User Guide for SHURE models including: BETA 181 Ultra Compact Side Address Microphone, BETA 181, Ultra Compact Side Address Microphone, Compact Side Address Microphone, Side Address Microphone, Address Microphone, Microphone
Mikrofon Shure BETA 181
Microphone Shure BETA 181
File Info : application/pdf, 10 Pages, 562.50KB
DocumentDocumentBETA181 Ultra-Compact Side-Address Microphone Online user guide for Shure BETA181 side-address condenser microphone. Version: 3.1 (2023-I) Table of Contents BETA181 Ultra-Compact Side-Address Microphone 3 General Description 3 Features 3 Variations 3 Performance Characteristics 3 Applications 3 Positioning the Microphone 3 General Rules for Use 4 Applications and Placement 4 Avoiding Pickup of Unwanted Sound Sources 4 Changing Capsules Load Impedance Power Requirements Specifications Accessories Furnished Accessories Optional Accessories Certifications Shure Incorporated 5 6 6 6 9 9 10 10 2/10 Shure Incorporated BETA181 Ultra-Compact Side-Address Microphone General Description The Shure Beta 181 is an ultra-compact, side-address, condenser microphone, designed for discreet placement in live and studio environments. Featuring interchangeable cardioid, supercardioid, omnidirectional and bidirectional capsules for superior versatility, the small diaphragm of the Beta 181 provides superior audio with consistent, "textbook" polar responses in a form factor small enough to get close to the source in the tightest conditions. Features · Premier live performance microphone with Shure quality, ruggedness, and reliability · Compact preamp attaches to four interchangeable capsules · Wide dynamic range for use in high SPL environments · Side-address form allows for discreet positioning in tight performance and recording settings · Innovative locking ring provides a secure connection between capsule and preamp · Hardened steel mesh grille resists denting, wear, and abuse · Compact design, under 12 cm (5 in.), reduces stage clutter · Furnished with stand adapter and carrying case Variations · Beta 181/C Cardioid Microphone · Beta 181/S Supercardioid Microphone · Beta 181/O Omnidirectional Microphone · Beta 181/BI Bidirectional Microphone Performance Characteristics · Exceptional low-frequency reproduction · Extremely high SPL handling · High output level · No crossover distortion · Transformer output Applications Positioning the Microphone The front of the microphone is marked by the Shure logo. Position this side toward the sound source. 3/10 Shure Incorporated General Rules for Use · Do not cover any part of the microphone grille with your hand, as this will adversely affect microphone performance. · Aim the microphone toward the desired sound source (such as the talker, singer, or instrument) and away from unwanted sources. · Place the microphone as close as practical to the desired sound source. · Work close to the microphone for extra bass response. · Use only one microphone to pick up a single sound source. · For better gain before feedback, use fewer microphones. · Keep the distance between microphones at least three times the distance from each microphone to its source ("three to one rule"). · Place microphones as far as possible from reflective surfaces. · Add a windscreen when using the microphone outdoors. · Avoid excessive handling to minimize pickup of mechanical noise and vibration. Applications and Placement The following table lists the most common applications and placement techniques. Keep in mind that microphone technique is largely a matter of personal taste; there is no one "correct" microphone position. Cardioid Supercardioid Omnidirectional Bidirectional Drum overheads Piano Acoustic instruments Pair with a Beta 181/BI for M/S stereo technique Close-miking in performance settings Snare drum Acoustic instruments Room and ambient pickup Mono drum overhead String ensembles Use a pair of Beta 181/BI for Blumlein stereo technique Mono drum overhead Dual sound sources, such as between tom-toms or acoustic instruments As with all bidirectional microphones, sounds picked up from the back will be out of polarity with the source. Those from the front are in polarity with the source. Avoiding Pickup of Unwanted Sound Sources Directional microphones are most sensitive to sounds arriving on axis and reject at angles depending upon the polar pattern. The following chart shows the rejection angles of each microphone. In live performance or recording settings, align monitors, P.A. loudspeakers, and unwanted sound sources at these angles. To minimize feedback and ensure optimum rejection of unwanted sound, always test microphone placement before a performance. 