User manual PEAVEY LOW RIDER 18 ASSEMBLY

[. . . ] It is capable of extremely high output below 40 Hz for excellent performance. Large vented box The large vented box produces superb performance in the bottom octave for high level playback, movie theater, special effects and permanent installation. The enclosure reduces power handling by about 15% but offers useful output to 25 Hz. Single-reflex bandpass Special enclosure design that uses the enclosure as an acoustic filter for shaped response. [. . . ] The extremely high power handling and available 1. 4" of cone travel combine for astonishing low frequency output, while the possibility of small enclosures adds a new dimension in compact, high output sound reinforcement systems. 4. STEP 3 STEP 4 ONE YEAR LIMITED WARRANTY NOTE: For details, refer to the warranty statement. Copies of this statement may be obtained by contacting Peavey Electronics Corporation, P. O. Box 2989, Meridian, MS 39335 Kapton® is a registered trademark of DuPont. Kevlar is a registered trademark of DuPont. ® Features and specifications subject to change without notice. Peavey Electronics Corporation · 711 A Street · Meridian · MS · 39301 (601) 483-5365 · FAX (601) 486-1278 · www. peavey. com ©2001 Printed in the U. S. A. 6/01 Nomex® is a registered trademark of DuPont. Rubatex® is a registered trademark of Rubatex Corporation. 80304779 APPLICATIONS The Low Rider 18 is specifically designed for subwoofer use, with extremely high output capabilities and massive power handling. It is usable to 500 Hz, although most subwoofer applications will be below 150 Hz. Best performance for this driver will be with vented enclosures between 5 and 9 cubic feet (142 to 255 liters), and vent tunings from 30 to 45 Hz. The Low Rider 18 is optimized for vented systems but will also work with appropriate singlereflex bandpass enclosures. Sealed, infinite baffle, transmission line, and dual reflex bandpass enclosures are not recommended. When the Low Rider 18 is driven with a power amplifier greater than 750 Watts, active filtering must be included. This filter should be a high pass 24 dB Butterworth at a minimum of 25 Hz. Failure to use filtering with high power operation may cause driver damage that could void your warranty. The extremely high output capabilities of the Low Rider 18 introduce the possibility of causing structural damage to buildings, as well as inducing permanent hearing loss, nausea, vertigo and intestinal disturbances in listeners. Please take care in setting maximum sound pressure levels. design strength of the cabinet. The Low Rider 18 can generate enormous forces inside the enclosure, and panels that aren't stiff enough will vibrate - creating undesired sounds of their own. If your cabinet vibrates or the cabinet panels are not stiff enough, add more bracing. [. . . ] 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 . Pmax: Maximum continuous program power in Watts. Disp: Volume displaced by the driver inside the cabinet when mounted on its rear flange. SPECIFICATIONS Part # Size: inches / mm Frame OD inches / mm Bolt circle inches / mm Cutout diameter inches/mm Depth Impedance: Power Capacity: 1808-8HPS Low Rider 18 00479910 18" / 460 nominal 18-1/8" / 460 17-3/8" / 441 16-3/4" / 425 6-3/8" / 162 8 Ohms 3200 W peak 1600 W program 800 W continuous per AES 2-1984, 50 Hz ­ 500 Hz Low Rider 18: Small vented 5. 0cf Fb37 Low Rider 18: Medium vented 6. 75cf Fb34 Low Rider 18: Large vented 9. 0cf Fb30 Low Rider 18: Single reflex bandpass 7. 5cf 100 PARAMETERS Thiele-Small parameters for Low Rider 18" subwoofer follow. This data is for use in designing enclosures. [. . . ]