Electro-Voice S-80A User's Manual
Contents
1. CC LA LEER EEEE A KEELEE 44595 Oded ced on dd da aa 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 be cause it contains many frequencies simulta neously just like real voice or instrument pro gram Second our signal contains more energy at extremely high and low frequencies than typical actual program adding an extra mea sure of reliability 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 reli ability cone and diaphragm excursion Note thatthe sine wave test signals sometimes used have a much less demanding peak value rela tive 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 S 80A is designed to withstand the power test described in EIA Standard RS 426A The EIA test spectrum is applied for eight hours To obtain2. SPECIFICATIONS Frequency Response 1 Watt 1 Meter on Axis Swept Sine Wave Input Half Space Anechoic Environment 3 dB see Figure 1 80 15 000 Hz Low Frequency 3 dB Down Point 80 Hz Usable Low Frequency Limit 10 dB Down Point 50 Hz Half Space Reference Efficiency 1 2 Long Term Average Power Handling Capacity per EIA Standard RS 426A see Power Handling Capacity section 100 watts Maximum Woofer Acoustic Output 1 2 watts Sensitivity SPL at 1 meter 1 watt input anechoic environment band limited pink noise signal 300 2 000 Hz 91 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Horizontal and Vertical Planes Indicated One Third Octave Bands of Pink Noise see Figure 2 500 1 000 Hz 130 50 1 000 10 000 Hz 90 20 10 000 20 000 Hz 60 30 Directivity Factor R Q 800 16 000 Hz Median see Figure 4 9 3 14 7 4 2 Directivity Index D 800 16 000 Hz Median see Figure 4 9 7 dB 4 1 2 9 dB Distortion 0 1 Full Power Input see Figure 5 Second Harmonic 100 Hz 2 1 000 Hz lt i 10 000 Hz 1 7 Third Harmonic 100 Hz 1 1 1 000 Hz lt 1 10 000 Hz lt 1 Distortion 0 01 Full Power Input see Figure 6 Second Harmonic 100 Hz lt i 1 000 Hz 196 10 000 Hz 196 Third Harmonic 100 Hz 1 096 1 000 Hz 196 10 000 Hz 196 Transducer Complement High Frequency 3 2 cm 1 25 in tweeter with 14 cm 5 5 in Direktor Low Frequency
3. 22 9 Ib DESCRIPTION The Electro Voice S 80A is a compact two way constant directivity speaker system for sound reinforcement and monitoring Its small size high sensitivity and high power handling capacity make it an excellent choice for use in studios clubs bars theaters or other applica tions The combination of optimal crossover frequency and high frequency dispersion controlling Direktor ensures uniform audi ence coverage throughout eliminating the prob lems of hot spots and dead zones that might occur at certain frequencies with other two way speaker systems The low frequency section is 20 3 cm 8 in direct radiating woofer installed in an optimally vented enclosure This results in exceptionally extended bass response and high efficiency in a very small cabinet 1 OmniMount is a registered trademark of OmniMount Systems Inc 2 FIGURE 1 Axial Frequency Response FIGURE 2 Polar Response 100 Rea Ms COOMA FEET COIL LE SPL IN dB FREQUENCY IN HEPT2 FIGURE 3 Beamwidth vs Frequency whole space anechoic environment a E 1000408 1 T basai 75 woos oo LIE EEN LE 07 9 008 05 FREQUENCY 0 BEAMWIDTH IN DEGREES ec SE SR EEE ESES NE NEO CBEST FIGURE 4 Direc
4. combined with an essentially flat on axis response produces a total acoustic power output that is uniform with frequency FREQUENCY RESPONSE The S 80A s axial frequency response was measured in Electro Voice s large anechoic chamber at a distance of 10 feet with a swept sine wave input of four volts No additional equalization was used Figure 1 has been aver aged and corrected for 1 watt at 1 meter DIRECTIVITY The directional characteristics of the S 80A were measured in Electro Voice s large anechoic chamber The test signal was one third octave filtered pink noise at the frequen cies indicated A full spherical measurement system was used which is compatible with the AcoustaCADD computer aided design pro gram All directional information was measured at 20 feet Figure 2 illustrates the horizontal and vertical polar responses Figure 3 shows the horizontal and vertica beamwidths Beamwidth is the angle at which the horizontal and vertical polar responses have decreased in level by 6 dB when com pared to the axial frequency response Figure 4 illustrates the total directivity of the S 80A The directivity index D is calculated using the formula 10 log R 1 OmniMount is a registered trademark of OmniMoun Systems Inc 22222 22222122222221222 HU
5. mended between the edge of the loudspeaker and the edge of the CRT Thefrontsection ofthe enclosure is constructed from high impact ABS plastic and the rear section is constructed from vinyl covered par ticle board Both sections have been specially treated to allow the enclosure to be painted using commonly available finishes The sys tem can be mounted using OmniMount Series 75 mounting hardware see Suspending the S 80A section CONSTANT DIRECTIVITY FIGURE 8 Dimensions SPEAKER SYSTEM The crossover frequency and speaker component geometries have been carefully selected so that the directional characteristics of the woofer and Direktor match at the cross over frequency approximately 90 degrees cir cular coverage patterns for each to create a special system type the constant directivity system At higher frequencies the horizontal and vertical coverage pattern remains essen tially constant Response within the 90 x 90 23 4 em 27 2 rated coverage angle is uniform which means Ex a Ex e 1 dependable audience coverage without hot spots or dead zones at certain frequencies The 90 x 90 dispersion characteristic permits this small system to be used either horizontally or vertically allowing greater flexibility in setup or installation The controlled directivity of the high and low frequency transducers also elimi nates response Irregularities caused by diffrac tion off enclosure edges This
