Eleclio Yoree ENGINEERING DESCRIPTION Given the task of creating a moderately-priced loud- speaker system which, despite space restrictions frequently imposed by modern decor, would repro- duce sound faithfully over abroad frequency range, Electro-Voice engineers designed the E-V ONE. These seemingly-disparate objectives were ac- complished by employing two drivers, each designed to function in a particular portion of the sound spectrum, matched toa carefully-designed acoustic enclosure of three-fourths-inch hardwood veneer. Sounds in the lower range--those below 850 cps-- are effectively reproduced by a component-quality ten-inch woofer, design refinements of which in- clude a ceramic magnet, precision-wound voice coil, and a linear suspension permitting long--but care- fully controlled--excursions. Sounds in the upper frequencies are reproduced by a five-inch dynamic cone driver of sophisticated design which utilizes silvered aluminum voice coil wire to obtain unusually high conductivity with pro- portionately low mass. A polyurethane suspension provides optimum compliance and damping. A two-way electrical crossover provides smooth transition from one driver unit fo the other, Finest quality components and etched circuit board con- struction are employed for maximum power handling capacity and crossover-frequency accuracy. — The ultra-slim totally-sealed enclosure of the E-V ONE is rigidly constructed from five-ply stock throughout and carefully hand finished on four sides in oiled walnut. The nameplate rotates to permit either horizontal or vertical placement. FEATURES E-V ONE SLIMLINE BENE | OUDSPEAKER SYSTEM e Two separate component quality drivers for wide range, low distortion e High efficiency for use with any amplifier e Fine furniture cabinetry finished on four sides SPECIFICATIONS FREQUENCY RESPONSE: 50 to 15, 000 cps VLVO ONIN33NI9N3 NOMINAL IMPEDANCE: 8 ohms POWER HANDLING CAPACITY PROGRAM: 25 watts PEAK: 50 watts DIMENSIONS: 24-3/8 in. h X 16-3/5 in. w X 5- 5/8 in. d FINISH: Oiled walnut NET WEIGHT: 20 pounds SHIPPING WEIGHT: 22 pounds == БЫ!Ь === = A FREQUENCY IN CYCLES PER SECOND Figure 1 - Representative frequency response and balance control action. PLACEMENT The E-V ONE may be placed on a shelf or table, or on the floor. Generally, however, maximum realism will be obtained if its height from the floor approximates the listener's ear level. A room corner, if available, assures maximum efficiency and bass reproduction, since the room walls act as the sides of a large horn. The E-V ONE per- forms equally well horizontally or vertically, and the nameplate may be rotated to accommodate either placement. PLACEMENT FOR STEREO The same comments apply to stereophonic place- ment. Im addition, the two systems should be far enough apart to permit listeners to sit at the apex of a 30° to 40° angle, as illustrated. A distance of six to eight feet between stereo speakers will, in mostrooms, provide natural separation, Placing loudspeakers too close togetheror listening at too greata distance will destroy the stereo effect, since essentially monophonic sound will be heard by the listener. Extreme spacing between speakers or listening at too shorta distance will produce exag- gerated and unreal separation. In long 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. "HOLE IN THE MIDDLE" 90° BEST LISTENING POSITION SOUND BECOMES MONAURAL AT GREATER DISTANCES Figure 2 - Placement for stereo AMPLIFIER CONNECTIONS The E-V ONE system has a nominal impedance of eight ohms. Connections, therefore, should be made between the left terminal (T1) and the ampli- fier eight-ohm terminal; the right terminal (T2) should be connected to the amplifier COMMON ter- minal (sometimes referred to as "O" or "C"). Connections should be made with No. 18 or larger wire; common zip or lamp cord is quite satis- factory. If the speaker leads are to run behind a molding strip or under a carpet 300-ohm TV twin lead should be used. BALANCE CONTROL The E-V ONE is equipped with an acoustical balance control which is used to accommodate the high-frequency response of the system to varying acoustical environments. A "normal" position is indicated on the control which 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, draperies and soft furniture, an advanced setting of the control will normally be required. The best guide to setting the control properly is, of course, a familiarity with the sound of live music. That position of the control which provides the musical balance most satisfactory to you is correct. CUSTOMER SERVICE The E-V ONE system is packed to provide pro- tection well in excess of shipping requirements-of the Interstate Commerce Commission. If shipping damage does occur, contact the carrier, requesting inspection and instructions, or the dealer from whom the unit was purchased. The E-V ONE is guaranteed indefinitely against defects inoriginal workmanship and materials. Should your system become damaged or develop faulty operation from unusual conditions of use, write to the Electro- Voice Service Department requesting return authorization and shipping instructions. Be sure to mention the make and model number of other com- ponents used in the system. Part No. 531166 Ey) ELECTRO-VOICE, INC. 7 Buchanan, Michigan Litho in U.S.A.
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