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This is because the problems associated with high quality radio reception are located not internally, but external to the receiver itself. Unfortunately, the AM/FM tuner portion of the source unit has been locked into the same particular format for almost twenty years.Įven though tuner design has been riding the same wave of technological advancement as that of the CD player, the same basic reception problems plague radio now as it did two decades ago.
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It is interesting to note that in almost every instance, breakthrough improvements in sound quality have been accomplished by changing the medium in which sound is reproduced. Since then, this trend towards space-age technology has continued at an ever increasing pace. Random track selection, extremely high dynamic range, superior signal to noise ratio, flat frequency response, and low distortion are some of the features that made the CD player an audiophiles dream come true. The most significant advancement in high-fidelity auto sound source units came in 1984 with the advent of the automotive compact disc player. In short order, Dolby, Dolby B, and Dolby C were added to an ever growing list of features sported by most AM/FM Cassette decks. Manufacturers were only too happy to oblige consumers with better and better sound. Eight track tape players were introduced only to see their demise a few short years later with the introduction of the cassette tape player.
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Clearly, a flurry of engineering, research and development, and marketing effort was being expended in tremendous proportions. Innovation after innovation and breakthrough after breakthrough were soon made evident in the auto sound aftermarket. At this point, the demand for better quality sound began to snowball. It wasnt long before most automotive sound systems boasted head units with both AM and FM reception capabilities. Better frequency response, less noise, greater dynamic range, and stereo broadcasting contributed to make FM an almost overnight success. With the introduction of FM radio came a significant improvement in the fidelity of auto sound systems.
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This, in conjunction with the spirit of free enterprise, paved the way for developing a better medium for broadcasting sound. Its limited bandwidth, poor frequency response characteristics, and susceptibility to natural as well as man-made noises made for a poor means of transmitting high-fidelity sound. Initially, AM radio was the only technology available. During this period, head units have evolved progressively from primitive to todays state-of-the-art technical marvels. In the past twenty years or so, the auto sound enthusiast has experienced a quantum leap in the fidelity obtained from his or her sound system. Originally appeared in the September/October 1989 issue of Car Stereo Review magazine.