0000903112-98-002076 424B3 1 19981221 AMPEX CORP /DE/ 0000887433 3663 133667696 DE 1231 424B3 33 333-63921 98773015 500 BROADWAY MAIL STOP 3-36 REDWOOD CITY CA 94063-3199 6503672011 500 BROADWAY MAIL STOP 3-36 REDWOOD CITY CA 94063-3199 AMPEX INC /DE/ 19940505 AMPEX INC 19930328 424B3 1 000090311298002076-001-seq1-424b3.txt PROSPECTUS