Note
QST, Feb 1951, p. 4.
QST, Sep 1954, p.100.
Allied Radio catalog 1955 (copyright 1954), p. 187. (R-46A)
QST, Dec 1955, p. 4. (R-46B)
Allied Radio catalog 1956 (copyright 1955), p. 192.
Allied Radio catalog 1957 (copyright 1956), p. 241.
Allied Radio catalog 1958 (copyright 1957), p. 265.
Allied Radio catalog 1959 (copyright 1958), p. 371.
Ten inch speaker with 3.2 Ω coil. Includes a matching transformer for 500/600 Ω input.
R-46A deletes the matching transformer.
R-46B appears to the the same as R-46A.