Electro-Voice S-1202ER User's Manual
Contents
1. 3M 3AIS3HQV 1713 4 LOH 91 16 3 M43AOSSOHO 138V1 on dais 682 02 VOSOAGY W3HOAVH HOLIMSA Od 80296 12 6 082 22 271 v IONIS31 WYO 3dV 1 WY 97 62 60 WIL 2002 92 12 92. access to the drivers by firmly pulling on the two black polyester ribbon loops provided WARRANTY Limited Electro Voice 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 malfunc lion occurs unit will be repaired or replaced at our option without charge for materials or labor if delivered prepaid to the proper Electro Voice service facility Unit will be returned prepaid Warranty does not extend to finish appearance items burned coils or Malfunction due to abuse or operation under other than specified conditions including cone and or 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 Repair by other than Electro Voice or its authorized service agencies will void this guarantee A list of authorized warranty service agencies is available from Electro Voice Inc 600 Cecil Street Buchanan MI 49107 AC 616 695 6831 and or Electro Voice West 8234 Doe Avenue Visalia CA 93291 AC 209 651 7777 This warranty gives you specific legal rights and you may also have other rights which vary from state to state Service and repair address for this product Electro Voice Inc 600 Ce
3. SPECIFICATIONS Frequency Response 10 Feet on Axis Swept Vs Octave Hall Space Anechoic Environment see Figure 1 75 20 000 Hz Low Frequency 3 d8 Down Point 75 Hz Usable Low Frequency Limit 10 dB down point 60 Hz Half Space Reference Efficiency 5 9 Long Term Average Power Handling Capacity per EIA Standard RS 426A see Power Handling Capacity section 300 watts Maximum Woofer Acoustic Output 17 7 watts Sound Pressure Level at 1 Meter 1 Watt Input Anechoic Environment Band Limited Pink Noise Signal 300 to 2 000 Hz 101 5 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Indicated One Third Octave Bands of Pink Noise 250 20 000 Hz Horizontal see Figure 3 1109 2609 5 000 20 000 Hz Vertical see Figure 3 49 79 Directivity Factor Rg 800 16 000 Hz Median see Figure 4 11 6 5 5 8 Directivity Index D 800 16 000 Hz Median see Figure 4 105 dB 41 5 dB 5 dB Distortion 0 1 Full Power Input Second Harmonic 10 000 Hz 4 59 Third Harmonic Distortion 0 01 Full Power Input Second Harmonic 100 Hz 1 5 1 000 Hz 0 596 10 000 Hz Third Harmonic 100 Hz 196 1 000 Hz 1 396 10 000 Hz 196 Transducer Complement High Frequency DH2010A driver HT94 horr Low Frequency EVM 128 Pro Line Box Tuning Frequency 70 Hz Crossover Frequency 1 600 Hz Crossover Slope 12 dB per octave Impedance Nominal 8 ohms Minimum 7 chms Input Connection Parallel 4 in ph
4. cil Street Buchanan Michigan 49107 Specifications subject to change without notice HORIZONTAL 4 280 Ma 2 000 Hz FIGURE 2 Polar Response octave pink noise 4 volts 10 feet dej eb lil L LLL 299 TER FREQUENCY IN HERTZ FIGURE 3 Beamwidth vs Frequency Whole Space anechoic NUMBERS INDICATE SPECIFIC Ry VALUES DIRECTIVITY FACTOR Rg Q DIRECTIVITY INDEX D dB FREQUENCY IN HERTZ FIGURE 4 Directivity vs Frequency Whole Space anechoic 1VO L0 aL ALON 335 a CRR IBO i en Q S O Y V SRM m RA 2 p ree Y 44 67 60 WIL 002 92 9184 1 10 OYL MJI33Ml 019 170 M3133Ml 010 MOTA xn LO x M33OOM 010 ONI M9718 GAN 8 3200 010 ONI WY 62 60 002 92 2 9194 VOLO SrgrgwerwuueKepysuoyeuouyo en L 1016 HOM KYNVHONG 16 B 92 BINGO LENOBA ONI 39lO0A OH1903 13 NOI LdlHOS3Q 311 318 9 LOG N33H9 HWEL YOLINANI LOG 39NVHO HWGEe YOLONGNI 2116 14 1340906 Wu3NIVIJU V S MOV 3NOHd MOVIE V S 144244 SHIM MOTI3A V S 143238 9 3UIM Movl8 V S 14302384 SYIM Qq3u v S 143034
5. g swept octave No external equalization was used DIRECTIVITY A unique feature of the S 1202ER is the constant directivity dispersion provided by the 90 x 40 horn The polar response of the system at selected Ys octave bandwidths is shown in Figure 2 These polar responses were measured in an anechoic environment at 10 feet using Vs octave pink noise inputs The frequencies selected are iully represen tative of the polar response of the system Beamwidth of the system utilizing the complete 3 octave polar data is shown in Figure 3 Rg and directivity index Dj are plotted in Figure 4 POWER HANDLING CAPACITY To our knowledge Electro Voice was the first U S manufacturer to develop and publish a power lest closely related to real life conditions First we use a random 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 reliapility 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 tha
