1 PAIR JBL SPEAKERS DUAL 15 AND A HORN SoundFactor SF25 from JBL Professional is a portable two-way speaker system with two 15” low frequency transducers. Intended for live music and music playback/DJ applications, the SF25 reflects the increasing market acceptance of the dual 15” configuration. In reality, this is more of a three-way system in that the lower woofer is actually rolled off at a lower frequency than the upper woofer. While this results in a more expensive network, the improvement in mid-range performance makes it worthwhile. The SF25 is especially useful in applications where additional low frequency power is needed, but subwoofers are not practical Measuring 1092 x 464 x 432 mm (43 x 18¼ x 17 in) and weighing 42.6 kg (94 lbs.), the SF25 has a power capacity of 500 watts (2000 watts peak) and maximum SPL of 133 dB. SoundFactor’s advanced network design for its crossover includes heavy gauge wire inductors for low distortion and SonicGuard® high-frequency driver protection. The SF25 is constructed of carpet-covered, ¾” MDF – a material that is structurally and acoustically superior to the particleboard used by many competitive products. All-metal handles and an 18 gauge, full metal grille are also used.