Electro-Voice SH-1502ER User's Manual
Contents
1. SPECIFICATIONS Frequency Response 10 Feet on Axis Swept Vs Octave Half Space Anechoic Environment see Figure 1 62 20 000 Hz Low Frequency 3 dB Down Point 62 Hz Usable Low Frequency Limit 10 dB down point 46 Hz Half Space Reference Efficiency 4 1 Long Term Average Power Handling Capacity per EIA Standard RS 426A see Power Handling Capacity section 200 watts Maximum Woofer Acoustic Output 8 2 watts Sound Pressure Level at 1 Meter 1 Watt Input Anechoic Environment Band Limited Pink Noise Signal 300 2 000 Hz 102 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 Horizontai see Figure 3 110 50 5 000 10 000 Hz Vertical see Figure 3 46 t5 Directivity Factor Rg Q 800 16 000 Hz Median see Figure 4 11 0 3 5 4 5 Directivity Index D 800 16 000 Hz Median see Figure 4 10 5 dB 1 dB 2 5 dB Distortion 0 1 Full Power Input Second Harmonic 100 Hz 3 1 000 Hz 1 10 000 Hz 14 Third Harmonic 100 Hz 1 1 000 Hz 195 10 000 Hz 496 Distortion 0 01 Full Power Input Second Harmonic 100 Hz 196 1 000 Hz 196 10 000 Hz 596 Third Harmonic 100 Hz lt 1 000 Hz 196 10 000 Hz 196 Transducer Complement P er H 2010A 90 x 40 constant directivity horn Low Frequency EVG 15 Box Tuning Frequency 55 Hz Crossover Frequency 1 600 Hz Crossover Slope 12 dB per octave Imped2. The bass section of the SH 1502ER is designed as a vented horn format of system for a projected midrange sound quality combined with low frequency performance extending to below 60 Hz The new Electro Voice EVG 15 15 inch woofer features an extended length voice coil and high temperature construction materials JE Wi Gees SX 7 SEE FIGURE 2 Polar Response 1 3 octave pink noise 4 volts 10 feet To lt PRR ST eeammoma TUTTE EC pedis I PP TT ie BIRD 7 za mco oT LE PAM mme THEE ELLE E D s sisssst E DBBBHEI Z 1597 g E FREQUENCY IN HERTZ FIGURE 3 Beamwidth vs Frequency Whole Space anechoic NUMBERS INDICATE UNUS piRECTIViTY 7 A ORG VALUES e cghScrrcNc eg DIRECTIVITY FACTOR IT cg a A Pera INDEX Re a eagair T PY ipu lj Dj dB E X B8B 3 8 FREQUENCY IN HERTZ FIGURE 4 Directivity vs Frequency Whole Space anechoic 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 a special system type the constant directivity system At higher frequencies the horizontal coverage pattern remains constant and the vertical pattern smoothly transitions to a 40 to 50 angle above 5 000 Hz Response within the 90 x 40 rate
3. SH 1502ER speaker system is ideally suited to a long and reliable life on the road FREQUENCY RESPONSE The combination of a 15 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 using swept s octave No external equalization was used DIRECTIVITY A unique feature of the SH 1502ER 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 s octave pink noise inputs The frequencies selected are fully represen tative of the polar response of the system Beamwidth of the system utilizing the complete s octave polar data is shown in Figure 3 Rg Q and directivity index D 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 test closely related to real life conditions First we use a random noise input signal because it contains many fre quencies 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 reliability Third
4. ance Nominal 8 ohms Minimum 6 6 ohms Input Connections Parallel V4 in phone jacks allows paralleling of multiple speakers Enclosure Materials and Colors Black carpet covered Road Wood Dimensions 81 0 cm 31 9 in high 62 7 cm 24 7 in wide 40 6 cm 16 0 in deep Net Weight 36 7 kg 81 Ibs Shipping Weight 40 0 kg 88 Ibs Optional Accessories SMK 1 stand mounting kit 100BK speaker stand Electro Voice Model SH 1502ER Horn Loaded Stage Speaker System DESCRIPTION The Electro Voice SH 1502ER is a 200 watt two way high efficiency constant directivity stage system featuring a vented horn loaded woofer section It combines professional quality components arranged in a vertical array with an unusually durable enclosure The result is wide range accurate sound reproduction with transparent highs and punchy bass response The enclosure is constructed of Road Wood a structural material made of layered and selectively oriented hardwood strands strongly bonded together with phenolic resins This high strength shell is covered with densely woven abuse resistant black carpeting The high frequency section of the SH 1502ER utilizes a 90 x 40 constant directivity horn driven by a one inch throat wide bandwidth titanium diaphragm driver This driver uses a unique convex drive Time Path phasing plug structure U S Patent 4 525 604 for smooth and extended high frequency performance
5. d 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 directivity of the high and low frequency transducers also eliminates response irregularities caused by diffraction off nearby enclosure edges ENCLOSURE CONSTRUCTION The SH 1502ER enclosure utilizes a struc tural 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 adhesives and proper bracing ensure a sonically dead enclosure free from 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
6. gencies 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 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 Cecil Street Buchanan Michigan 49107 Specifications subject to change without notice
7. ier clipping sets instantaneous peaks at 6 dB above the continuous power or 800 watt peak 69 2 volts peak This procedure provides a rigorous test of both thermal and mechanical failure modes STAND MOUNTING The SH 1502ER can be mounted on the 100BK speaker stand or any other stand with a 13 inch diameter shaft by installing the optional SMK 1 stand mounting accessory kit available from Electro Voice The kit consists of a flush mount insert and four mounting bolts Instructions for mounting are included with the SMK 1 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 tion 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 a
8. the test signa 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 that the sine wave test signals sometimes used have a much less demand ing peak value relative to their 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 SH 1502ER is designed to withstand the power test described in 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 1 200 Hz with a 3 dB per octave slope above 1 200 Hz This shaped signal is sent to the power amplifier with the continuous power set at 200 watts into the 6 0 ohms EIA equivalent impedance 84 6 volts true RMS Amplif
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