DEMON SPEAKERS
Glowing Speaker Enclosures for the C3 Corvette (1968–1982)

The Rear Cabin Has Always Been the Weak Point

Every C3 owner knows the problem even if they've never said it out loud: the rear cabin is either dark and dead, or on later bubble-window models, it's just wasted space behind the glass. Nobody made a speaker enclosure that fixed both problems until now. Nobody made one that looked like it belonged in the car either.

What It Actually Is

Demon Speakers are 3D-printed speaker enclosures, custom-fit for the C3 hatch, with Pioneer A-Series 6×9 speakers pre-installed and six 12V LED sources built into each box. The finish is textured to mimic OEM plastic — this isn't an aftermarket part that looks bolted on, it looks like it came with the car. Plug it in and it glows red, evenly, with no dead spots.

Why It Works

On late C3s with bubble windows, the glow is visible straight through the glass — turns dead space into a feature people notice from outside the car. On early C3s, it does something more practical: it eliminates the dark, flat rear cabin entirely. Either way, the result is the same conversation-starter at every show and every stoplight: nobody else has this in their car, because nobody else makes it.

Why Nothing Else Does This

This is the world's first glowing speaker enclosure built specifically for the C3. Universal 6×9 boxes exist. Aftermarket lighting kits exist. A part that's engineered to fit your exact hatch, pre-wired, and pre-loaded with real speakers — built for one car, done right — doesn't exist anywhere else.

What You Get

  • Pioneer A-Series 6×9 speakers, pre-installed

  • 12V LED lighting, pre-wired, 6 sources per enclosure

  • All mounting hardware included

  • Plug-and-play — no soldering, no guesswork

  • Custom fit for the C3 hatch, no trimming required

Price: $400.00

How It Grows With You

Demon Speakers are part of the full KTB LED Art build system — they pair clean with any other glowing KTB piece already on your car, so this isn't a standalone mod, it's the first piece of a build that keeps getting better.

The Real Cost of Not Getting This

Six months from now your rear cabin is exactly the same — dark, flat, forgettable — while every other C3 at the next show has stock everything. The parts that make a car memorable are rarely the ones under the hood.