How to Power and Dim Your LED Light Panels for Stone Backlighting

Magnitude M-Series dimmable LED power supply for 12v and 24V DC systems
Magnitude M series, LED dimming power supplies

When lighting a stone slab or any translucent material from behind, having the right power and dimming setup is essential. Even the highest-quality LED panels won’t perform properly—or could flicker—if the power delivery is incorrect.

At Nu World Custom Lighting and Design, we’ve been perfecting backlit systems across North America for over 15 years. Here’s the essential info you need for powering and dimming your LED panels flawlessly.

1. 12V DC vs 24V DC – Choosing the Right Voltage

Our LED panels most commonly use 12V DC, which works well for small to mid-sized runs. However, for longer distances or larger setups, 24V DC is often more efficient and reliable, reducing voltage drop.

We aim for simplicity: if a single power supply can handle everything, that’s our preference. Otherwise, we’ll recommend multiple zones to keep wiring clean and controlled.

2. Dimming Done Right—Our Go-To: Magnitude M-Series

When dimming is needed, our first choice is the Magnitude M-Series dimmable driver, which is compact, reliable, and compatible with most standard wall-mounted dimmers. These phase-dimmable magnetic drivers support both 12V and 24V outputs and come with built-in circuit protection.

View the full spec sheet here: https://magnitudeinc.com/products/constant-voltage-drivers/m-series/

We’re happy to send over the specification documentation upon request. While we can evaluate other dimming systems on a case-by-case basis, we strongly recommend sticking with the M-Series to ensure compatibility and installation reliability.

For simpler installations, we also provide plug-in, non-dimmable drivers.

Standard wall plug-in, power supplies that are shipped standard with every order of LED panels

3. Wiring Practices—Prioritize Quality

Voltage drop is the most common reason for dimming panels to appear dim or uneven. To combat that:

  • Run 10 or 12-gauge wire for any distance over 10 feet.
  • Place drivers as close to the panel as feasible.
  • For extended distances, switching to 24V systems can be more efficient.

We always suggest consulting an electrician for the final wiring details, but we’re available to review your plans and recommend best practices.

4. Power Supply Zones—Keep It Clean, Keep It Simple

Ideally, one power supply per layout is easiest. However, for larger areas like double islands or backlit kitchen and backsplash combos, having separate dimming zones allows more customized lighting control.

5. Quick Recap — What We Recommend

  • Default to 12V DC, switch to 24V DC for long runs
  • Use Magnitude M-Series dimmable drivers if dimming is required
  • Default to 10–12 AWG wire on runs over 10 feet
  • Non-dimmable drivers provided for one-button setups
  • Breakdown zones when needed for larger layouts

We’re experienced with installers across both the U.S. and Canada and support your team with custom dimming advice, layouts, and driver placement.

Need Help with Technical Documentation?

Just send us your project dimensions or drawings, and we can advise on wire gauge, driver placement, and zone configuration. We can also email you full spec sheets for the Magnitude M-Series drivers.


Ready to build your dream backlit kitchen or feature wall?

Nu World ships LED panel systems across the United States and Canada — from Los Angeles to New York, Dallas to Miami, and everywhere in between. With over 15 years of experience, our team can help you bring your design to life with expert support and smooth delivery.

Contact us today to get started with a quote, layout consultation, or to request a spec sheet!