A cable-TV company agreed to be acquired.

Spectradyne said it agreed to be purchased by a group that includes the Dallas investment firm Hicks & Haas and the Fort Worth, Tex., investment partnership Arcadia Partners. The cash and securities offer was valued at $46 a share, or a total of $452 million. Spectradyne, based in Richardson, Tex. is a leading provider of cable television and pay-per-view movies to hotels via its Spectravision system.