User manual PEAVEY 1508-8HE BWX ASSEMBLY

[. . . ] The dust cap is also made of the same extremely strong material. Voice coil assemblies on the new drivers use thermoset-insulated aluminum or copper ribbon wire, bonded onto an incredibly durable, heat resistant polyimide composite former. The coil wires are solderless diffusion welded to high-conductivity OFHC copper foil leads, which are embedded inside the former assembly and soldered to the tinsel leads with high temperature silver solder. The solder joint is then coated with a special thermally-conductive silicone adhesive for encapsulation and heat dissipation. The voice coil assembly is bonded to the Kevlar cone and new super-tough nylon composite spider using a thermoset epoxy originally developed for attaching nose cones on ICBM missiles ­truly an aerospace-grade adhesive. [. . . ] When building a bandpass enclosure, design a panel or door to be removable for access to the woofer. Use foam weather-strip to seal the panel along with enough screws and bracing to prevent leaks and buzzes. Fill the sealed volume loosely with polyester fiber, but leave the vented volume empty. Place the magnet of the woofer in the vented side for improved cooling. Peavey does not supply hardware required for the manufacturing of flying systems, and recommends that builders should not suspend or fly any enclosure not certified for such applications. These instructions are a general guideline for design. Proper construction techniques, good planning and common sense will result in a reliable, high quality, high performance system. Peavey in no way accepts liability for any damage, accidents or injury that may result from construction or use of enclosures using this information. Features and specifications are subject to change without notice. enclosure together for optimum performance in any application. SPECIFICATIONS Model Name: Part #: Size: inches/mm 1508-8sps 00452850 15" / 380 mm nominal Frame OD 151/4" / 387 mm Bolt circle 14-9/16" 370 mm, 8 holes 1508sps-4 00452860 15" / 380 mm nominal Frame OD 151/4" / 387 mm Bolt circle 14-9/16" 370 mm, 8 holes 1508-8cu 00452870 15" / 380 mm nominal Frame OD 151/4" / 387 mm Bolt circle 14-9/16" 370 mm, 8 holes Cutout diameter 14" / 356 mm Depth 4-31/32" 126 mm 8 Ohms 2000 W peak 1000 W program 500 W continuous per AES 2-1984, 50 Hz - 500 Hz 97. 2 dB 1 Watt / 1 meter 35 Hz ~ 2 kHz Kevlar impregnated cellulose 4. 0" / 100 mm Copper ribbon wire Polyimideimpregnated fiberglass former Nomex stiffener Solderless diffusion welded OFHC copper leads 17 lbs. / 7. 7 kg 1508-8he 00457680 15" / 380 mm nominal Frame OD 151/4" / 387 mm Bolt circle 14-9/16" 370 mm, 8 holes Cutout diameter 14" / 356 mm Depth 4-31/32" 126 mm 8 Ohms 2000 W peak 1000 W program 500 W continuous per AES 2-1984, 50 Hz - 500 Hz 100. 3 dB 1 Watt / 1 meter 40 Hz ~ 2 kHz Kevlar impregnated cellulose 4. 0" / 100 mm Aluminum ribbon wire Polyimideimpregnated fiberglass former Nomex stiffener Solderless diffusion welded OFHC copper leads 17 lbs. / 7. 7 kg 1208-8sps 00452830 12" / 305 mm nominal Frame OD 121/4" / 311 mm Bolt circle 11- 5/8" 295 mm, 8 holes 1208-4sps 00452840 12" / 305 mm nominal Frame OD 121/4" / 311 mm Bolt circle 11- 5/8" 295 mm, 8 holes SUGGESTED ENCLOSURES For those who want to build their own enclosures, but don't want to go through the design process using driver parameters, we provide the following optimized designs: FOR 1508-4/8sps: Sealed enclosure May be preferred for stage monitors to control boominess and low frequency feedback on stage. Small vented enclosure Excellent performance for compact, general purpose use. Medium vented enclosure Terrific compromise of bass performance and enclosure size. Large vented enclosure Big box, big bass!Great response as a subwoofer or the bottom end of a large multi-way enclosure design. Single reflex bandpass enclosure Special enclosure design that uses the enclosure as an acoustic filter for shaped response. Great choice for a compact subwoofer system. FOR 1508-8cu: Small vented enclosure An incredibly small enclosure with outstanding bass performance for its size. Medium vented enclosure Small box with powerful bass and predictable, flat response down to an F3 of 45 Hz. Large vented enclosure Strong, flat response with bass extension to an F3 of 41 Hz. [. . . ] Look at commercially designed enclosures for ideas on good brace placement. Use wood screws or a pneumatic nailer to assemble the enclosure during gluing, to maximize joint strength. Strength of the completed enclosure has a great effect on the bass performance of the finished system. Box panels that aren't stiff enough will vibrate ­ cancelling bass produced by the woofer, and creating undesired sounds of their own. [. . . ]