Oswalds Mill Audio writes: “Our new field coil woofer for the Imperia bass horn system, the RD121 driver. One of the biggest field coil drivers ever made, this massive beast is now playing in our flagship Dumbo studio. These drivers took about 6 years to create, cast by 3D printed sand molds at our friend James O’Neils place in Richmond VA, OK Foundry. Rich Drysdale helped design the field coil motor structure, these drivers are really a work of art, too bad you can’t see them inside the Imperia enclosures.
