Shure KSM44 Microphone Microphone
Contents
1. 2 3 456789 2 3 456789 1000 0000 20000 Hz FIGURE 5 TYPICAL FREQUENCY RESPONSE rs ma SR 2500 10000 5000 15000 FIGURE 6 TYPICAL POLAR PATTERNS BIDIRECTIONAL RESPONSE GRAPHS 10 60 cm 2 3 456789 2 3 456789 20 50 100 H 1000 0000 20000 z FIGURE 7 TYPICAL FREQUENCY RESPONSE 180 150 2500 10000 5000 15000 FIGURE 8 TYPICAL POLAR PATTERNS CERTIFICATION Tested to comply with FCC standards For home or office use This product complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Changes or modifications not expressly approved by Shure Incorporated could void your authority to operate this equipment Eligible to bear CE Marking Conforms to European EMC directive 89 336 EEC Meets applicable tests and performance criteria found in European Professional Audio Products EMC Standard EN 55103 1996 Part 1 emissions and part 2 immunity The KSM44 is intended for use in environments E1 residential and E2 Light Industrial as defined in European s2. Selecting a Polar Pattern The three position switch on the front of the KSM44 sets the polar response pattern of the microphone The sensitivity of the microphone to sounds coming from different angles varies according to this switch s setting IPE l b Zo lt cr KSM44 FRONT KSM44 BACK Low frequency response switch Polar pattern switch 15 dB attenuator FIGURE 1 KSM44 Front and Back OO Cardioid Picks up sounds directly in front of the microphone and is least sensitive to those in back Cardioid is the most commonly used pattern in studio recording and live sound applications See Figure 4 O Omnidirectional Picks up sound equally from all directions This pattern is best for picking up room ambience and miking several sources at once such as singers or an ensemble Omnidirectional patterns do not exhibit proximity effect See Figure 6 6 Bidirectional Picks up equally from the front and back of the microphone while rejecting sounds from the sides Bidirectional is often used in microphone configurations for stereo recording such as mid side and Blumlein techniques See Figure 8 Note As with all bidirectional microphones sounds picked up from the front will be in polarity with the source and those picked up from the back will be out of polarity with the source Selecting Low Frequency Response A three position switch on the back of the KSM44 allows you to adjust the low
3. Ensembles choral or orchestral Room ambience pick up guitar amplifier or drums Both the acoustic environment and microphone placement strongly affect the sound obtained from miking a source especially with a high resolution microphone like the KSM44 You may need to experiment with microphone placement room treatments and polar pattern to achieve the best overall sound for each application OPERATION Mounting Use either the ShureLock swivel mount or the elastic shock mount to secure the KSM44 to a floor or boom stand When using the swivel mount the internal shock mount provides good isolation from vibration For even greater reduction of noise from external vibrations use the elastic shock mount Important When using the swivel mount or elastic shock mount be sure that the threaded knurled locking grip is screwed securely onto the threads at the base of the microphone Do not overtighten Power The KSM44 requires phantom power and performs optimally with a 48 Vdc supply IEC 268 15 DIN 45 596 However it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 Vdc Positioning the Microphone The front of the KSM44 is marked by the SHURE logo and the polar pattern selection switch See Figure 1 Position this side of the microphone toward the sound source to be recorded The rear of the microphone is marked by the logo the low frequency filter switch and the 15dB attenuation switch
