Rola Cone Re-Creator Cone

The Rola Cone Re-Creator loudspeaker (1926) addressed critical challenges in early audio engineering through innovative design. 

Core Design Innovations

• Piston-Like Operation: Unlike earlier cone designs, it mimicked a piston by pushing air columns rather than relying solely on vibrations, enhancing acoustic efficiency.
• Leather Suspension: Replaced rubber with thin leather for cone-edge attachment, improving durability across climates while maintaining flexibility for unrestricted motion (up to ¼ inch travel).
• Integrated Baffle System: Featured a large wooden ring to prevent rear soundwave interference, acting as both a sounding board and a baffle to minimize acoustic distortion.

Developed during the transition from horn to cone speakers, the Re-Creator exemplified Rola’s focus on refining electromagnetic designs. Its detachable cone-and-unit assembly allowed integration into custom cabinets, reflecting evolving consumer audio preferences. The 1926 model also predated field-coil advancements (introduced ~1928), marking it as a transitional product in loudspeaker evolution.

The Rola Cone Re-Creator was popular in the United States and exported worldwide, including to Australia. Rola's global reach was facilitated by its expansion into international markets.

In questo link sono elencati 12 modelli, di cui 11 con immagini e 1 con schemi.
Elenco delle radio e altri apparecchi della Rola Company, The; Oakland, CA