4/10 Cardioid Supercardioid Bidirectional Shure Incorporated Off-axis null points at 180 degrees Off-axis null points at 120 degrees Off-axis null points at 90 degrees Changing Capsules Follow these steps to change Beta 181 capsules: 1. Turn off phantom power and disconnect from equipment. 2. Unscrew the capsule's knurled ring to detach the preamp. 3. Slide the alignment key on the bottom of the capsule into the groove on the preamp to ensure that the Shure logo dis- plays the front of the microphone. 4. Tighten the knurled ring to securely reconnect the microphone. NOTE: Before each use, make sure the capsule is tightly secured on the microphone, as vibration and accidental hits with drumsticks may loosen it, resulting in signal loss. 5/10 Shure Incorporated Load Impedance Maximum SPL capability, output clipping level, and dynamic range vary with the input load impedance of the preamplifier to which you connect the microphone. Shure recommends a minimum input load impedance of 1000 . Most modern microphone preamplifiers meet this requirement. Higher impedance results in better performance for these specifications. Power Requirements This microphone requires phantom power and performs best with a 48 Vdc supply (IEC-61938). However, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 Vdc. Most modern mixers provide phantom power. You must use a balanced microphone cable: XLR-to-XLR. Specifications Type Electret Condenser Polar Pattern 181/C: 181/S: 181/O: 181/BI: Frequency Response 20 to 20,000 Hz Output Impedance 110 Sensitivity open circuit voltage, @ 1 kHz, typical Cardioid Supercardioid Omnidirectional Bidirectional Maximum SPL 1 kHz at 1% THD[2] 2500 load Cardioid Supercardioid Omnidirectional Bidirectional 46.5 dBV/Pa[1] (4.7 mV) 49.5 dBV/Pa[1] (3.4 mV) 52.0 dBV/Pa[1] (2.5 mV) 51.0 dBV/Pa[1] (2.8 mV) Cardioid 151.5 dB SPL 6/10 Shure Incorporated 1000 load Signal-to-Noise Ratio[3] Cardioid Supercardioid Omnidirectional Bidirectional Dynamic Range 2500 load 1000 load Clipping Level @ 1 kHz, 1% THD 2500 load 1000 load Self Noise equivalent SPL, A-weighted, typical Cardioid Supercardioid Omnidirectional Bidirectional Supercardioid Omnidirectional Bidirectional Cardioid Supercardioid Omnidirectional Bidirectional Cardioid Supercardioid Omnidirectional Bidirectional Cardioid Supercardioid Omnidirectional Bidirectional 154.5 dB SPL 157.0 dB SPL 156.0 dB SPL 149.0 dB SPL 152.0 dB SPL 154.0 dB SPL 153.5 dB SPL 73.5 dB 71.5 dB 70.5 dB 71.0 dB 131.0 dB 132.0 dB 133.5 dB 133.0 dB 128.5 dB 129.5 dB 130.5 dB 130.5 dB 10.5 dBV 7.5 dBV 20.5 dB SPL-A 22.5 dB SPL-A 23.5 dB SPL-A 23.0 dB SPL-A 7/10 Shure Incorporated Common Mode Rejection 20 to 20,000 kHz 55 dB Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 Power Requirements 1152 V DC[4] phantom power (IEC-61938) 2.4 mA, maximum Weight 145 g (5.1 oz.) [1] 1 Pa=94 dB SPL [2]THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL [3]S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted [4]All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity. Overall Dimensions Beta 181/C 8/10 Shure Incorporated Beta 181/S Beta 181/O Beta 181/BI Accessories Furnished Accessories Microphone Clip for AMS26, BETA181, KSM137, KSM141, MX412, MX418, MX412S, MX418S, MX412SE, MX418SE, SM62, SM63, SM63L, SM63LB, SM81, VP64, VP64A, VP64AL and standard microphone stands A57F Foam case assembly for BETA181 A181C Foam Windscreen for BETA181 A181WS 9/10 Shure Incorporated Optional Accessories BETA181 Cardioid Capsule RPM181/C BETA181 Supercardioid Capsule RPM181/S BETA181 Bidirectional Capsule RPM181/BI BETA181 Omnidirectional Capsule RPM181/O BETA181 Preamplifier RPM181/PRE Universal Microphone Mount with Large and Small Clip Adapters and Universal Threaded Adapter Post A75M Isolation Mount/Swivel Adapter for KSM109, KSM137, KSM141, SM63, SM81, SM94 and VP64 A53M 25 foot (7.5m) Triple-Flex® Microphone XLR Cable with Switchcraft connectors C25E Certifications CE Notice Hereby, Shure Incorporated declares that this product with CE Marking has been determined to be in compliance with European Union requirements. The full text of the EU declaration of conformity is available at the following site: https://www.shure.com/en-EU/support/declarations-of-conformity. UKCA Notice Hereby, Shure Incorporated declares that this product with UKCA Marking has been determined to be in compliance with UKCA requirements. The full text of the UK declaration of conformity is available at the following site: https://www.shure.com/en-GB/support/declarations-of-conformity. 10/10