Electro-Voice ECS 15-1 User's Manual
Contents
1. rere re Oe ees Seder auier tate tied love ee nt Se shaping filter produces a spectrum whose 20 50 100 200 500 1 kHz 2 5 10 3 dB down points are at 100 Hz and 1 200 Hz FIGURE 1 Axial Frequency Response The densely woven industrial grade abuse resistant carpeting provides a finish that is both attractive and highly durable A solidly constructed one piece removable metal grill protects the front of the system Firmly secured rubber feet and recessed handles complete the picture and ensure that the ECS 15 1 speaker system is ideally suited to a long and reliable life on the road FREQUENCY RESPONSE The ECS 15 1 frequency response was meas ured at ten feet using a four volt input in an anechoic chamber and was measured using a swept 3 octave pink noise signal No external equalization was used Note than when the ECS 15 1 is used in a half space environment ie on the floor the output at the low end is raised by 3dB as an effective mirror image of the speaker is created CONNECTIONS The ECS15 1 is equipped with Neutrik Speakon NL4MPR connectors Two con nectors are installed in parallel allowing additional ECS15 1 s to be installed One mating Speakon connector NL4FC is sup plied with each system These connectors are locking self polarizing and capable of 30 amps rms continuously Additional connectors and cables can be purchased from your dealer GRILLE REMOVAL The grille assembly of the ECS 15 1 is2. a am ee Soe S r R Ca oF _ a gt eee Cs gt T gt e Oe gS Se ae ize x Flectro Yo ES ES P tirn EY HAST a JES i IC cue sa a a eS AT MEEA ee TN gt eae Sak ee Saige t a SPECIFICATIONS Frequency Response 10 Feet Te LL r vy ze i pee on Axis Anechoic Environment 3 dB 54 3 200 Hz Low Frequency 3 dB Point 54 Hz Usable Low Frequency Limit 10 dB Point 40 Hz Half Space Reference Efficiency 6 2 Long Term Average Power Handling Capacity 400 Watts Maximum Woofer Acoustic Output 25 Watts Sound Pressure Level at 1 meter 1 Watt Input Anechoic Environment 100 dB Dispersion Angle nominal Horizontal and Vertical 50 200 Hz Essentially Omnidirectional Transducer Complement DL15X Recommended Crossover Frequency 125 150 Hz Impedance Nominal 8 Ohms Minimum 6 6 Ohms Input Connections Two Parallel Speakon Connectors Material Enclosure Black carpet covered Road Wood Grill Black metal grill removable Optional Accessories Mounting Pole ECS P Dimensions 70 0 cm 27 6 in high 47 0cm 18 5in wide 45 0cm 17 7 in deep Net Weight 30 0 kg Shipping Weight 33 0 kg DESCRIPTION The ECS 15 1 is a400 Watt sub woofer speaker system designed to supplement ECS Series of speaker systems Designed according to the analysis of Theile Small this system is characterized by high efficiency low distortion and an excellent low frequency performance in a relatively small
3. enclosure size Especially designed to match the other loud speaker systems in the ECS series both in width as well as cosmetics the ECS 15 1 is the ideal low frequency extension to the ECS 12 2 and other systems With the optional ECS P mounting pole fitted to the top of the cabinet systems such as the ECS 12 2 can be mounted at an ideal height without the use of a separate speaker stand USE IN MULTIPLES The ECS15 1 may be used in multiples to increase acoustic output A 6 dB increase in maximum acoustic output occurs when two ECS 15 1 Sub woofer e Subbass system for ECS Series Systems e Extended bass response e 400 W power handling capacity e High excursion DL15X woofer speaker systems are located side by side For operation at very low frequencies the woofer cones mutually couple acting as one system with twice the effective cone area and power handling capacity of a single system Efficiency is doubled by the increased cone area to provide 3 dB more output while the doubled power capacity provides the potential for an additional 3 dB gain in maximum acoustic output Mutual coupling occurs when the center to center distance between woofers is less than one half wavelength When the woofers are spaced greater than one half wavelength as would occur if two ECS15 1 were widely spaced the level increase is limited to the 3 dB input power increase ENCLOSURE CONSTRUCTION The ECS15 1 enclosure uti
