lecho ore" ENGINEERING a ba o: A EA PEA o uo a Ms Е ВЕ очи asi Fre Pa ой ro toi a OT Ae a ET eee pee ee me EE теоеЛо 4 A ME Ira DESCRIPTION Representing an entirely new approach to loudspeaker system design, the E-V FIVE-C provides performance formerly found only in far more expensive systems. The ten-inch woofer, two and one-half-inch tweeter and RLC crossover created for the E-V FIVE C have been tested as individual components and then as.an integral part of the completed system, assuring performance equal to the laboratory standard. An acoustic-suspension woofer requires more moving mass than a conventional speaker for good low-frequency response. The required mass is supplied in the E-V FIVE-C wooter by adding two additional layers of wire to the voice coil. More turns of wire in the magnetic gap maintain efficiency and offset the increased mass. The result is bass response superior to woofers far more costly and complex. lransient response, even near the resonant frequency, remains clean and precise. The bass viol and kettle drum retain their natural quality —here there is no “juke box” bass. Brilliant high-frequency response is assured by a new tweeter incorporating several design innovations. While basically a cone tweeter, it has a specially selected dust dome mounted centrally on the cone. In the lower portion of its frequency range, the tweeter cone and dome together function with full efficiency. As fre- quency increases, a progressively smaller area of the cone radiates sound. At the highest frequencies, only the dome is radiating. Thus maximum dispersion is maintained at all frequencies without sacrificing efficiency. Resonant frequency of the tweeter is just below the crossover point, ensuring rapid rolloff, In addition, viscous damping compound is applied to the cone compliance roll. This semi-liquid material controls cone movement at reso- nance and eliminates spurious responses and breakup. E-V FIVE:C COMPACT RESPONSE IN Da —=| Баь |= Ad 53 Figure 1—Representative frequency response and range of balance control action, à © 8980088 à 88868800 Ad 3 FREQUENCY IN CYCLES PER SECOND In OL The E-V FIVE-C enclosure integrates the requirements for acoustical excellence with the techniques of fine furniture construction. All four sides are finished in genuine oiled walnut veneer to allow use in either vertical or horizontal position. The nameplate may be rotated for vertical placement. SPECIFICATIONS Frequency Response: 30 to 20,000 Hz Nominal Impedance: 6 ohms Power Handling Capacity Program: 30 watts Peak: ; 60 watts Dimensions: 124” Hx 21%” W x 10-3/8” D Finish: Oiled Walnut Veneer Shipping Weight: 31 pounds PLACEMENT The E-V FIVE-C may be placed on a table, shelf, or on the floor. Generally however, the most realism will be obtained if its height from the floor is near the listener’s ear level. The E-V FIVE-C performs equally well placed in a horizontal or vertical position. The nameplate may be rotated to accommodate either placement. The above comments apply also to stereophonic place- ment. Additionally, however, the two systems should be far enough apart to permit listeners to sit at the apex of a thirty- to forty-degree angle, as illustrated. A distance of six to eight feet between stereo speakers will, in most rooms, provide natural separation. Placing the loud- . Speakers too close together or listening at too great a distance will destroy the stereo effect, and the sound heard will be essentially monophonic. Extreme spacing between speakers or listening at too short a distance will produce exaggerated and unreal separation. In long e < 2 < m O © O 3 В Q =| r O = О 0 U m Lr A m À © < 0 =! m < Part No. 534824 rooms, the loudspeakers should be placed along one of the short walls facing into the long room dimension. This improves bass reproduction and provides good stereo listening over most of the room. ' AMPLIFIER CONNECTIONS The E-V FIVE-C has a nominal impedance of eight ohms. Connections should be made between the left terminal (T1) and the amplifier 8-ohm terminal; the right terminal (T2) should be connected to the amplifier “common” terminal (sometimes referred to as “O” or “C”). Con- nections should be made with No. 18 or larger wire; common zip- or lamp-cord is satisfactory. If the speaker leads are to be run behind a molding strip or under a carpet, TV twin lead may be used. ADJUSTMENT OF BALANCE CONTROL The E-V FIVE-:C is equipped with a continuously- variable balance control to adjust the high-frequency response of the system to varying acoustical environ- ments. The “normal” position, indicated on the control, should be correct in most instances. Acoustically “hard” or “live” rooms may require a retarded setting of the control to compensate for the greater amount of high- frequency reflection. In “soft” or “dead” rooms with carpeting, soft furniture, and draperies, an advanced setting of the control will normally be required. The best guide to setting the control properly is a familiarity with the sound of live music. That position of the control which provides the musical balance most pleasing to you is correct, GUARANTEE Your Electro-Voice speaker system is guaranteed for five years from date of purchase against failures due to defects in material or workmanship. Within this period, Electro-Voice will repair or replace (at our option) any defective system delivered to us or our service agency. The unit will be returned prepaid and without charge for material or labor. Excluded from this guarantee are finishes and failures caused by shipping damage or physical abuse. Operation under conditions other than those encountered in typical installations, operation in excess of specified ratings, or repair by other than Electro-Voice or its authorized service agencies will void this guarantee. Should difficulty occur, contact the Electro-Voice Service Manager for instructions. €) “HOLE IN THE MIDDLE” EEE mi Aa Mare 90° BEST LISTENING POSITION SOUND BECOMES MONAURAL AT GREATER DISTANCES Figure 2—Placement for stereo CUSTOMER SERVICE Your E-V FIVE-C system has been packed to provide protection well in excess of shipping requirements of the Interstate Commerce Commission. If shipping damage occurs, contact the dealer from whom the unit was purchased or the carrier and request inspection and further instructions, ELECTRO-VOICE, INC. / Buchanan, Michigan A Subsidiary of Gulton Industries, Inc. 912 Litho in U.S.A.
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