Cable TV Firm Acquired : Broadcasting: Dimension buys Crown Valley, a small Laguna Niguel firm, tightening its control of South County.

Dimension Cable Services announced Tuesday that it has acquired Crown Valley Cable Television, a small cable system that serves part of Laguna Niguel.

Dimension, a Times Mirror Co. subsidiary, will gain about 1,200 customers, giving it 133,000 county subscribers. Times Mirror Cable has about 1.1 million subscribers nationally.

The price of the acquisition was not disclosed.

Crown Valley Cable is a subsidiary of Jones Spacelink Acquisition Corp. of Englewood, Colo. Its Laguna Niguel system was “one small pocket in the middle of our service area,” said Susan Ritchie, a spokeswoman for Times Mirror Cable in Irvine.

The acquisition will leave only Leisure World in Laguna Hills and several mobile-home parks as the only South County areas not covered by Dimension, she said; they have their own contracts with other cable operators or are covered by private satellite transmissions.

Already, changes have been made in the channel lineup because of different copyright arrangements between the two cable operators. WWOR-TV, a New York-based superstation, will be replaced by WGN-TV in Chicago; financial network KWHY will be replaced by CNBC, Ritchie said.

On May 7, customers will receive Bravo, the fine arts channel; classic movie network American Movie Classics; the Cable Satellite Public Affairs Network, and pay-per-view channels.

Crown Valley subscribers pay $16.95 per month for basic cable service. Other Dimension subscribers pay from $20.69 for a similar level of service to $26.27 for expanded-channel basic service, depending on whether they need a cable box and remote control.

A monthly rate increase for Crown Valley subscribers is not immediately planned, Ritchie said.