Electro-Voice FS-212 User's Manual
Contents
1. SHOWN WITHOUT GRILLE SPECIFICATIONS Frequency Response Measured in Fartield Calculated to One Meter on Axis Swept One Third Octave Pink Noise Anechoic Environment see Figure 1 50 20 000 Hz Recommended Crossover Frequency 1 250 Hz Efficiency LF HF 9 25 Long Term Average Power Handling Capacity per EIA Standard RS 426A and AES2 1984 see Power Handling section LF HF 600 75 watts Short Term Power Handling Capacity 10 PLA LF HF 2 400 300 watts Maximum Long Term Average Midband Acoustic Output 2 watts Sound Pressure Level at One Meter Indicated Input Power Anechoic Environ ment Band Limited Pink Noise Signal LF HF 1 1 Watt 101 112 dB 600 75 Watts 129 131 dB 2 400 300 Watts 135 137 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Indicated One Third Octave Bands of Pink Noise 700 20 000 Hz Horizontal see Figure 3 60 40 20 600 20 000 Hz Vertical see Figure 3 40 25 59 Directivity Factor RA Q 600 20 000 Hz Median see Figure 4 159 199 93 Directivity Index D 600 20 000 Hz Median see Figure 4 12 0 dB 2 9 dB 3 9 aB Distortion 120 dB SPL at 1 Meter Shaped Spectrum see Figure 5 Second Harmonic 200 Hz 1 1 000 Hz 0 9 3 000 Hz 3 2 10 000 Hz 1 4 Distortion 120 dB SPL at 1 Meter Shaped Spectrum see Figure 5 Third Harmonic 200 Hz 1 1 1 000 Hz 0 6 3 000 Hz 0 1 10 000 Hz O Transducer Complement LF Two D2. SHORT LABEL Pa Rs OPEN R 84 2 kQ As 28 2 kQ FIGURE 6 Crossover Set Up jiameter 6 anstructed of ec a m m Mam m 4 A v e y hia han 1 f 7 4 f n 4 Gi IrUCI TO 4 y INCh INIcK Finns 26 5 inches high 23 5 inches inches der D ana shall welig pound tcr 4 rye ft gt 2 p g WARRANTY Limited Sneakers and opeaKkert systemi excitl j g ve elect ire guaranteed for five 1 1 p ais MIE L J It J 13 i WOT KITIdat n pe 1 f ICi a 3 A ate 4 e q j e B gt i wr Aj SHY Un v be returned pret VVarrat TS ji extern O 1 appearal t i E ro f i 1 i via ciGenial consequential damages It ii di f t i gt me va V j I rad or antl sin thi ul e ervice agde Wii VOIG Inr ara TOC 41 1 eg NH Al I Je pa r r s f gt LOA a Aj x Oy E von VOS 4 Dr ie V ISdik i 2901 4 AS 777 Fis f PT E y 2 a a eT WT n Vary ri dic sta n P La o v3 n ES b j At v jan 4911 f t ELECT MANUF ACT UR RO VOICE INC 600 IM NEWPOR A IN B SEVIERVILLE TN REI o MARK IV company N W A N A Ni KOU Cecil Street Buchanan Michigan 4 Mg 91 07 AT WN
3. adding an extra measure 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 leve stresses the speaker thermally heat The instantaneous peaks test mechanical reliability cone and diaphragm excursion Specifically the low frequency driver 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 This shaped signal sent to the power amplifier with the continuous power set al 600 watts into EIA equivalent impedance 45 5 volts true rms Amplifier clipping sets instan taneous peaks at 6 dB above the continuous power or 2 400 watts peak 91 0 volts peak Specifically the mgh irequency driver is designed to withstand the AES Standard AES2 1984 ANSI S4 26 1984 The AES test spectrum is applied for two hours To obtain this spectrum
4. the output of a pink noise generator pink noise rs a particular type ol random noise with equal energy per octave bandwidth is fed into a bandpass filter with 12 dB per octave slopes and 3 dB down points at 1 000 Hz and 10 000 Hz This shaped signal is sent to the power amplifier with the continuous power set al 75 watts into the nominal impedance 24 5 volts true rms Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 300 watts peak 49 O volts true rms CROSSOVER EQUALIZATION AND TIME DELAY Recommended for use with the FS 212 is the XEQ 3 electronic crossover The XEQ 3 is a combination crossover equalizer time delay unt which provides the circuitry necessary for optimum performance of the FS 212 