4. fastened To to the enclosure using four sturdy dual lock average or continuous level which our 209 625 1330 1 S fasteners The grille assembly can be removed ears interpret as loudness but also short 8 quickly and easily allowing access to the term peaks which are many times higher than In Europe drivers by firmly pulling on the two black the average just like the actual program The Mark IV Audio AG Keltenstrasse 5 polyester ribbon loops provided long term average level stresses the speaker CH 2563 Ipsach Switzerland thermally heat a SUBPASSBAND SPEAKER PROTECTION The instantaneous peaks test mechanical In Germany g Below the enclosure tuning frequency cone reliability cone and diaphragm excursion Mark IV Audio F excursion increases rapidly Since acoustic Note that the sine wave test signals sometimes Hirschberger Ring 45 output is also falling rapidly there is no advan used have a much less demanding peak value D 94302 Straubing 3 tage in driving the system with signals much relative to their average level In actual use gt below the tuning frequency While such signals long term average levels exist from several Electro Voice also maintains complete x may be in the program material they are often seconds or greater but we apply the long term facilities for non warranty service extraneous such as from record surface average for several hours adding another amp irregularities or a dropped micr
5. lizes a structural material that combines the strength of high quality plywood with the density and acoustic damping of particle board without brittleness Road Wood uses the same principle of crossbanding veneers as in plywood in 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 heat and pressure to form panels of superior uniformity Unlike many grades of plywood Road Wood is dimensionally stable water resistant and free from voids A combination of dado cut joints tough adhe Sives and proper bracing ensure a sonically dead enclosure free from panel resonances a F a Chr atin gt ee ae Specifically the ECS 15 1 is designed to with stand the power test described in the EIA Standard RS 426A The EIA test spectrum is a oe a cod os ol i oo N E F applied for eight hours To obtain the spectrum ee So ee ee eee ce eee OS ee ee en ca SE E E E E S S E the output of a white noise enerator white ep EEE ON sie gape ait igi 2 rpe Tt Tetere e eeN noise is a particular type of random noise with gt Feee lo i a equal energy per bandwidth in Hz is fed to a i a a ee ieee a ee ee SE Se et a E 2 MeN AOp EED AR DN YS SR a ew a Se pa shaping filter with 6 dB per octave slopes E aaa a a e oe R S E SOO A or a oo below 40 Hz and above 318 Hz When mea l Fee E A H led
6. octave slope abouve 1 200 Hz This shaped signal is sent to the power amplifier with the continuous power set at 400 watts into the 6 9 ohms EIA equivalent impedance 52 5 volts true RMS Amplifier clipping sets instantaneous peaks at 6dB above the continuous power or 1 600 watts peak 105 volts peak This procedure pro vides a rigorous test of both thermal and mechanical failure modes WARRANTY Limited Electro Voice speaker and speaker systems excluding active electronics and accessories 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 the proper Electro Voice service facility Unit will be returned prepaid Warranty does not cover finish or appearance items or malfuntion due to abuse or operation at other than specified conditions Repair by other than Electro Voice or its authorized service agencies will void this guarantee For shipping address and instructions on return of Electro Voice products for repair and locations of authorized service agencies please write Service Department Electro Voice Inc 600 Cecil Street P O Box 186 Buchanan Michigan 49107 Phone 616 695 6831 or Electro Voice West 8234 Doe Ave P O Box 3297 Visalia CA 93277 SO SS a a TE Ae i san MARK IV AUDIO AG Keltens
7. ophone High extra measure of reliability Specifications subject to change without notice output subwoofer systems such as the ECS 15 1 should be protected with a 40Hz high pass filter having 12 dB per octave rolloff Subpassband filters are found in many commercially available crossovers and equa lizers such as the Electro Voice XEQ 3 CROSSOVERS AND AMPLIFIERS To achieve optimum performance the ECS 15 1 should be used with an active crossover having a crossover frequency of 100 to 250 Hz with a minimum slope of 12 dB per octave The output of the crossover is then connected to a power amplifier which drives the speaker system A power amplifier with a rated output between 400 and 800 watts RMS is recom mended for optimum performance While it is acceptable to use amplifiers with less output maximum acoustic output will not be achieved A passive crossover with similar charac teristics can also be used POWER HANDLING CAPACITY To our knowledge Electro Voice was the first U S manufacturer to develop and publish a power test related to real life conditions First we use a random noise input signal because it contains many frequencies simul taneously 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 with a 3 dB per
8. trasse 5 CH 2563 Ipsach Switzerland Phone 032 516833 Fax 032 511221 a MARK IV company EE U IFS Eat saa FE GEESE ers 4
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