Electro-Voice T221M User's Manual
Contents
1. g Figure 3 T221M Beamwidth T221M Biampable Compact Two Way Floor Monitor Speaker System Figure 4 T221M Directivity DIRECTIVITY INDEX 0 1 10 20 30 50 100 200 500 1000 2000 5000 10000 20000 40000 FREQUENCY Hz Figure 5 T221M distortion 10 40 W at 10 ft 120 tt vats A Aw 2nd Harmonic 3rd Harmonic _ See SHH 110 LEVEL IN dB SUEY LMT 70 60 50 40 20 30 50 100 200 500 FREQUENCY IN HERTZ Figure 5 T221M Dimensions 6 reyesds eTqeduetg WIZZL T221M Biampable Compact Two Way Floor Monitor Speaker System T221M Biampable Compact Two Way Floor Monitor Speaker System Specifications Frequency Response 1 Watt 1 Meter on Axis Swept Sine Wave Input Half Space Environment see Figure 2 100 16 000 Hz Low Frequency 3 dB Down Point 100 Hz Usable Low Frequency Limit 10 dB down point 70 Hz Half Space Reference Efficiency 5 7 Long Term Average Power Handling Capacity per EIA Standard RS 426A see Power Handling Capacity section Full Range 400 watts Low Frequency 400 watts High Frequency 60 watts Maximum Woofer Acoustic Output 22 8 watts Sound Pressure Level at 1 Meter 1 Watt Input Anechoic Environment Ban2. input 6 dB down horizontal coverage angle of 55 5 in the 5 000 to 16 000 Hz range 6 dB down vertical coverage angle of 80 5 in the 5 000 to 16 000 Hz range cross over frequency of 2 600 Hz electrical nominal impedance of 8 ohms and mini mum impedance of 6 7 ohms Input con nections shall be two paralleled Neutrik Speakon NL4MPR connectors for full range and biamp operation The enclosure shall be constructed of curved plywood covered with black textured paint and fit ted with a 16 gauge black steel grille rub ber feet and a recessed carrying handle Di mensions shall be 371 mm 14 62 in high x 594 mm 23 4 in wide x 406 mm 16 0 in deep Net weight shall be 22 3 kg 49 Ib The loudspeaker system shall be the Electro Voice T221M T221M Biampable Compact Two Way Floor Monitor Speaker System Warranty Limited Electro Voice products are guaranteed against malfunction due to defects in mate rials or workmanship for a specified period as noted in the individual product line statement s below or in the individual prod uct data sheet or owner s manual beginning with the date of original purchase If such malfunction occurs during the specified pe riod the product will be repaired or replaced at our option without charge The product will be returned to the customer prepaid Exclusions and Limitations The Limited Warranty does not apply to a exterior fin ish or appearance b certain
3. specific items described in the individual product line statement s below or in the individual prod uct data sheet or owner s manual c mal function 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 or malfunction occurring Figure 1 T221M Polars at any time after repairs have been made to the product by anyone other than Electro Voice or any of its authorized service repre sentatives Obtaining Warranty Service To obtain warranty service a customer must deliver the product prepaid to Electro Voice or any of its authorized service representa tives together with proof of purchase of the product in the form of a bill of sale or re ceipted 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 customer are the only remedies provided to the customer Electro Voice shall not be liable for any incidental or consequen tial damages including without limitation injury to persons or property or loss of use Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclu sion may not apply to you Other Rights
4. ElechtO 0iC C memm T221M Biampable Campact Two Way Floor Monitor Speaker System Constant directivity 80 x 55 hom High output 400 watt 12 inch woofer Bianpedor full range qperation inside the enclosure e Rock solid enclosure made with 12 ply curved plywood shell circuit provides HF driver poetim Professional Neutrik Speakor connectors for bianp or full range Description The Electro Voice T221M is a 400 watt two way high efficiency floor monitor system It combines professional quality components highlighted by the DH2T compression driver and 400 watt high output 12 inch woofer The system may be biamplified or used full range with the internal passive crossover Either way the result is clear and articulate high quality sound The enclosure is constructed of a void free 3 4 in 12 ply curved plywood shell which is extremely rigid The baffle and end pieces are made from 13 ply birch plywood This high strength enclosure is sprayed with a resilient textured black finish for a truly pro fessional appearance The end mounted heavy duty recessed handle makes trans portation easy and three rubber feet on the opposite end help keep the finish looking new The high frequency section of the T221M utilizes a compact 80 x 55 constant direc tivity horn driven by a wide bandwidth two inch titanium diaphragm driver The voice coil is coupled to the di
