Electro-Voice EVX-184 User's Manual
Contents
1. TT NATI T c NE EEI AA A Des AS Cott inh due Ii ACCA ANS T TTE A BERA O T INTA INAI EI UII T CCST PTT TT EXT TUNE LIT 60 WATTS Impedance Response T TETTE s COO ee EMIT TIC ECE KS He Ld 3008 FUEQU amp NCY Ih HAATI MULTIPLE DRIVER APPLICATION When used in arrays and multiple driver bass boxes the system Thiele Small parameters can be synthesized as follows This data should be used for multiple driver configurations Two 2 Drivers f 19 4 Hz Q 0 229 Vas 65 3 Cu ft 1848 L Four 4 Drivers f 18 6 Hz Q 0 238 Vas 130 0 cu ft 3679 L a MARK IV company Designers will find the following equation useful in tuning their enclosures S duco Misa D cea 3 7 x 10 V fa Length of vent or thickness of baffie for hole in baffle in inches Area of vent in square inches Volume of box in cubic feet Box tuning in Hz Radius of vent in inches 1 7 for a hole in baffie 1 5 for a tube eene cf 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 er replaced at our option witho2. Part Number 530758 723
3. SPECIFICATIONS Power Handling 1000 watts continuous program Voice Coil Diameter 100 mm 4 in Sensitivity SPL 1 W 1 M 100 800 Hz Average 96 dB Impedance EVX 180 8 ohms EVX 184 4 ohms Frequency Response 20 1500 Hz Highest Recommended Crossover 500 Hz Magnet Assembly Weight 8 3 kg 18 3 Ibs THIELE SMALL PARAMETERS f 20 Hz R 9 0 ohms EVX 180 2 7 ohms EVX 184 Q 0 220 Qs 4 71 Qas 0 231 Vas 922 L 32 7 Cu ft Sp 0 125 sq m 194 sq Xmax 10 2 mm 0 40 in Displacement Limit 40 6 mm 1 6 in peak to peak No 3 08 Pe 600 watts EIA RS 426A 500 watts continuous sine wave DESCRIPTION The EVX 180 series low frequency transducers are designed for professional sound reinforcement or studio monitoring applications that require maximum output with low distortion EVX 180 and EVX 184 woofers provide unprecedented power capacity linearity and excursion made possible by the HeatWick total thermal engineering design The proprietary HeatWick design actually wicks heat away from the voice coil significantly increasing power handling and long term reliability A special frame extension and elongated pole piece provide a metal surface with close proximity to the entire length of the voice coil providing a major heat transfer path Also the 100 mm 4 in diameter voice coil is longer than conventional medium efficiency woofers to give additional power hand
4. FREQUENCY Hz P EEE T Mii REVERBERENT FIELD OF S esee 200 SABINS ABSORPTION eters 20 30 50 100 204 500 1000 2000 5022 10200 20000 FREQUENCY IN HERTZ FIGURE 5 Theoretical Low Frequency Maximum Acoustic Output vs Frequency 283 L 10 Enclosure Tuned to 30 Hz i eT T a dH H FIGURE 2B EVX 180 and 184 Single Driver Low Frequency Performance 223 L 8 ft Enclosure Performance 283 L 10 3 Enclosure Performance 336 L 12 5 ft3 Enclosure PREQUENCY IN HERTZ FIGURE 2C EVX 180 and 184 Single Driver Low Frequency A AA LT T ETE FT TT T VLU LE E EDHIE TT T T PL A T T T T T T T IAN ET LEHTIE ET FTTTITIE T 92 226 Lo d 10000 22001 FIGURE 2E EVX 180 and 184 Multiple Driver Low Frequency Performance 4 Drivers in 1132 L 40 ft Box or 2 566 L 20 ft3 Boxes in Close Proximity Tuned to 28 Hz DIRECTIVITY INDEX D dB E o 20 350 50 100 200 500 1000 2000 S000 10000 20000 FREQUENCY IN HERTZ FIGURE 4 Directivity Index vs Frequency EVX 180 TL3512 in a 255 L 9 0 ft Enclosure 400 Hz 800 2 1500 Hz FIGURE 6 Polar Response DIRECTIONAL PERFORMANCE The directional characteristics of the EVX 180 and EVX 18
5. EVX 184 at these frequencies is much reduced com pared to sealed or open back enclosures directly reducing harmonic distortion and the possibility of speaker bottoming Several specific vented enclosure recommendations are on the previous page Alternate tunings are given so that designers can tailor the low frequency response to their specific needs Figure 5 shows the maximum acoustic power output versus frequency The maximum output is limited by either 1 the thermal power handling capacity or 2 the speaker s maximum cone excursion capabilities whichever occurs first Also vided are recommended enclosures for multiple driver configurations STEP DOWN OPERATION For extra low bass use the vent area can be reduced by one half thereby tuning the enclosure to the step down mode in step down the tuning frequency is reduced by half an octave a factor of 0 7 The resulting alignment is then equalized for flat response This procedure results in one half octave lower bass without any excursion penalty ARCHITECTS AND ENGINEERS SPECIFICATIONS The low frequency transducer shall have a nominal diameter of 460 mm 18 in overall depth not greater than 198 mm 7 92 in and weight no more than 11 kg 25 Ibs The frame shall be made of die cast aluminum to resist deformation The magnetic assembly shall have an extended pole piece to reduce inductive variances with excursion and provide a symmetrical
