Description
The SP 4BX is a quasi three-way speaker system comprised of two 15″ Black Widow BWX SF series woofer with high strength cones, and an RX 22 CT compression driver loaded onto a constant directivity Quadratic Throat Waveguide.
The SP 4BX has a trapezoidal-shaped enclosure, which reduces the buildup of standing waves inside the enclosure to minimize mid-bass and midrange coloration. The enclosure is constructed of a hardwood panel coated with a polyurea finish for increased durability and ruggedness. Casters are incorporated to improve portability. A full-length, wrap-around perforated steel grille protects the front of the enclosure.
The two-way system consists of two 15″ Black Widow BWX SF series woofers with high strength cones and dust caps. The woofer section is capable of over 1,000 watts of continuous power handling (AES Std 2-1984). The high frequencies are handled by a 2″ RX22CT titanium diaphragm compression driver utilizing ferrofluid cooling. This superb driver is coupled to a Quadratic Throat Constant directivity waveguide (U.S. Patent #6,059,069) to provide smooth, even response, low distortion, and good high-frequency dispersion. This horn has an asymmetrical vertical polar response, aiming the main energy lobe down 10 degrees so it is aimed at the audience instead of over their heads. This reduces ceiling reflections, ensuring greater clarity and gain before feedback.
Full-range input connection to the system is made via two 1/4″ phone jacks and a four-pin twist lock connected in parallel, and bi-amping flexibility is provided via an internal jumper that can be accessed by unscrewing and removing the input cup. The internal passive crossover features the Peavey-exclusive Sound Guard protection circuit for the tweeter and an advanced topology crossover with high-performance components to provide high power handling and reliability. Sound Guard provides long- and medium-term driver overload protection without impairing musical transients or dynamics on either the midrange or the tweeter when the system is used full range or when it is bi-amped. The crossover provides driver roll-off and protection as well as driver EQ for the woofer and horn for a clean, clear and smooth response. High-quality, reliable crossover components include polypropylene capacitors and high-current inductors. The optimal integration of the crossover with the selected drivers results in a smooth frequency response from 52 Hz to 18 kHz.
Despite its compact dimensions, this system can produce very high sound levels and handle 2,000 watts program power, resulting in high articulation and long-term reliability.
This unit is not designed for overhead suspension. Four large rubber feet are included on the bottom for floor use.
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