Digital Sound Projectors
A Digital Sound projector employs technology that utilizes a series of small speakers that can be assigned to various channels and project sound to different points in a room, all within a single cabinet. A digital sound projector houses all needed amplifiers and audio processors, and some also include built-in AM/FM radios and inputs for multiple audio and video components. The surround effect is actually very good, considering everything comes out of one box. The only additional item required might be an external subwoofer. For more details on digital sound projector technology, check out the Yamaha Digital Sound Projection Page.
Surround Bars
A Surround Bar is a similar concept which utilizes speaker design and, or various types of virtual surround, or generic surround audio processing, that creates a wider sound field from a single speaker cabinet housing a left, right, and center channel speaker. Surround bars typically need an external amplifier or home theater receiver. The surround effect is not quite as good as a digital sound projector, but is still a viable, cost effective, and space-saving option for many consumers, especially in a smaller room.
3-in-1 Speaker Systems
A 3-in-1 speaker system is single cabinet that incorporates a left, center, and right channel front speaker. 3-in-1 speakers are similar to surround bars, but, depending design, may not have surround sound properties. Such speakers still need amplification from an external source, such as a receiver, as well as extra speakers for surround sound and a subwoofer. However, what makes this option desirable for some is that it decreases "speaker clutter" by combining the three main speakers into one cabinet that can be placed above or below a flat panel television set. Quality of these systems vary, but the concept is very appealing, in terms of style and saving space.
For some suggestions in all three product categories, check out my current suggestions for Digital Sound Projectors, Surround Bars, and 3-in-1 Speaker Systems.
Final Take
Whether a novice looking for that first home theater system, an experienced user looking for a second system for a bedroom or office, or trying to save money on a home theater system in tough economic times, a Home Theater-in-a-Box, Digital Sound Projector, Surround Bar, or 3-in-1 Speaker System might be just the right design and budget solution.
Also, did you know that a PC can be a part of a home theater? Find out more on this from Mark Kyrnin, About.com for Computers:
Multimedia, Media Center and Home Theater PCs and Best Home Theater PCs.
For another perspective on home theater system options, also check out an article by Gary Altunian, Home Theater Guide for Stereos: About 2.1 Channel Home Theater Systems.
