User manual ELECTRO-VOICE 30W BUILD PLANS

[. . . ] Furthermore, excellent loading is maintained to a low frequency of 1000 Hz. The flat-front design makes the 30W suitable for all modern boxed and clustered systems. [. . . ] The flat-front design makes the 30W suitable for all modern boxed and clustered systems. A special vaned waveguide throat detail gives the 30W unusually good high-frequency control, vertically, when compared to similar 2-inch-throat horn designs. TransPlanarTM Constant-Directivity Horn Architects' and Engineers' Specifications The horn shall be of the constant-directivity type. It shall produce a horizontal beamwidth (6 dB-down angle) of 60 degrees, deviating no more that 30 degrees from this angle over the frequency range 2, 000 to 20, 000 Hz. It shall produce a vertical beamwidth of 40 degrees, deviating no more than 20 degrees from this angle over the frequency range 1, 600 to 20, 000 Hz. In addition, it shall provide useful acoustic loading at all frequencies above 1000 Hz. The horizontal beamwidth is maintained at 60° (+30°, -10°) over the range of 1. 7 kHz to 20 kHz. Vertical beamwidth is maintained at 40° (+20°, -10°) over the range 1. 8 kHz to 20 kHz. Figure 2: Directivity vesus Frequency Figure 3: 6-dB-Down Beamwidth versus Frequency USA Canada Germany France Australia Hong Kong Japan Singapore Mexico UK Africa, Mid-East Latin America www. electrovoice. com Telex Communications, Inc. 02/2001 Part Number 38109-954 Rev A 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043 705 Progress Avenue, Unit 46, Scarborough, Ontario, Canada, M1H2X1, Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588 Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 0, FAX: 49 9421-706 287 Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538 Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N. S. W. 2128, Australia, Phone: 61/2-9648-3455, FAX: 61/2-9648-5585 Unit E & F, 21/F, Luk Hop Industrial Bldg. , 8 Luk Hop St. , San PO Kong, Kowloon, Hong Kong, Phone: 852-2351-3628, FAX: 852-2351-3329 5-3-8 Funabashi, Setagaya-ku, Tokyo, 156-0055 Japan, Phone: +81 (0) 3-5316-5020, FAX: +81 (0) 3-5316-5031 3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206 Av. 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212 U. S. A. [. . . ] 02/2001 Part Number 38109-954 Rev A 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043 705 Progress Avenue, Unit 46, Scarborough, Ontario, Canada, M1H2X1, Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588 Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 0, FAX: 49 9421-706 287 Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538 Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N. S. W. 2128, Australia, Phone: 61/2-9648-3455, FAX: 61/2-9648-5585 Unit E & F, 21/F, Luk Hop Industrial Bldg. , 8 Luk Hop St. , San PO Kong, Kowloon, Hong Kong, Phone: 852-2351-3628, FAX: 852-2351-3329 5-3-8 Funabashi, Setagaya-ku, Tokyo, 156-0055 Japan, Phone: +81 (0) 3-5316-5020, FAX: +81 (0) 3-5316-5031 3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206 Av. [. . . ]