Shure BG 1.0 User's Manual
Contents
1. Impedance 150 Q rated Output Level at 1 000 Hz Open Circuit Voltage 76 0 dB 158 mV OdB 1 Wubar Phasing Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the microphone out put connector Environmental Conditions This microphone will operate over a temperature range of 29 to 57 C 20 to 135 F and at relative humidity of 0 to 95 Connector 3 pin professional audio connector XLR designed to mate with Cannon XL series Switchcraft A3 Q G series or equivalent Case Black painted die casting Dimensions See Figure 7 179 mm ad 7 416 IN be 21mm 4 27 32 IN F f t 50 mm 1 31 32 IN ae r XJ OVERALL DIMENSIONS FIGURE 7 Net Weight 309 g 10 9 oz FURNISHED ACCESSORIES Swivel Adaptor ioir aa 6 3 s0 ce es vee eas A25C Carrying Storage Bag less foam insert 26A16 OPTIONAL ACCESSORIES Shock Stopper Isolation Mount A53HM Windsoreen 24 0 3 be age aloes eed AS8WS Series Cable 7 6m 25 fi 22 es 5 ven cs tee ava ys C25J REPLACEMENT PARTS Screen and Grille Assembly 9OHK2600 Cartridge Assembly 99A915 Plug Element 90A1984 SHURE SHURE BROTHERS INCORPORATED 222 Hartrey Avenue Evanston IL 60202 3696 U S A2. SHURE bETA CREEN leodymium m 3 1 0 Dynamic vocal mic Cardioid pattern Built in shock mount Neodymium magnet for ndenser instrument mic or phantom power for high output extra high output Dynamic vocal mic Dyn ding mic or phantom ailored frequency Low or High impedance ioid p Cardioid pattern Improved shock Low impex Beta Green MODEL BG 2 0 UNIDIRECTIONAL DYNAMIC MICROPHONE The Shure BG 2 0 microphone represents the latest in microphone technology utilizing an advanced dynamic transducer design The BG 2 0 offers the high perfor mance and rugged construction that you need for de manding applications such as live music sound reinforce ment and home studio recording The BG 2 0 takes advantage of the latest neodymium magnet technology This provides the high output needed to add punch and excitement to your performance Like all BetaGreen vocal mics the BG 2 0 has a specially shaped frequency response to keep your voice sounding smooth and clear Features e Rugged dynamic type cartridge with neodymium magnet for high output e Cardioid pickup pattern reduces feedback and pickup of unwanted noise e Specially shaped frequency response for clear and natural voice reproduction e Internal shock mount for reduced pickup of handling noise and stand vibration e Sturdy open mesh grille with built in wind and pop fil ter e On Off switch for convenient contro of audio signal by performer Copyright 1992 Shure Brothers In
3. c 27A2653 LD Low impeda e Padded Nylon carrying case and unbreakable swivel adapter included Basic Microphone Technique Good microphone technique will add to your effective ness as a performer Keep the following points in mind when using your Shure BetaGreen Microphone 1 The distance from the performer or instrument to the microphone has a significant effect on the sound For increased bass response get close to the micro phone within 6 inches or less The closer the micro phone is to the sound source the more the bass re sponse will be increased DISTANCE FROM MICROPHONE AFFECTS PERFORMANCE FIGURE 1 Printed in U S A 2 Beneficial changes in the level and character of sound coming from the loudspeakers can be achieved by changing your distance from the microphone For instance working up close can provide maximum bass enhancement without feedback Practice and experience will develop your skill in varying your dis tance to achieve the desired effects 3 For maximum isolation from other sound sources and background noise position the microphone as close to the source as practical and aimed at the sound source Feedback and Directional Microphones A performer s worst enemy in using a microphone is feedback This is a harsh howl or squeal that occurs when the microphone picks up sound from the loudspeakers teamplifies and reproduces it over and over again see Figure 2 This vicious circle res
4. nes and Proximity Effect Because of their usefulness in reducing the likelihood of feedback directional microphones are best in sound re inforcement and public address When directional microphones are used close to a vo calist or musical instrument there is an increase in bass low frequency output called proximity effect Typical in creases due to proximity are shown in Figure 5 Proximity effect can be used to improve your sound 1 With vocalists it increases bass response giving a fuller more powerful quality to the voice Proximity ef fect can be especially effective during soft passages where extra emphasis is needed 2 With instruments it allows the user to change bass output without tone controls simply by changing the distance between source and microphone In addi tion close miking improves acoustical isolation by minimizing pickup of other instruments See Figure 5 for an illustration of proximity effect at varying dis tances The cardicid directional characteristics of your micro phone are provided by means of rear sound entry ports that cancel sounds originating from the sides and back of the microphone It is therefore important that these ports not be covered at any time When holding the microphone do not allow your hand to partially cover the grille see Fig ure 4 DO NOT COVER THE GRILLE WITH YOUR HAND FIGURE 4 Most Shure directional microphones are designed to provide satistactory respo
5. nse at low frequencies yet still allow proximity effect to be used advantageously when desired To learn how to use proximity effect you need to hear the amplified result Use monitor speakers or head phones and just as you practice your instrument practice your microphone technique to get the precise sound you want OPTIONAL WINDSCREEN If you notice excessive popping of p s and b s when the microphone is used closeup a helpful accessory is the Shure A85WS windscreen in addition to the filter built in to the ball grille The windscreen will also minimize pickup of wind noise when the microphone is used outdoors SHOCK MOUNTING Your Shure BetaGreen microphone features a care fully engineered shock mount to minimize transmission of mechanical noise To reduce noise pickup when the mi crophone is handheld take care to avoid unnecessarily handling it To further reduce mechanical noise when the microphone is used on a stand use a shock mounted stand adapter such as the Shure A5SHM Also be sure to locate the stand on a solid flat surface SPECIFICATIONS Type Dynamic Frequency Response 70 to 13 000 Hz see Figure 5 RELATIVE RESPONSE IN dB FREQUENCY IN Hz TYPICAL FREQUENCY RESPONSE FIGURE 5 Polar Pattern Cardioid directional symmetrical about axis see Figure 6 TYPICAL POLAR PATTERNS FIGURE 6 Output
6. ults in feedback MIC WITH CARDIOIO POLAR PATTERN SHADED ORIENTED TOWARQ LOUDSPEAKERS RESULTS J IN FEEDBACK EO AMPLIFIER FEEDBACK LOOP FIGURE 2 A directional microphone with a cardioid pickup pat tern aids in preventing feedback because it rejects sound that originates from the sides and rear see Figure 3 Sound pickup from the sides is reduced by about one halt and pickup from the rear is reduced by about nine tenths You can hear this reduction in pickup by speaking into the microphone as you rotate it from front to back lf you use your directional microphone close to the performer or instrument you will ensure that the direct sound will be much louder than the feedback producing amplified sound Because less amplifier gain is required to achieve the desired overall loudness the amplified sound will likely remain below the volume that triggers feedback MIC WITH CARDIOID POLAR PATTERN SHADED ORIENTED AWAY FROM LOUDSPEAKERS REDUCES FEEDBACK AMPLIFIER CARDIOID MICROPHONE MINIMIZES POSSIBILITY OF FEEDBACK FIGURE 3 Other hints in preventing feedback are keep the loud speakers as far to the sides as possible be sure that the microphones point toward the performers and away from the loudspeakers and make certain that any stage moni tor speakers are positioned in front of the performers and face the insensitive rear of the microphone Directional Micropho
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