User manual PEAVEY AAM 580 DATASHEET

[. . . ] The spider and surround are bonded to the frame with a high strength toughenedcyanoacrylate adhesive, which is also used to bond the dust cap to the cone. The magnet structure includes subtle changes to its geometry that improve power handling. While it appears the same as the standard structure, and replacement baskets from the '08 BWX series will fit on standard BW magnet structures, the improved power handling will be compromised if the standard structure is used. These new drivers also adhere to the familiar features of Black Widow products: cast aluminum frames, replaceable basket assemblies, Rubatex gaskets and high reliability, spring-loaded terminals are all used. APPLICATIONS The 1508 and 1208 drivers are excellent choices for a wide range of sound reinforcement, high-level playback, subwoofer, and monitor applications. [. . . ] Because the 1208sps's low frequency output is limited, it should be used along with a subwoofer when response below 60 Hz is needed. The best application for the 1208sps is in compact enclosures and very high quality mid-bass/mid-range reproduction at high sound pressure levels. The 15" drivers can work with crossover points as high as 2. 0 kHz but work best below 1. 5 kHz. The 12" drivers are usable to 3. 5 kHz but perform best below 2. 5 kHz. Vents used in the examples require standard Schedule 40 PVC pipe for vent construction. The pipe should be dadoed tightly into the back of the baffle and glued firmly in place with high quality epoxy or high strength industrial grade hot glue. Rough up the outside of the pipe to improve the glue bond. Be sure to account for the displacement of the vent, bracing, horn (if used) and woofer or your enclosure before building it, or it will be smaller than its intended volume. This can reduce bass output and mis-tune the enclosure. Line the inside of the enclosure with polyester fiber batting such as quilt stuffing. The batting material should conform to California bedding fire codes. Attach the batting with spray adhesive or staples, and keep it away from the end of the vent tube where it could be pulled in by air flow. FOR 1508-8he: Small vented enclosure Small box, big voice. Very high efficiency and good bass performance in a small enclosure. Medium vented enclosure Super-high efficiency in a popular enclosure size. Great choice for use in a full-range system. Super efficiency and strong bass performance to an F3 of 50 Hz. However, for subwoofer-only use the sps and cu versions which are better performers. FOR 1208-4/8sps: Sealed enclosure Excellent choice for a dedicated mid-bass/mid-range in a multiway system, or stage monitor. Small vented enclosure Very small system with excellent voice range perforance. Great choice as the mid-range of a sub/satellite system. Large vented enclosure Still not all that large, with very usable bass response. F3 is 61 Hz. PARAMETER DEFINITIONS Znom: The nominal impedance of the driver in Ohms. [. . . ] SPL: Typical sound pressure level at 1 Watt, 1 meter. no: Electrical-to-acoustical conversion efficiency in percent. Vd: Air displacement of the driver from negative Xmax to positive Xmax, in milliliters. Pmax: Maximum continuous program power in Watts. [. . . ]