4. Inc 1250 Peterson Drive Wheeling Illinois 60090 U S A at the test sites 1 and 2 of D L S Electronic Systems Inc 166 South Center Genoa City Wisconsin 53128 U S A Shure Inc Manufacturer Signed Date June 16 2000 Name Title Craig Kozokar Senior Quality Engineer 1JS115ug SHURE INCORPORATED KSM44 MULTIPLE POLAR PATTERN CONDENSER MICROPHONE Thank you for selecting the KSM44 Over 75 years of audio experience has contributed to making the KSM44 one of the finest microphones available If you have any questions not answered in this booklet please contact Shure Applications Engineering at 847 866 2525 Monday through Friday from 8 00 am to 4 30 pm CST In Europe call 49 7131 72140 Our web address is www shure com GENERAL DESCRIPTION The Shure KSM44 is a side address condenser microphone with multiple polar patterns cardioid omnidirectional bidirectional Designed for studio use the KSM44 has externally biased dual 1 inch diaphragms extremely low self noise and an extended frequency response specially tailored for vocal tracking and instrument recording rs ma hy FEATURES Multiple polar patterns cardioid omnidirectional and bidirectional for maxi mum flexibility in a wide variety of recording applications Dual 1 inch externally biased ultra thin 2 5 um 24 Karat gold layered low mass Mylar diaphragms provide superior transient response e Class A d
5. Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3 Dimensions and 55 9 mm 2 20 in maximum body diameter ia mm 7 37 in long Weight 490 5 grams 17 30 oz Directional polar Cardioid Omnidirectional Bidirectional Patterns See Figure 4 See Figure 6 See Figure 8 Sensitivity typical at 1000 Hz 31 dBV Pa 37 dBV Pa 36 dBV Pa 1 Pa 94 dB SPL Self noise typical equivalent SPL 10 dB 10 dB A weighted IEC 651 Maximum SPL 2500 Q load 132 149 d 138 151 137 150 d Attenuator on 1000 Q load 127 144 dB 132 145 dB 131 144 d English Output Clipping Level 2500 Q load 1000 Q load Dynamic Range 2500 Q load 1000 Q load 20 Hz to 20 kHz THD lt 1 THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified SPL CARDIOID RESPONSE GRAPHS 8 IPE l 0 60 cm 10 2 3 456789 2 3 456789 20 50 100 H 1000 0000 20000 z FIGURE 3 TYPICAL FREQUENCY RESPONSE 180 A 30 5dB 30 3 oN 45 ae 390 125 500 2500 10000 250 1000 5000 aa 15000 FIGURE 4 TYPICAL POLAR PATTERNS OMNIDIRECTIONAL RESPONSE GRAPHS 10 15 cm 60 cm 10 20 50 100
6. Trademark Notices The circular S logo the stylized Shure logo and the word Shure are registered trademarks of Shure Incorporated in the United States ShureLock is a trademark of Shure Incorporated in the United States Mylar is a registered trademark of E I duPont de Nemours and Company in the United States These marks may be registered in other jurisdictions SHURE SHURE Incorporated Web Address http www shure com 222 Hartrey Avenue Evanston IL 60202 3696 U S A Phone 847 866 2200 Fax 847 866 2279 In Europe Phone 49 7131 72140 Fax 49 7131 721414 In Asia Phone 852 2839 4290 Fax 852 2839 4055 Elsewhere Phone 847 866 2200 Fax 847 866 2585 2001 Shure Incorporated C 27A3122 AC Printed in U S A SHURE KSM44 User Guide OO Declaration of Conformity We of Shure Incorporated 222 Hartrey Ave Evanston IL 60202 3696 U S A 847 866 2200 declare under our sole responsibility that the following product KSM44 Multiple Polar Pattern Condenser Microphone was tested and found to comply with Part 15 of the FCC rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Testing was completed by the following NVLAP or A2LA accredited laboratory D L S Electronic Systems
7. frequency response of the microphone as shown in Figure 2 The low frequency filter settings can be used to reduce wind noise room noise or proximity effect Flat response Use this setting when you desire the most natural reproduction of the source Since the microphone will reproduce ultra low frequencies the ShureLock elastic suspension shock mount may be required to reduce low frequency mechanical vibrations transmitted through the microphone stand 5 _ Z Low frequency cutoff m F t r Provides an 18 dB per octave cutoff at 80 Hz Helps eliminate stage rumble or ae Te low frequency room noise from heating ventilation or cooling HVAC i 2 3 456789 systems It may also be used to 20 Wo ens 1000 compensate for proximity effect or to Flat Response reduce low frequencies that make an Low Frequency Cutoff Low Frequency Rolloff instrument sound dull or muddy Figure 2 Low Frequency Responses lt Low frequency rolloff Provides a 6dB per octave rolloff filter at 115Hz Use this setting with vocals or instruments to compensate for proximity effect or to reduce low frequencies that could make an instrument sound dull or muddy Setting Attenuation The attenuation switch on the back of the KSM44 reduces the signal level from the cartridge by 15 dB without altering the frequency response This can prevent extremely high SPLs from o