6. rating Coil Form Polyimide Magnet Frame Cast aluminum Thermal Rise after Power Test 82 degrees C 147 degrees F Recommended Enclosures 7 13 cubic foot 198 L 368 L Magnet Plating Bright cadmium Physical Constants Effective Piston Diameter 398 15 7 in Total Moving Mass 0 125 kg Voice Coil Winding Depth 28 mm 1 1 in Top Plate Thickness at Voice Coil 8 9 mm 0 35 in Z min 7 ohms EVX 180 4 ohms EVX 184 Factor 20 3 Tm EVX 180 14 2 Tm EVX 184 Thiele Small Parameters fg 20 Hz R 5 0 ohms EVX 180 2 7 ohms EVX 184 Qs 0 220 4 71 Qs 0 231 Vas 922 L 32 7 cu ft 54 0 125 sq m 194 sq in 10 2 mm 0 40 in no 3 0896 Pe 600 watts EIA RS 426A 500 watts continuous sine wave Response in Standard Baffle S Ln TT LLL e UA ALTI T AL Hn Y ELLE J ETE 101011111088 LA Hill LUE NTT T FREQUENCY m NOTE AES requires large planar baffle for this test WHICH IS INTENDED TO SHOW SMOOTHNESS AND OFF AXIS RESPONSE NOT BASS RESPONSE This has proven to be inconvenient and prohibitive due to its size Here we have chosen our lab standard low diffraction 12 cubic foot test enclosure which will demonstrate the same characteristics as the AES standard baffle EY Distortion Response pd PT ET LEE LT ELI T T Wan UTE ET LA LE
7. 4 in the TL3512 256 L 9 03 vented enclosure were measured by running a set of polar responses in EV s large anechoic chamber The test signal was octave band limited pseudo random pink noise centered at the ISO standard frequencies The curves show horizontal side to side dispersion when the enclosure s long axis is vertical The vertical up and down polar responses deviate only slightly from the horizontal responses due to box geometry Typical data is provided in Figures 3 and 4 which indicate 6 dB down beamwidth versus frequency and directivity factor respectively for an EVX 180 or EVX 184 in the TL3512 enclosure POWER HANDLING TEST 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 signa because it contains many frequencies simultaneously just ike 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 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 di
8. aphragm excursion Specifically the EVX 180 and EVX 184 are designed to withstand the power test described in EIA Standard RS 426A The EIA test specirum 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 siopes 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 The signa has a 6 dB crest factor This procedure provides a rigorous test of both thermal and mechanical failure modes The EVX 180 and EVX 184 have also been power tested with a two hour sine wave at minimum impedance so that competitive comparisons can be made using consistent methods Continuous program power is defined as 3 dB above double the continuous sine wave power rating RECOMMENDED ENCLOSURES The most extended lowest distortion and best controlled bass performance is usually realized in properly designed vented enclosures In such designs the vent or port actually provides the lowest octave of output The vent is driven to full acoustic output by a relatively small motion of the speaker cone itself acting through the air contained within the enclosure The excursion of the EVX 180 and
9. ctro Voice EVX 184 model AES SPECIFICATIONS The following specifications are in accor dance with the 5 Draft Recommended Practice for Specification of Loudspeaker Components Used in Professional Sound Reinforcement Systems 1983 Dimension and Weight Outer Diameter 46 cm 18 2 in Depth 20 cm 7 92 in Bolt Hole Diameter 7 1 mm 0 281 in Net Weight 11 3 kg 25 Ib Shipping Weight 14 kg 31 16 Mounting The EVX 180 and EVX 184 may be front or rear mounted against either surface of the mounting flange and requires a 422 mm 16 6 in diameter cutout and a 441 mm 17 38 in bolt circle Normal fasteners up to 6 mm in will fit through the eight holes in the frame Front mounting is simplest us ing the optional SMH 1 speaker mounting kit Electrical Connections The EVX 180 and EVX 184 are fitted with a pair of chrome plated frame mounted con nectors with color coded ends Electrical con nection is made by pushing down inserting wire completely through the rectangular slot and releasing pressure One conductor of 9 AWG stranded 8 AWG solid a pair of twisted 15 AWG stranded or a pair of 814 AWG solid conductors will fit A positive electrical signal applied to the red terminal will displace the cone away from the magnet thus producing a positive acoustic pressure ADDITIONAL DESCRIPTIVE INFORMATION Voice Coil Material Aluminum Voice Coil Insulation Polyimide 220 degree C
