Cineol-X 224 is a free Lexicon 224 reverb, but you have to bring the ROMs

The Lexicon 224 sound is now available as a free plugin, with one catch. Cineol-X 224 rebuilds the reverb from data in the hardware's own firmware, and the download doesn't include that firmware. You have to supply it.

What is Cineol-X 224?

It's a free alpha plugin, version 1.0 Alpha, reported by Bedroom Producers Blog on 26 October. It runs on macOS 11 or later (Intel and Apple Silicon) as AU, VST3 and standalone, and on Windows x64 as VST3 and standalone. The downloads are about 127 MB on Mac and 41 MB on Windows, with no signup. Mac builds aren't notarized, so follow the included install notes.

It uses data from Lexicon 224 v4.4 and 224 XL v8.21 firmware. When you import the ROMs, the plugin runs the unit's control firmware once to prepare data for native reverb algorithms. It doesn't interpret the ROM while processing audio. The original 224 set gives six programs, including Vocal Plate and Acoustic Chamber. Load both sets and you get 22 XL programs, including halls, plates, rooms, Chorus & Echo and Multiband Delay, though the XL multiband engine is still a preview. Extras include a Space control that slows the DSP clock, a Dirt control that opens the converter filters, and optional Spillover between programs.

The developer doesn't claim it matches the hardware exactly, and BPB says calling it "the actual Lexicon in a plugin would go too far."

What do the ROMs involve?

The original 224 needs five ROM files and the XL a separate set of eleven. The plugin "rejects unsupported versions and incomplete sets." Neither BPB nor the project's README says where to get them. The README says no ROMs or prepared banks are shipped in the repository or the plugin, and is blunt about what import means: it "does not prove ownership or grant permission to redistribute ROMs or extracted data."

There's more fine print. The README says no licence has been chosen yet for the project's own files. It also says the Lexicon name only identifies the reference hardware, and that the project is "not affiliated with or endorsed by" Lexicon.

What we think

We're not lawyers, and this isn't legal advice. Here's how we read it in practice.

The bring-your-own-ROM design is the same approach game-console emulators use. The developer ships code and leaves the copyrighted firmware out. That moves the risk to you. If you dump the ROMs from a 224 you own, you're on the firmest ground available. If you download a ROM pack from a forum, the README has already told you the plugin gives you no permission. Either way, never pass ROMs or prepared banks on to collaborators.

The missing licence matters too. Without one, you can use the build, but the terms for forking, bundling or shipping it in a commercial product aren't set. For a studio, that's a reason to treat Cineol-X as a sketchpad for now. Print the reverb to audio, and keep a licensed reverb in sessions that might travel.

For most people, the realistic route to authentic 224 firmware is owning the hardware, which few do. So the honest pitch is an open, inspectable reverb engine for 224 owners and tinkerers, not a free version of a classic for everyone. BPB compares it with UAD's paid Lexicon 224, which has eight reverb programs plus chorus. That plugin includes everything in the download, and for a lot of producers that's worth paying for.