The First Portable Performance Loudspeaker with a Genetic Advantage. The all-new line of SoundFactor speakers has quite a family name to live up to. Just consider its closest relatives — SR-X, MPro, EON G2á legendary JBL performers in the world of professional loudspeakers; products that outperform anything else their respective classes have to offer.

Now, that same commitment to performance and technical excellence is also available with a new ingredient: affordability. Introducing SoundFactor: legendary JBL performance and quality, now at a price you'll really appreciate.

The SoundFactor SF25 is a portable, dual 15 in., 2-way speaker system designed specifically for applications in live music performance and music playback. The dual 15 configuration is especially useful for applications in which additional low-frequency power and extension is needed but adding a subwoofer to the system is not practical. A "quasi 3-way" network design contributes to improved performance in the critical mid-range.

Quasi 3-Way
Dual 15 in. systems can crank lots of low-end with their double woofers, but they represent a design challenge. The high-frequency driver and both mid-frequency drivers are all trying to produce mid-range. But since the mid-range is coming from 3 different places there's lots of uncontrolled "phase cancellation." The result is what engineers call "comb-filtering" and what listeners call "muddy mids." The SF25 crossover design solves this problem by rolling off the… read more mids from the lower woofer so it's working more like a built-in subwoofer. With only the upper woofer and the high-frequency driver covering the mid-range, the SF25 delivers "coherent summation" for clear mids.

When the application calls for extra power and low-end combined with the simplicity of a single-box system, the SF25 is the choice. For compatibility, it's equipped with Neutrik Speakon and 1/4 in. connectors. Continuous power capacity is 500 watts and peak power capacity is 2000 watts. read less