[. . . ] The Xp200A links together and enhances the performance of one or more stereo pairs of the Sx100 or Sx200 full-range speaker systems and one or more Sb120a (powered) or Sb120 (nonpowered) bass modules. Full speaker system details may be obtained by requesting the individual engineering data sheets from Electro-Voice. [. . . ] Xp200A Feature Summary · A unique, low-frequency profile circuit enhances low-frequency performance of both the Sx100 and Sx200 full-range systems, and the Sb120a or Sb120 bass modules. · In a side-chain circuit, low frequencies are slightly delayed in time as they are boosted, then summed with the original direct signal. This combination of delayed and direct signals changes the relative levels of the musical fundamental and its harmonics, in an audibly attractive way. The resultant modification of timbre is as dynamic and continually changing as the musical input itself. A Low Frequency Profile control adjusts the degree of bass enhancement, up to a maximum of 12 dB. An in/out LED indicates when the circuit is active. · · Input Level and Sub Level controls facilitate easy balancing of a complete System 200TM. Electro-Voice Speakers and Speaker Systems are guaranteed against malfunction due to defects in materials or workmanship for a period of five (5) years from the date of original purchase. The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and/or coil damage resulting from improperly designed enclosures. Electro-Voice Electronics are guaranteed against malfunction due to defects in materials or workmanship for a period of three (3) years from the date of original purchase. Electro-Voice Flying Hardware (including enclosure-mounted hardware and rigging accessories) is guaranteed against malfunction due to defects in materials or workmanship for a period of one (1) year from the date of original purchase. Additional details are included in the Uniform Limited Warranty statement. Service and repair address for this product: Electro-Voice, Inc. , 600 Cecil Street, Buchanan, Michigan 49107 (616/695-6831 or 800/2346831). Specifications subject to change without notice. · · UNIFORM LIMITED WARRANTY Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or owner's manual, beginning with the date of original purchase. [. . . ] Specifications subject to change without notice. · · UNIFORM LIMITED WARRANTY Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or owner's manual, beginning with the date of original purchase. If such malfunction occurs during the specified period, the product will be repaired or replaced (at our option) without charge. [. . . ]