The Prerequisite:

What is it that Logitech’s Frequency Directed Dual Drivers Technology is trying to accomplish? Few years ago, speaker manufactures started adding dual drivers instead of solely one in order to enhance sound richness. While it led to higher sound quality at the time, there was one piece of the entire dual driver puzzle that was holding back. The use of dual drivers led to unbalanced and inconsistent audio levels. Even though many of us can’t recognize these distortions, unless we are listening at the highest volume levels, this negative effect did left an empty space in the overall picture of best quality. The reason for this is that dual drivers duplicate sounds, which leads to pockets of sound saturation or voids between certain frequencies. This type of mismatch is known as lobing. The exact purpose of Logitech’s innovative and integrated technology is to eliminate from lobing effects from dual drivers.

Let’s take a few moments to briefly touch on lobing and how it relates to the history of multimedia speakers. More than a decade ago, multimedia manufacturers used to produce speakers with as many as three different kinds of drivers. These drivers – tweeters, midranges, and woofers – were integrated into the satellites in order to create a full sound effect. This meant that satellites had to produce not only the high and mid-frequency notes, but they also had to take care of stabilizing the precision of sound by acting as a subwoofer. As you can imagine, this sort of combination was welcomed in the beginning due to the lack of properly configured labs and the halt of technological advances in a certain field. As we entered the more advanced time frame, the limits of the combination of three drivers per satellite unit started to emerge. Manufacturers realized that in order to take sound clarity to the next level, they had to do something to lessen the burden on satellites.

This led to the mass production of the subwoofer. By allowing the satellites to be responsible for only mid and high frequencies, the sound quality improved significantly. The sound produced by the satellites was now fuller and richer. However, as the satellites advanced in their pathway of improvement, another issue – lobing – blocked their way in mid-path. With the FDD technology, Logitech hopes to correct the audio projection by correctly channeling the frequencies and remove the overlapping of the high frequency notes. This will supposedly remove the choppiness and the hot spots that can be heard at certain points in different locations.

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