Electro-Voice FS-212A User's Manual
Contents
1. 426 The loudspeaker system shall have a 2 0 inch exit compression driver mounted on a fiberglass high frequency horn The compression driver shall have a 3 0 inch diameter 0 0015 inch thick titanium dome and an 8 ohm 3 0 inch diameter voice coil constructed of edge wound rectangular aluminum wire and which shall be capable of handling a 50 watt 500 20 000 Hz pink noise signal with 6 dB crest factor for two hours as per AES2 1984 and ANSI 4 26 1984 standards The high frequency horn shall be of the constant directivity type and shall produce a horizontal beamwidth 6 dB down angle of 60 40 20 from 700 Hz to 20 000 Hz and a vertical beamwidth of 40 25 5 from 600 Hz to 20 000 Hz loudspeaker enclosure shall be constructed from 14 ply 3 s inch thick Finnish birch plywood shall be covered with black heavy duty carpeting and shall have a black nylon nylon cloth covered steel grille The loud speaker enclosure dimensions shall be 26 5 inches high 23 5 inches wide and 16 8 inches deep and shall weigh 120 pounds The loudspeaker system shall be the Electro Voice FS 212A ELECTRO VOICE UNIFORM LIMITED WARRANTY STATEMENT Electro Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified period as noted in the individual product line statement s below or in the individual product data sheet or owner s manual beginning with the date of2. SHOWN WITHOUT GRILLE SPECIFICATIONS Frequency Response Measured in Farfield 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 milliseconds LF HF 2 400 300 watts Maximum Long Term Average Midband Acoustic Output 72 watts Sound Pressure Level at One Meter Indicated Input Power 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 5 Directivity Factor R Q 600 20 000 Hz Median see Figure 4 15 9 14 9 9 4 Directivity Index D 600 20 000 Hz Median see Figure 4 12 0 dB 2 9 dB 3 9 dB Distortion 120 dB SPL at 1 Meter Shaped Spectrum see Figure 5 Second Harmonic 200 Hz 1 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 0 3 Transducer Comple
3. U Pr ru R OPEN jl R OPEN 25 Tse C R 1 em COI Sea R OPEN CO RHAI R 84 5 R 28 0 FIGURE 5 FS 212A Harmonic Distortion 120 dB SPL 1 meter using typical FIGURE 6 music frequency spectrum Crossover Set Up Designed to survive the rigors of the road the FS 212A is constructed of 14 ply birch plywood and covered with black Ozite Super TNT carpeting the most rugged in the industry The FS 212A has a steel grille covered with black nylon cloth APPLICATIONS The FS 212A 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 212A shown in Figure 1 was measured on axis in the far field 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 with equalization and time delay set as in Figure 8 Drive level was set for one watt of power 2 00 volts rms delivered to the midband of the woofer section DIRECTIVITY The polar response of the FS 212A speaker system at selected one third octave band widths is shown in Figure 2 These polar responses were measu ed anechoic environment at 20 feet using one third octave pink noise inputs and an XEQ 3 c
4. ment LF Two DL12X variant woofers HF DH1A Impedance Nominal LF HF 4 0 ohms 8 0 ohms Minimum LF HF 4 7 ohms 6 5 ohms Input Connections Neutrik Speakon NL4MPR Enclosure Materials Structural 14 birch plywood Finish Black Ozite Super TNT carpet Grille Steel with black nylon cloth covering Dimensions Height 67 3 cm 26 5 in Width 59 7 cm 23 5 in Depth 42 5 cm 16 8 in Net Weight 54 5 kg 120 Ib Shipping Weight 59 1 kg 130 Ib Electro Voice o MARK IV company FIGURE 1 Axial Frequency Response Using Recommended Crossovor Equalization and Time Delay 1 Watt 1 Moter into LF Section FS 212A Concert Floor Slant Monitor DESCRIPTION The Electro Voice FS 212A concert slant monitor was designed for high level concert sound stage monitoring applications The FS 212A is a two way biamped system with a high frequency horn and driver and two 12 inch woofers in an extremely compact enclosure The 12 inch woofers which operate over the range of 50 1 250 Hz make use of the Electro Voice DL technology that features the Thermo Inductive Ring TIR and PROTEF coating U S Patent No 4 547 632 The TIR is a non magnetic pole piece extension that acts as a control on drive inductance and more importantly provides a major heat transfer path from the top of the voice coil minimizing thermal power compression PROTEF is a Teflon based coating applied to the top plate that p
5. nt is as follows Pin 1 LF Pin 1 LF Pin 2 HF Pin 2 HF The low frequency input presents a 4 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 212A 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 compression driver failure a diaphragm assembly replacement kit with instructions is 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 returned for service The following replacement parts are available from the Electro Voice service department in Buchanan Michigan LF complete woofer EV Part No 812 1372 HF diaphragm kit EV Part 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 5