When used with the FS 212 the XEQ 3 is first set to its low high two way crossover mode using the switches on the back panel of the unit The front panel settings are then adjusted to the positions shown in Figure 6 Finally a special high frequency EQ module iS inserted This module 1s contructed as shown in Figure 6 using the blank module supplied with the XEQ 3 CONNECTIONS The FS 212 is equipped with ITT Cannon EP 4 connectors for electrical connection to the wooters and compression driver Two Keg OFF rite Fae obl Ep cor connectors are installed one male EP 4 14 for input signal and one female EP 4 13 for paralleling additional FS 212 loudspeakers The mating connectors on the ca
5. L 12X variant woole HF DH1 Impedance Nominal LF HF 1 0 ohms 8 0 ohms Minimum LF HF 7 ohms 6 5 onmes Input Connections ITT Cannon EP 4 14 and EP 4 13 Enclosure Materials Structural 14 ply birch plywood Finish Ris zite Super INT carpet Grille Sto WW t Diack nylon cii i Overi g Dimensions Height 67 3 cm 26 5 Width 59 7 cm 23 5 Depth 2 5 cm 16 6 in Electro Voice a MARK IV company nem kc SE m Tex EO ieee ms SEE 2 LU O TS FIGURE 1 Axial Frequency Response Using Recommended Crossover Equalization and Time Delay 1 Watti Meter into LF Section Model FS 212 Concert Floor Slant Monitor Net Weight o cf su 4 M 4 o4 3 K EU ID v4 Shipping Weight 59 1 ka 130 Ib DESCHIPTION The Electro Voice FS 212 concert slanl monitor was desianed tor high level concert und stage monitoring applications The dL d gt teasers ar bape kann 4 ntes m Y Dd 12 IO d WO Way Dampeg SVSICIT with a gt Poolh lredc jen nor ind if at IG tum c 4 y 4 t trn Le rive j VY 12 inch woolers in an extremely compact re he 12 inch woofers which operate aver the range of 70 1 250 Hz make use of the ec VOICE technology that ieatures the Thermo Inductive Ring TIR and PROTEF coating U S Patent N 4 547 632 The TIR is a non rnagnetic pole piece extension that acts as a control on rive inductance and more importantly es a major heat ransi
6. ble ends should be the EP 4 11 IC for the input connection and the EP 4 12 IC for the loop through connection Cables connectors and wiring accessories are being manufactured for the FS 212 speaker systems by Pro Co Sound Inc and Whirlwind Music Distributors Inc To find your local Pro Co or Whirlwind dealer contact Pro Co Sound Inc 135 E Kalamazoo Ave Kalamazoo MI 49007 Whirlwind Music Distributors Inc P O Box 1075 Rochester NY 14603 The pin out arrangement is as follows Pin 1 LF Pin2 LF 4 Pin 3 HF Pin4 HF The low frequency input presents a 4 ohm load while the high frequency input presents a nominal 8 ohm load to the amplifier The compression driver has a low frequency protection capacitor in series FIELD REPLACEMENT The FS 212 was designed for expedient field service Loosening the four woofer clamp bolts allows the woofer to be easily removed A woofer failure will require replacement of the entire driver In the case of a compres sion driver failure a diaphragm assembly replacement kit with instructions s available The diaphragm may be replaced without removing the driver by using the driver access panel on the back of the enclosure If desired the complete driver may be return ed for service The following replacement parts are available from the Electro Voice service department in Buchanan Michigan LF complete woofer EV Part No 812 1199 HF diaphragm kit EV Par
