The Brunswick Ultona reproducers came in two styles, the single diaphragm type and the double diaghragm type. They gave Brunswick their catch phrase of "All Phonographs In One", because with these reproducers, Brunswick phonographs were able to play all records available at the time.

I want to clear up a common mistake, the single Ultona played 2 types of records and the double Ultona played 3 types of records. The single and double moniker referred to the number of diaphragms, not the number of records playable.

The single Ultona played both the lateral cut records (Victor, Brunswick, Columbia etc.) with a steel or fibre needle and the wide vertical cut records (Pathe etc.) with a ball stylus. The lateral cut needles were held in place by a thumbscrew and the vertical cut ball stylus was held in place by a threaded collar.(The Pathe ball stylus could be replaced to play other vertical cut records, except the Edison type.)

The double Ultona played the lateral cut and vertical cut records mentioned above, plus on the opposite side was an additional diaphragm that had a somewhat permanent diamond stylus for playing the Edison diamond disks.

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Brunswick Single Ultona Instructions

Brunswick Double Ultona Instructions