A countertenor is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types.
Types of Compound Bows. Compound bows are classified by the type of cam system they use (called the bow eccentric.) The most popular types of compound bows on the market are Single Cam (sometimes also called One Cam or Solocam), Hybrid Cam, Dual Cam and Binary Cam. Less common designs like Quad Cam and Hinged are a little harder to find.
Chances are, youâve already seen compound bows in action. Different types of compound bows have found their way into several blockbuster movies like Rambo: First Blood Part II, Rambo III, Charlieâs Angels and Blade Trinity. One of the main advantages of compound bows over traditional bows is their durability.