The older BIC Venturis, in particular the 5's and 6's, were very good ROCK speakers, as they were decent at the highs and had an extra kick in the low frequencies. They got a bad rap from purists who disliked their boomy nature.
BIC, RTR, and other speaker companies had problems with their later offerings. I believe both these speaker companies were bought out by DAK, which used the names but cheapened the products. It wasn't like the products immediately went to hell. It was more like the Bose effect, where marketing became more important than product quality and the products became overly pricey for their capabilities. Some of these companies have been resurrected a bit since breaking free of DAK.