6. 2 829 8000 Fax 602 756 9000 WARNING IT IS THE RESPONSIBILITY OF THE INSTALLER TO ENSURE THAT THE MOUNTING SURFACE HAS SUFFICIENT RIGIDITY TO SUPPORT THE S 80A AND THAT THE MOUNTING BRACKET IS COR RECTLY FITTED TO THE SURFACE AND TO THE 5 80 Ey Electro Voice Inc pss T 2 2 9 5 25 2 9 ths 9 H I S o2 2 953 Ca aaa im Pr EE 455 CONNECTION There are two types of input connectors supplied with the S 80A screw terminals and 4 inch phone jacks These are all connected in parallel to enable further boxes to be connected When S 80A s are connected in parallel care should be taken with the resulting total imped ance Since the S 80A has an impedance of 8 ohms when three or more S 80A s are paral leled the total impedance will drop to less than three ohms Normal power amplifiers may have difficulty driving such impedances Your dealer should be able to advise you Care should be taken to ensure that the correct polarity is observed when connecting the S 80A the screw terminals are marked with and symbols CONSTRUCTION The S 80A s baffle board is constructed from molded plastic and the enclosure from particle board covered with vinyl The S 80A is supplied in an all black finish and can be painted if required Both the baffle board and the enclosure have been specially treated to enhance the adhesion of paints The S 80A has been tested with several commercially available paints wi
7. 20 cm 8 in woofer Box Tuning Frequency 40 Hz Crossover Frequency 2 000 Hz Crossover Slope 12 dB per octave Impedance Nominal 8 ohms Minimum 5 ohms Input Connections Screw terminals and parallel 4 in phone jack Materials Enclosure Black vinyl covered particle board Speaker System e Two way compact system Constant directivity system for uniform coverage 8 0 inch woofer e 1 inch tweeter with dispersion controlling Direktor Automatically resetting tweeter protection circuit Screw terminals plus 1 inch phone jack allows connection of multiple S 80A s in parallel e Speaker baffle easily rotates 180 ensuring flexibility in installation vti ei eS a ei eee ee US IDEE lt 425 2 Se ie PRR lt SRR Qa UND P NI ee aes se ees alk ela spi V VIN aone 22 286 82222 2 9 FERE 3330923 TENUES SAY PUR Col o Saa t8 RRS TORTE 6 S 302 9434 29 XR RADI SORS RN EROR A Ad ab SORS OH Sc C eet CE Rae HOY SERA SITAR ene Baffle Board Injection molded plastic Grille Punched metal Mounting EV S 80MB mounting bracket or OmniMount Series 75 mounting hardware see Suspending the S 80A section Dimensions see Figure 8 Height 40 0 cm 15 8 in Width 27 2 cm 10 7 in Depth 21 5 cm 8 5 in Net Weight 7 6 kg 16 7 Ib Shipping Weight 10 4 kg
8. g the specified period the product will be repaired or replaced at our option without charge The product will be returned to the customer pre paid Exclusions and Limitations The Lim ited Warranty does not apply to a exterior finish or appearance b certain specific items described in the individual product line statement s below or in the individual product data sheet or owner s manual c malfunction resulting from use or operation of the product other than as specified in the product data sheet or owner s manual d malfunction re sulting from misuse or abuse of the product or e malfunction occurring at any time after re pairs have been made to the product by anyone otherthan Electro Voice or any of its authorized service representatives Obtaining Warranty Service To obtain warranty service a cus tomer must deliver the product prepaid to Electro Voice or any of its authorized service representatives together with proof of purchase of the product in the form of a bill of sale or receipted invoice A list of authorized service representatives is available from Electro Voice at 600 Cecil Street Buchanan MI 49107 616 695 6831 or 800 234 6831 Incidental and Consequential Damages Excluded Product repair or replacement and return to the cus tomer are the only remedies provided to the customer Electro Voice shall not be liable for any incidental or consequential damages in cluding without limitation injury to pe
9. lly destroy the tweeter ARCHITECTS AND ENGINEERS SPECIFICATIONS The loudspeaker system shall be a constant directivity two way system The speaker sys tem shall contain a 20 cm 8 0 in low frequency loudspeaker and a 3 2 cm 1 25 in high frequency tweeter with dispersion control ling Direktor and an automatically resetting tweeter protection circuit The dividing network crossover frequency shall be 2 000 Hz The loudspeaker system shall meet the following m sisti cols porro pw wid Oe elec dud ddddds dde Hune per EIA R5 426 response 3 dB from 80 to 15 000 Hz pressure sensitivity 91 dB SPL at 1 watt 1 meter band limited pink noise an anechoic chamber impedances 8 ohms nominal 5 ohms minimum The enclo sure shall be of two piece construction with particleboard cabinet anda molded plastic baffle The unit shall be 40 0 cm 15 8 in high 27 2 cm 10 7 in wide and 21 5 cm 8 5 in deep The loudspeaker system shall be the Electro Voice model S 80A UNIFORM LIMITED WARRANTY Electro Voice products are guaranteed against malfunction due to defects in materials or work manship for a specified period as noted in the individual product line statement s below orin the individual product data sheet or owner s manual beginning with the date of original purchase If such malfunction occurs durin