6. oice shall not be liable for any incidental or consequential damages including without limitation injury to persons or property or loss of use Some states do not a MARK IV company allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply 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 Systems 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 improperly designed enclosures Electro Voice active electronics associated with the speaker systems 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 Specifications subject to change without notice ELECTRO VOICE INC 600 Cecil Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT BUCHANAN Ml NEWPORT TN SEVIERVILLE TN E OKLAHOMA CITY OK GANANOQUE ONT Electro Voice Inc 1992 Litho U S A Part Number 531340 241
7. original purchase If such malfunction occurs during the specified period the product will be repaired or replaced at our option without charge The product will be returned to the customer prepaid Exclusions and Limite tions The Limited 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 resulting from misuse or abuse of the product e malfunction occurring at any time after repairs have been made to the product by anyone other than Electro Voice or any of its authorized service representatives Obtaining Warranty Service To obtain warranty service a customer 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 and or Electro Voice West at 8234 Doe Avenue Visalia CA 93291 209 651 7777 Incidental and Consequen Damages Excluded Product repair or replacement and return to the customer are the only remedies provided to the customer Electro V
8. rossover equalizer and time delay set as in Figure 6 The frequencies selected are fully representa tive 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 and directivity index D is plotted in Figure 4 DISTORTION Using the XEQ 3 crossover distortion for the FS 212A speaker system was measured in the far field with an input power that would result in a sound pressure level of 120 dB at one meter using a tailored frequency spectrum typical of contemporary close miked rock music Plots of 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 tions First we use a random noise input signal because it contains many frequencies 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 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 reliabili
9. rotects the voice coil during violent power peaks For high frequencies the FS 212A utilizes DH1A 2 inch throat compression driver Its unique one piece geometrically optimized titanium dome and suspension combined with its unusually powerful magnetic motor provide maximum efficiency and precise control of the diaphragm motion A high temperature voice coil design and PROTEF coated front plate assure excellent reliability with high power operation 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 U S Patent No 4 685 532 and is geometrically optimized for performance from 1 250 Hz to 20 000 Hz 3 A Wee 172 2 VERTICAL lt Level Adjusted FIGURE 2 FS 212A Polar Response 1 3 octave 4 volts at 20 feet Sahib SRCE ha VALUES gt DIRECTIVITY INDEX D dB o D 7 DIRECTIVITY FACTOR Q 2 2285 ry 2 7 aN 4 Hasile AEN LET LTT y w 9 lt a tT TT 1190101207 0 12017 Pe i FREQUENCY IN HERTZ FIGURE 4 FS 212A Directivity Factor and Directivity Index vs Frequency LEVEL IN dB 1 XEQ 3 SETTINGS CICA CAC CT TAN PATE TN HF EQ MODULE C
10. s instantaneous peaks at 6 dB above the continuous power or 300 watts peak 49 0 volts true rms CROSSOVER EQUALIZATION AND TIME DELAY Recommended for use with the FS 212A is the XEQ 3 electronic crossover The XEQ 3 is a combination crossover equalizer time delay unit which provides the circuitry necessary for optimum performance of the FS 212A When used with the FS 212A 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 is constructed as shown in Figure 6 using the blank module supplied with the XEQ 3 CONNECTIONS The FS 212A is equipped with Neutrik Speakon NL4MPR connectors for electrical connection to the woofers and compression driver Two connectors are installed for paralleling additional FS 212A loudspeakers The mating connectors on the cable ends should be the Neutrik Speakon NL4FC Neutrik Speakon connectors cables and wiring accessories are available from Pro Co Sound Ine and Whirlwind Music Distributors Inc To find your local Pro Co Whirlwind or Neutrik dealer contact Pro Co Sound Inc 135 E Kalamazoo Ave Kalamazoo 49007 Whirlwind Music Distributors Inc P O Box 1075 Rochester NY 14603 Neutrik USA Inc 195 S3 Lehigh Ave Lakewood NJ 08701 The pin out arrangeme
11. ty 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 at 600 watts into EIA equivalent imped ance 45 5 volts true rms Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 2 400 watts peak 91 0 volts peak Specifically the high frequency 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 the output of a pink noise generator pink noise is a particular type of 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 at 75 watts into the nominal impedance 24 5 volts true rms Amplifier clipping set
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