7. er path trom the Jp of the voice coi minum C ompre MON PRO Ef Teflon based coating applied to the top late thal protects the voice coil during v oleni power peaks Ey c F equencies FS 2 ze m MH 1j Af tre 31 con MESSI iriver inique one piece geometrically optimized titanium dome and suspension combined with its unusually powerful magnetic motor ie Maximum emcency and precise phra na A hig B esl r ITEF ea xcalie evant ranon The compression driver is coupled to an HP64 60 x 40 fiberglass horn This flat front constant directivity horn is a member of the Electro Voice HP series and is geometrically optimized for performance from 1 250 Hz to 20 000 Hz Designed to survive the rigors of the road the FS 212 is constructed of 14 ply birch plywood and covered with black Ozite Super TNT carpeting the most rugged in the industry The FS 212 has a steel grille covered with black nylon cloth APPLICATIONS The FS 212 is ideal for use as a professional touring stage monitor where extremely high power and low distortion are required from a system housed in a compact low profile enclosure FREQUENCY RESPONSE The frequency response of the FS 212 shown in Figure 1 was measured on axis in the far held of an anechoic environment using a swept one third octave input and calculated to a one meter equivalent distance using the inverse square law The system was set up using an XEQ 3 crossover
8. t No 81147XX ARCHITECTS AND ENGINEERS SPECIFICATIONS The loudspeaker system shall be a two way biamped floor slant monitor system The loudspeaker system shall have two 12 inch low frequency direct radiating drivers each with an 8 ohm 2 5 inch diameter voice coil constructed of edge wound rectangular aluminum wire and which together shall be capable of handling a 600 watt shaped pink noise signal with a 6 dB crest factor for 8 hours as per EIA Standard RS 426A The loudspeaker system shall have a 2 Ounch exil compression driver mounted on a fiberglass high frequency horn The compression driver Benit CAER BEAMWIDTH IN DEGREES 6 dB LEVEL IN dB is Adjusted FIGURE 2 FS 212 Polar Response Va octave 4 volts at 20 feet FREQUENCY Hat FIGURE 3 Beamwidth vs Frequency FUNDANENTA a wipe an scum HIE TL LEITET LE TS SS CA TE T Ie AA CHA mC wi BAMIN ME MAANDI ME EN D M DELE T TY E af a z A E x 3 Ei ai FIGURE 5 FS 212 Harmonic Distortion 120 dB SPL 1 meter using typical music frequency spectrum NUMBERS INDSCATE SPECIFIC Ay VALUES DIRECTIVITY FACTOR Rg Q FREQUENCY IN HERTZ FIGURE 4 FS 212 Directivity Factor and Directivity Index vs Frequency e DIRECTIVITY INDEX D dB O ege ER 6 o amp XEQ 3 SETTINGS HF EQ MODULE R OPEN R OPEN R gt 83 1 kO CAP Ra 14 3 kO y Rs
9. with equalization and time delay set as in Figure 8 Drive level was set for one watt ot power 2 00 volts rms delivered to the midband of the woofer section DIRECTIVITY The polar response of the FS 212 speaker system at selected one third octave band widths is shown in Figure 2 These polar responses were measured in an anechoic environment at 20 leet using one third octave pink noise inputs and an XEQ 3 crossover equalizer and time delay set as in Figure 6 The frequencies selected are fully representative of the polar response of the system Beamwidth of the system utilizing the complete one third octave polar data is shown in Figure 3 R Q dnd directivity index D is plotted in Figure 4 DISTORTION Using the XEQ 3 crossover distortion for the FS 212 speaker system was measured in the far held with an input power that would result na sound pressure level of 120 dB at one meter using a tatored frequency spectrum typical of contemporary close miked rock music Plots ol second and third harmonic distortion are shown in Figure 5 POWER HANDLING To our knowledge Electro Voice was the first U S manufacturer to develop and publish a power test closely related to real life condi tons First we use a random noise input signal because it contains many frequencies simultaneously just hke real voice or instru ment program Second our signal contains more energy at extremely high and low Irequencies than typical actual program
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