User manual ELECTRO-VOICE MM2TC EDS

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Manual abstract: user guide ELECTRO-VOICE MM2TC EDS

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[. . . ] SPECIFICATIONS Frequency Response: 800-5, 000 HZ f 5 dB (see Figure 3) Power Handling, 8 Hours, 6-dB Crest Factor: 25 watts (500-5, 000 Hz pink noise) Impedance: 16 ohms Sound Pressure Level at 1 Meter, 1 Watt Input Average, Pink Noise Band-Limited from 800-5, 000 Hz: 104 dB Horizontal Beamwidth: 82O @ 2 kHz (see Figure 2) Vertical Beamwidth: 82O @ 2 kHz (see Figure 2) Directivity Factor R, 10. 25 @ 2 kHz (a): Usable Low-Frequency Limit: 600 Hz Construction: Rugged die-cast aluminum case and transformer housing. All metal speaker parts are of anodized aluminum with baked-on acrylic paint. [. . . ] Dimensions shall be 25. 4 cm (10. 0 in. ) high, by 16. 4 cm (6. 4 in. ) wide, by 11. 3 cm (4. 4 in. ) deep. The loudspeaker shall be the University Sound MM2TC. FREQUENCY RESPONSE Figure 3 shows the axial frequency response of the MM2TC. INSTALLATION Mounting of the MM2TC is by way of two 13/32'' holes spaced 5. 688" on centers. pipe or rigid conduit is provided in the bottom side of its cork-neoprene gasketed transformer housing. LOW-FREQUENCY DRIVER PROTECTION When frequencies below the low-frequency cutoff for the horn assembly are fed to the driver, excessive current may be drawn the by driver. For protection of driver, amplifier, and transformer (if driver with built-in transformer is used), capacitor(s) in series with driver, or transformer primary are recommended. For drivers without transformers: 16-0hm driver, 25 V - 50 mf 150 V dc or 150 V non-polarized electrolytic, or two 150 V dc electrolytics of two times required value in series, back to back, for 70-volt lines. WARRANTY (Limited) - University Sound Speakers and Speaker Systems (excluding active electronics) are guaranteed for five years from date of original purchase against malfunction due to defects in workmanship and materials. If such malfunction occurs, unit will be repaired or replaced (at our option) without charge for materials or labor if delivered prepaid to University Sound. Warranty does not extend to finish, appearance items, burned coils, or malfunction due to abuse or operation under other than specified conditions, including cone andlor coil damage resulting from improperly designed enclosures, nor does it extend to incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Service and repair information for this product: University Sound, Inc. , Phone 818l362-9516. [. . . ] The better sound systemsare designed for peaks that are 10 dB above the average, although 6 dB of headroom is sufficient for most general-purpose voice paging systems The 10-dB peaks require amplifier power ten times that requiredfor theaveragesound levels The 6-dB peaks requirefourtimesthe power. Utilizing Speaker Beamwidth Information for Maximum Intelligibility Knowingthe beamwidthangle of a loudspeaker can aid in providinga unlorm direct field in the listeningarea After selecting a desired speaker location, the beamwidth angle needed to adequately cover the listeners without spilling over to the walls or ceilings must be determined Once these angles are known the correct speaker can be found by using catalog specifications Using Easy-VAMPTM and Floor-Plan Isobars In some circumstances d is desirableto use an approachthat is more detailed than using the basic horizontaland vertical beamwidth angles Environments which have excessive reverberation or high ambient noise levels make it especially difficult to achieve the desired SPL and intelligibility In recent years a number of computer based techniques have been developed to help sound system designers Some of the more complex systems use personal computers with relatively sophisticated graphics Simpler systems, such as Electro Voice s VAMPTM (Very Accurate Mapping Program) utilize clear overlays and require programmable scientific calculators However, the hardwareisoftwareand training investment required to utilizeeven thesimpler systems are not attractivetosomesound systems designers Because of this University Sound has developed a special adaptation of VAMP, called Easy VAMPTM which providesa similar design aid without the complexity and cost of the VAMP programs More information on both the Easy VAMPTM and floor plan isobars can be found in the University Sound Guide Part Number 531291-923 US 42-02-0261 17 Litho in U. S. A [. . . ]

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