10. d distortion by preventing amplifier signal modulation of the static magnetic field Rubber Mounting Flange Gasket Provides a reusable seal for front or rear mounting completely surrounding the frame flange 1 000 Watt Continuous Program Power capacity without efficiency sacrifice for extremely high output with low distortion TET oo m so LA ELE LLLI ELIT e E se LL TIE diga FILE e LUE kd T 40 Hz tuning a0 s wo 159 FREQUENCY IN HERTZ FIGURE 2A EVX 180 and 184 Single Driver Low Frequency AT TE LT LA LEE EE TTT TT TTT L T EI L 1900 09 SPL in d8 amp FREQUENCY IN HERTZ FIGURE 2D EVX 180 and 184 Multiple Driver Low Frequency Performance 2 Drivers in a 566 L 20 3 Box or 2 283 L 10 ft Boxes in Close Proximity Tuned to 30 Hz hh wt i AAE oe Beh VT HH Mes LT EHE unl mS zi GRENED S LAB sim 1 BIE LI 2 rl IUIS 1 eS Eo qp ITE Mab aS 4 tt NL FLUTE m EE IE 1 500 1000 2000 5000 1 20000 HORIZONTAL VERTICAL A FIGURE 3 Beamwidth vs Frequency EVX 180 TL3512 in a 255 L 9 0 Enclosure Tr NT wow 8 S8 BEAMWIDTH IN DEGREES 6 dB 85 888
11. ling and virtually eliminate dynamic range power compression Additionally a Flux Demodulation Device FDD V reduces distortion in the critical midband by providing a short circuit effect to prevent amplifier signal modulation of the static magnetic field To further increase reliability PROTEF Teflon coating is applied to the internal diameter of the and top plate PROTEF lubricates any rubbing contact and electrically insulates the coil from the FDD and top plate to guard against violent short term power peaks A ribbed carbon fiber composite cone with an extrernely high stiffness to weight ratio gives the EVX 180 series increased resistance to cone collapse and deformation without sacrificing efficiency Patent 4 547 632 Elecliro Voice a MARK IV FIGURE 1 Axial Frequency Response 1 Watt 1 Meter 10 Cubic Foot Enclosure EVX 160 EVX 104 18 Inch Low Frequency Reproducers FEATURE HIGHLIGHTS HeatWick Design Provides advanced thermal engineering to wick heat away from the voice coil for increased power handling and reliability Extended Length 100 mm 4 in Voice Coil Has nearly twice the surface area of any other woofer to virtually eliminate dynamic range power compression Carbon Fiber Composite Cone For added protection against cone collapse and breakup without adding efficiency robbing weight Flux Demodulaton Device FDD Considerably reduces midban
12. magnetic field at the voice coil gap Two aluminum rings shall encircle the pole piece above and below the magnetic gap and shall have internal diameters concentric with the internal diameter of the steel top plate The upper ring shall be part of the loudspeaker frame Both rings act to reduce flux modulation and provide a heat transfer path from the outer diameter of the voice coil The inner diameter of the steel top plate and the lower aluminum ring shall be Teflon coated The voice coil shall be 100 mm 4 in in diameter and 28 mm 1 1 in in winding length and shall be made of edgewound aluminum ribbon When centered in the magnetic gap the voice coil shall produce a force of not less than 20 2 Newtons Tesla Ampere Meters with a dc current of 1 ampere Performance specifications of a typical production unit shall be as follows Measured sensitivity SPL at 1 m 3 3 ft with 1 watt input averaged between 100 800 Hz pink noise shall be at least 96 dB The half space reference efficiency shall be at least 3 096 The usable frequency response shall be 20 Hz to 1500 Hz and the nominal impedance shall be 8 ohms The rated power for the loudspeaker shall be 1000 watts normal program material The low frequency transducer shall be the Electro Voice EVX 180 A low frequency transducer as described above with a 4 ohm nominal impedance and an axial voice coil force of 14 2 Newtons with 1 ampere of current shall be the Ele
13. ut 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 Electro Voice Inc 3810 148th Avenue N E Redmond WA 98052 AC 206 881 9555 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 600 Cecil Street Buchanan Michigan 49107 Specifications subject to change without notice ELECTRO VOICE 600 Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT ll BUCHANAN MI E NEWPORT TN 8 SEVIERVILLE TN W REDMOND WA E GANANOQUE ONT C Eiectro Voice Inc 1987 Litho In U S A
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