10. rsons or property or loss of use Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation orexclusion may notapply to you Other Rights This warranty gives you specific legal rights and you may also have other rights which vary from state to state Electro Voice Speakers and Speaker Sys tems are guaranteed against malfunction due to defects in materials or workmanship for a period of five 5 years from the date of original purchase The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and or coil damage resulting from improp erly designed enclosures Electro Voice active electronics associated with the speaker sys tems are guaranteed for three 3 years from the date of original purchase Additional details are included in the Uniform Limited Warranty statement Service and repair address for this product Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 616 695 6831 or 800 234 6831 Specifications subject to change without notice ELECTRO VOICE a MARK Vc company 600 Cecil Street i ica Michigan 4 491 07 MANUFACTURING PLANTS AT BUCHANAN MI 8 NEWPORT TN SEVIERVILLE TN B OKLAHOMA CITY OK E GANANOQUE ONT 2 a Scu OVAA binos maor roneo 9421 Dobbins SISA ahhh sh he des Sod es cane Sea ey ERS ES T9 PP rir Er rr A E RRRA IAA AN TTT WET I 5
11. th suc cess Electro Voice cannot however guaran tee that all commercially available paints will be salisfactory It is therefore recommended that a small area should be tested with the paint in order to ensure that there are no adverse effects and that the paint has sufficient adhe sion Care should be taken not to get paint onto the woofer cone or the tweeter screen The speaker baffle can be rotated 180 relative to the enclosure in order to position the tweeter symmetrically forstereo applications Also when the box is suspended vertically from the ceiling or mounted on the stand the tweeter can be positioned either above or below the woofer by rotating the baffle see Figure 9 In order to rotate the baffle the following proce dure should be followed see Figure 10 1 Gently ease off the metal woofer grille which is held by rubber strips along its edge 2 Remove the four fixing screws and slide the baffle out of its fixing slots in the cabinet 3 Rotate the baffle as required being careful to ensure that the wires from the crossover do not get disconnected then refit the baffle in the reverse order The EV logo on the front of the box can now be positioned correctly TWEETER PROTECTION CIRCUIT The S 80A crossover is fitted with an automati cally resetting tweeter protection device This new design permits short term transients to pass but protects the tweeter from long term power extremes that would norma
12. 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 an analyzer having the usual constant percentage bandwidth 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 100 watts into the 6 ohm EIA equivalent impedance 24 5 voits true rms Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 400 watts peak 49 0 volts peak This proce dure provides a rigorous test of both thermal and mechanical failure modes SUSPENDING THE S 80A The S 80A is fitted with a number of 6 mm threaded inserts and can be suspended as follows 1 S 80MBis a universal U bracket designed to allow the suspension of the S 80A at any angle and orientation from the wall or ceil ing see Figure 9 Full instructions are included with the S 80MB 2 OmniMount Series 75 support system Four 1 4 20 threaded inserts are located in the rear panel to allow use of the OmniMount Series 75 support system A safety chain should be used to ensure safe operation Full instructions can be obtained from OmniMount Systems Inc 1501 W 17th St Tempe AZ 85281 Tel 60
13. tivity vs Frequency whole space anechoic environment DIRECTIVITY INDEX D dB FIGURE 5 Harmonic Distortion 0 01 Rated Power Input 1 watt PT ET L TTT TT LE LITT T TUT TT a petal ny CTT E Funoamenrar UU i enc Harmonic DI busbar T Ball CATING AT TTT M 20 52 1 399 1690 7004 FREQUENCY IN MERTZ FIGURE 6 Harmonic Distortion 0 1 Rated Power Input LEVEL IN dB 10 watts COM TTT TT TT T PT LE Un A AT TT women LUE LE LTBTHE and HARMONIC V NINE ee LM CATT BT A Walin P AT P LA LE a4 x E 26 909 22 110 FREQUENCY IN MERTZ DIRECTIVITY FACTOR R Q NINNIHHIHNINSONSONINUEENE DEREN t IE TEDUSESEHOUUI SII SEEPS EON IO t iot dti Both drivers feature low leakage magnet de FIGURE 7 An Example of S 80A Mounting Using the OmniMount signs and the wooferis also screened to permit Sarles 75 Support System use close to video monitors For very critical video monitoring applications a minimum dis tance of approximately 10 cm 4 in is recom
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