Are all 3 12" woofers the same? Even if you think they are, I'd still label which is which, and reinstall them back to their original correct positions. The reason being, Brian Cheney seemed to often use midbass and bass drivers in his speakers, and it wasn't always visually apparent which were which? Sometimes a midbass had smaller or magnets with less magnetic gauss. Woofers might have dual magnets or different tuning, using added weight. So, tread carefully, and document your project. Notes and labels and pictures. You'll probably need it. Those are complex speakers.