6. ient performance to below 75 Hz The 12 inch woofer is an EVM 12S Pro Line unit featuring beryllium copper lead wires a low mass edgewound voice and high temperature materials The part of the magnetic structure adjacent to the coil is insulated using the ex clusive EV PROTEF process U S Patent 4 547 632 The coil is driven by a massive 16 Ib magnetic structure CONSTANT DIRECTIVITY SPEAKER SYSTEM The crossover frequency and speaker component geometries have been selected so that the directional characteristics of the woofer and constant directivity horn match at the crossover frequency approximately 90 circular coverage patterns for each to create special system type the constant directivity system At higher frequencies the horizontal coverage pattern remains constant and the vertical pattern smoothly transitions to 40 to 509 angle above 5 000 Hz Response within the 90 x 40 rated coverage angle is uniform which means dependable audience coverage without hot spots or dead zones at certain frequencies The 90 x 40 dispersion characteristic also helps avoid early reflections from nearby floor or side wall surfaces which could degrade performance The controlled direc tivity of the high and low frequency transducers also eliminates response irregularities caused by diffraction off nearby enclosure edges and in combination with an essentially flat on axis frequency response Produces a total ac
7. one jacks paralleling of multiple spea Enclosure Materials and Colors carpet covered Road Dimensions 648 g E 5 19 5 in wide 5 cm 12 0 in deep Net 66 10 ing Weight g 72 16 Elecio toice MARK company FIGURE 1 Axial Frequency Response 4 volts 10 teet Model 8 1202ER Stage Speaker System DESCRIPTION The compact 300 watt two way high el cron jvity stage system oan diam stands is provi onents arranged in array with an unusually aligned vented eni and articulate high tructed of al material madi The enclosui layered and strands stro phenolic resi U S Patent densely woven ai carpeting The high frequency sectio utili a 90 x 40 constant driven a one inch t wide bandwidth diaphragm driver This drive onvex dri 7 mance The voic diaphragm with EV Drive technology equalization required for flat frequency response sell resetting high frequency circuit has been prevent agai improve syster to the high frequency driver exceeds the nominal rating the protection circuit is activated and reduces the power delivered to the driver by 6 dB The system will remain in this mode of operation until the input power is reduced to a sale level The bass section of the S 1202ER is design ed using Thiele Small parameters for effic
8. oustic power output that is uniform with frequency ENCLOSURE CONSTRUCTION The S 1202ER enclosure utilizes a structural material that combines the strength of high Quality piywcod with the density and acoustic damping of particle board without brittleness Road Wood uses the same principle of crossbanding veneers as in plywood order to achieve its very high rigidity A tough liquid phenolic resin is blended with long narrow strands of hardwood Alternate layers are perpendicularly bonded under intense heal and pressure to form panels of superior uniformity Unlike many grades of plywood Road Wood is dimensionally stable walter resistant and free from voids A combination of dado cut joints tough adhesives and proper bracing ensure a sonically dead enclosure free form panel resonances The densely woven industrial grade abuse resistant carpeting provides a finish that is both attractive and highly durable Large heavy duty metal corner protectors firmly secured rubber feet and recessed handles complete the picture and ensure that the S 1202ER speaker system is ideally suited lo long and reliable life the road FREQUENCY RESPONSE The combination of a 12 inch woofer wide bandwidth high frequency driver and an equalized crossover results in the wide and smooth overall response shown in Figure 1 This response was measured at 10 feet using a 4 volt input in an anechoic chamber and was measured usin
9. t the sine wave test signals sometimes used have a much less demanding peak value relative to tneir 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 S 1202ER is designed to withstand the power test described in the revised EIA Standard RS 426A 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 1200 Hz with a 3 dB per octave slope above 1200 Hz This shaped signal is sent to the power amplifier with the continuous power set at 300 watts into the 6 4 ohms EIA equivalent impedance 43 8 volts true RMS Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 1200 watts peak 87 6 volts peak This procedure provides rigorous test of both thermal and mechanical failure modes GRILLE REMOVAL The grille assembly of the S 1202ER is fastened to the enclosure using four sturdy dual lock fasteners The grille assembly can be removed quickly and easily allowing
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