Electro-Voice Eliminator ii Power-HandlingCapacity, Amplifier Recommendations, Frequency Response

Power-Handling Capacity

To our knowledge, Electro-Voice was the first U.S. manufacturer to develop and publish a power test closely related to real-life conditions. First, we use

arandom-noise input signal because it contains many frequencies simultaneously, just like real voice or instrument program. Second, our signal contains more energy at extremely high and low frequencies than typical actual program, adding an extra measure of reliability. Third, the test signal includes not only the overall “long term average” or “continuous” level – which our ears interpret as loudness – but also short-duration peaks which are many times higher than the average, just like actual program. The long- term average level stresses the speaker thermally (heat).The instantaneous peaks test mechanical reliability (cone and diaphragm excursion). Note that the sine-wave test signals sometimes used have a much less demanding peak value relative to their average level. In actual use, long- term average levels exist from several seconds on up, but we apply the long-term average for several hours, adding another extra measure of reliability.

Specifically, the Eliminator ii™ is designed to withstand the power test described in the ANSI/EIA RS-426-A 1980.The EIA test spectrum is applied for eight hours.To obtain the spectrum, the output of a white-noise generator (white noise is a particular type of random noise with equal energy per bandwidth in Hz) is fed to a shaping filter with 6-dB-per-octave slopes below 40 Hz and above 318 Hz. When measured with the usual constant- percentage bandwidth analyzer (one-third-octave), this shaping filter produces a spectrum whose 3-dB-down points are at 100 Hz and 1,200 Hz with a 3-dB-per-octave slope above 1,200 Hz.

Amplifier Recommendations

The power-handling rating of the Eliminator ii™ is 600-watts continuous. The specific tests used employ a crest factor (ratio of peak energy to continuous energy) of at least 6 dB. During extended testing, the Eliminator ii™ is routinely subjected to peak levels far in excess of its continuous rating of 600 watts. Many amplifier designs are capable of producing peak power levels in excess of their ratings as well, so exact “pairing” of loudspeaker rating and amplifier ratings is not necessary. Amplifier continuous ratings of 300 watts to 600 watts into 4 ohms are suggested.

Figure 1. Frequency Response

Figure 3. Dimension Drawing

Figure 2. Impedance

USA	12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, Fax: 952-884-0043
Canada	705 Progress Avenue, Unit 46, Scarborough, Ontario, Canada, M1H2X1, Phone: 416-431-4975, 800-881-1685, Fax: 416-431-4588
Germany	Hirschberger Ring 45, D94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 287
France	Parc de Courcerin, Allee Lech Walesa, Lognes, 77185 Marne la Vallee, France, Phone: +33 1 6480-0090, Fax: +33 1 6480-4538
Australia	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
Hong Kong	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
Japan	5-3-8 Funabashi, Setagaya-ku, Tokyo, 156-0055 Japan, Phone: +81 3-5316-5020, Fax: +81 3-5316-5031
Singapore	3015A Ubi Rd 1,05-10, Kampong Ubi Industrial Estate, Singapore 408705,Phone: +65-746-8760, Fax: +65-746-1206
Mexico	Av. Parque Chapultepec #66-201, Col. EI Parque Edo. De Mexico 53390, Mexico, Phone: +52 5358-5434, Fax: +52 5358-5588
UK	4, The Willows Centre, Willow Lane, Mitcham,Surrey CR4 4NX, UK, Phone: +44 181 640 9600, Fax: +44 181 646 7084
Africa,Mid-East	Hirschberger Ring 45, D94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: 49 9421-706 287
Latin America	12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, Fax: 952-887-9212

www.electrovoice.com • Telex Communications, Inc. • www.telex.com

© Telex Communications, Inc. 06/2001

U.S.A. and Canada only. For customer orders, contact the Customer Service department at 800/392-3497 Fax: 800/955-6831 For warranty repair or service information, contact the Service Repair department at 800/685-2606

For technical assistance, contact Technical Support at 866/78AUDIO

Please refer to the Engineering Data Sheet for warranty information.

Specifications subject to change without notice.

Part Number 38109-991 Rev A