5. HORIZONTAL VERTICAL 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 origi nal 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 pur chase 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 5 dB per division 180 1 25 kHz we sks reyeseds Aem omy WIZZI T221M Biampable Compact Two Way Floor Monitor Speaker System SS ORIONA 5 dB per division VERTICAL Figure 2 T221M axial frequency 110 response 1 watt 1 meter we ysAs rexyesds WIZZL 20 30 50 100 200 500 1K 2K FREQUENCY IN HERTZ N E 8
6. Whenever possible a crossover with 24 dB per octave slopes should be used Note The PRO circuit is still protecting the high frequency driver when the system is in biamp mode Connections The T221M is equipped with Neutrik Speakon NL4MPR connectors Two con nectors are installed in parallel one mounted on each end of the enclosure allowing multiple T221M s to be used and daisy chained together These NL4FC connectors are used because they are locking self po larizing and capable of 30 amps rms con tinuously Full range pin arrangements are 1 FULL RANGE 1 IN FULL 2 Not used 2 Not used Biamp pin arrangements are 1 LOW FREQUENCY 1 IN LOW FREQUENCY 2 IN HIGH FREQUENCY 2 IN HIGH FREQUENCY If you experience any difficulty in obtain ing cables connectors or wiring accessories the following companies can be contacted Neutrik USA Inc 1600 Malone Street Millville NJ 08332 Pro Co Sound Inc 135 E Kalamazoo Avenue Kalamazoo MI 49007 Whirlwind Music Distributors Inc P O Box 1075 Rochester NY 14603 Power Handling Capacity To our knowledge Electro Voice was the first U S manufacturer to develop and pub lish a power test closely related to real life conditions First we use a random noise in put signal because it contains many frequen cies simultaneously just like real voice or instrument program Second our s
7. aphragm with EV s exclusive Resonant Drive technology This increases and smooths the high frequency response and reduces the amount of internal equalization required for flat frequency re sponse EV s self resetting PRO circuit is built into the crossover network to guard the compres sion driver from damage If input power to the driver exceeds the nominal rating the PRO circuit is activated reducing the power delivered to the driver by 6 dB The system will remain in this mode of opera tion until input power is reduced to a safe level The optimally vented bass section of the T221M is designed using Thiele Small pa rameters for efficient performance to below 100 Hz The high output 12 inch woofer delivers outstanding performance It features beryllium copper lead wires with a low mass edge wound voice coil and high temperature materials The coil is driven by a massive 15 lb magnetic structure Frequency Response The combination of a 12 inch woofer DH2T wide bandwidth high frequency driver and an equalized crossover results in the wide and smooth overall response shown in Figure 2 221 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 4 volts Figure 2 has been averaged and corrected for 1 watt 1 meter half space operation Directivity The polar response of the T221M speaker system at selected one th