8. iscrete transformerless preamplifier for transparency extremely fast transient response and no crossover distortion Minimizes harmonic and intermodulation distortions Premium electronic components and gold plated internal and external con nectors e Subsonic filter eliminates rumble from mechanical vibration below 17 Hz Switchable 15 dB pad for handling extremely high sound pressure levels SPLs 3 position switchable low frequency filter helps reduce unwanted back ground noise or counteract proximity effect Integrated three stage pop protection grille reduces plosives and other breath noise Internal shock mount reduces handling and stand noise PERFORMANCE CHARACTERISTICS Extended frequency response Ultra low self noise Exceptional low frequency reproduction High output level e High input SPL capability No crossover distortion Extremely uniform polar response Superior common mode rejection and suppression of radio frequency inter ference APPLICATIONS The KSM44 provides superior results in any application requiring a high quality microphone Some typical applications are listed below e Voice solo background voice over or broadcasting e Acoustic instruments such as piano guitar drums percussion strings e Wind instruments brass and woodwind Low frequency instruments such as double bass electric bass kick drum e Overhead miking drums or percussion e
9. tandard EN 55103 EMC conformance is based on the use of shielded interconnecting cable 108 FC FURNISHED ACCESSORIES ShureLock Champagne Elastic Shock Mount A44SM ShureLock Champagne Swivel Adapter A44M Aluminum Carrying Case 4 A44SC Protective Velveteen Pouch A44VB OPTIONAL ACCESSORIES Windscreen lu T suqus eae ulus ie oe teeter etal A32WS Padded Zippered Carrying Bag A32ZB REPLACEMENT PARTS Suspension Shock Mount Elastic Cord Champagne contains one 95B2125 SERVICE For additional microphone service or parts information please contact Shure s Service department at 1 800 516 2525 Outside the United States please contact your Authorized Shure Service Center 1JS115ug
10. verloading the microphone To activate attenuation move the switch to the 15 dB position Note In situations where the high output of the KSM44 might overload the microphone preamplifier of a console or mixer use an attenuation pad in the mixer Integral Pop Filter The KSM44 has an integral pop filter which helps reduce wind and breath noise An external pop protection screen or windscreen may be necessary when close miking vocalists The low frequency cutoff filter may also be effective Load Impedance A load impedance of at least 1000 Q is recommended When used with typical modern microphone preamplifiers rated at about 2500 Q the KSM44 provides higher maximum SPL capability and output clipping level With the 15 dB pad engaged the KSM44 can handle up to 156 dB SPL and output 15 dBV into a 5500 Q or greater load 1JS115ug SPECIFICATIONS Cartridge Type Type Externally biased condenser biased condenser a Response a S to 20 000 Hz See Figures 3 5 7 Output Impedance 150 Q actual Attenuation Switch 0 or 15 dB attenuation Low Frequency Flat 6 dB octave below 115 Hz 18 dB octave below 80 Hz Response Switch Phantom Power Power 48 Vdc 4 48 Vdo 4 Vde IEC 268 15 DIN 45 596 positive pins 2and3 4 Vdc IEC 268 15 DIN 45 596 48 Vdo 4 Vde IEC 268 15 DIN 45 596 positive pins 2and3 pins 2 and 3 5 4 mA typical at 48 Vdc Common Mode gt 50 dB 20 Hz to 20 kHz Rejection Polarity
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