be sure that you are buying the highest quality product with a 2 year warranty, not home-made low quality grilles.