8. d Limited Pink Noise Signal 300 3 000 Hz 101 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Indicated One Third Octave Bands of Pink Noise 5 000 16 000 Hz Horizontal see Figure 3 55 45 5 000 16 000 Hz Vertical see Figure 3 80 5 Directivity Factor R Q 800 to 16 000 Hz Median see Figure 4 9 7 5 1 5 2 Directivity Index D 800 to 16 000 Hz Median see Figure 4 9 5 dB 2 dB 1 5 dB Distortion 0 1 Full Power Input Second Harmonic 100 Hz 2 6 1 000 Hz 1 0 10 000 Hz 7 9 Third Harmonic 100 Hz 1 8 1 000 Hz 2 8 10 000 Hz 1 4 Transducer Complement High Frequency DH2T driver HP85M horn Low Frequency High power woofer 12 in Box Tuning Frequency 70 Hz Crossover Frequency electrical 2 600 Hz Crossover Slope 12 dB per octave low frequency 18 dB per octave high frequency Impedance Nominal 8 ohms Minimum 6 7 ohms Input Connections Two paralleled Neutrik Speakon NL4MPR connectors for full range or biamp operation Enclosure Materials and Colors Black texture painted 12 and 13 ply plywood Dimensions overall in floor monitor position Height 371 mm 14 62 in Width 594 mm 23 4 in Depth 406 mm 16 0 in Net Weight 22 3 kg 49 Ib Shipping Weight 25 5 kg 56 Ib SPEAKERS Monitors ElectroVoice 600 Cecil Street Buchanan MI 49107 616 695 6831 616 695 1304 Fax Audio 1997 Litho
9. his shaped signal is sent to the power amplifier with the continuous power set at 400 watts into the 5 98 ohm equivalent impedance 48 9 volts true rms Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 1 600 watts peak 97 8 volts peak This procedure provides a rigorous test of both thermal and mechani cal failure modes Architects and Engineers Specifications The loudspeaker system shall be a two way full range design consisting of a 305 mm 12 inch woofer in a vented enclosure a high frequency compression driver mounted 80 x 55 constant directivity horn and a passive crossover equalizer network which may be bypassed for use with an external low level active dividing network with a corner frequency of 1 600 Hz The loud speaker shall meet the following perfor mance criteria frequency response of 100 16 000 Hz 3 dB full range power handling of 400 watts long term and 1 600 watts short term with a shaped random noise input per EIA Standard RS 426A low fre quency power handling below 1 600 Hz in the biamp mode of 400 watts long term and 1 600 watts short term with a shaped ran dom noise input per EIA Standard RS 426A high frequency power handling above 1 600 Hz in the biamp mode of 60 watts long term and 240 watts short term with a shaped random noise input per EIA Standard RS 426A sensitivity of 101 dB SPL at 1 meter with a 1 watt 300 to 3 000 Hz pink noise
10. ignal con tains more energy at extremely high and low frequencies than typical actual program add ing 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 ac tual program The long term average level stresses the speaker thermally heat The instantaneous peaks test mechanical reliabil ity cone and diaphragm excursion Note that the sine wave test signals sometimes used have a much less demanding 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 T221M is designed to with stand the power test described in EIA Stan dard RS 426A The EIA test spectrum is applied for eight hours To obtain the spec trum 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 oc tave 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 T
11. in U S A Part Number 534035 9728
12. ird octave band widths is shown in Figure 1 These polar responses were measured in an anechoic environment at 20 feet using one third oc tave pink noise inputs The frequencies selected are fully representative of the polar response of the system Beamwidth of the system utilizing the complete one third oc tave polar data is shown in Figure 1 R and directivity index D are plotted in Figure 4 Biamping The T221M may be easily converted for biamp operation To do this first carefully remove the crossover Notice the instruc tions on the circuit board and the four wire Molex connector The T221M comes from the factory in passive full range mode To convert the T221M to biamp operation un plug the Molex connector from the header marked PASSIVE MODE FULL RANGE and plug it into the header labeled T221M Biampable Compact Two Way Floor Monitor Speaker System T221M Biampable Compact Two Way Floor Monitor Speaker System The crossover is now in biamp mode Carefully replace the crossover and screws When the crossover is in biamp mode there is an 18 microfarad capacitor in series with the high frequency driver for protection against DC voltages or amplifier failure This is not a crossover It is how ever protection against some forms of am plifier failure An active crossover with a crossover frequency of 1 600 Hz 1 6 kHz with slopes of 12 dB per octave or greater is required
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