Audio-Technica AT895 User's Manual
Contents
1. Inc 1221 Commerce Drive Stow Ohio 44224 Except to the extent precluded by applicable state law A T U S will have no liability for any consequential incidental or special damages any warranty of merchantability or fitness for particular purpose expires when this warranty expires This warranty gives you specific legal rights and you may have other rights which vary from state to state Outside the U S A please contact your local dealer for warranty details audio technica Audio Technica U S Inc 1221 Commerce Drive Stow Ohio 44224 330 686 2600 www audio technica com Audio Technica Limited Old Lane Leeds LS11 8AG England 0113 277 1441 P51171 B W 1999 Audio Technica U S Inc Printed in U S A2. Pack When it is fully seated the two release buttons at the bottom of the Battery Housing will click into place To remove the Battery Housing simultaneously push both release buttons while sliding it down and off the Control Pack The Battery Housing may be in place when external power is used The batteries will still be consumed but at a slower rate depending upon the external voltage The batteries will also provide back up power in case of external supply interruption For correct balance of the microphone and proper orientation of the elements the microphone should be mounted in the AT895PG with the Audio Technica logos visible between the rubber rings along the left and right sides In use the rubber rings should be positioned behind the Pistol grip above the user s forearm If the Zeppelin is to be used the mic must be installed in it before mounting the mic in the Pistol grip Specifications System Components and Accessories Elements 5 Fixed charge back plate permanently polarized condenser Pickup Pattern Modes Full field adaptive Planar adaptive Line Gradient Frequency Response 60 12 000 Hz High pass Filter 80 Hz 18 dB octave Low end Roll off Band pass Filter 300 5 500 Hz 6 dB octave Open Circuit Sensitivity 23 dBV 70 mV at 1 Pa 1kHz Output Impedance 450 ohms Maximum Input Sound Level 117 dB SPL 1 kHz at 1 T H D 24 dB 93 dB 1 kHz
3. ATJ Adaptive array Microphone systems See DELTA BEAM New Technology Enhances Audio Acquisition Unique groundbreaking optimization of acoustic analog and digital design produces unmatched directional performance operating versatility and ease of use AT895 MK Mount Kit AT895 RK Remote Kit Installation and Operation audio technica AT895 Adaptive array Microphone Systems Installation and Operation Warning Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e I
4. at Max SPL Noise Typical A weighted Dynamic Range Typical Signal To Noise Ratio 70 dB 1 kHz at 1 Pa 120 mW max at 1 kHz 1 into 20 ohm each channel stereo headphones 1 4 TRS signal on both Tip and Ring Monitor Headphone Output T H D Typical Monitor Headphone Jack External Power Requirement 9 15V DC 250 mA typical Battery Requirement Three 9V NEDA type 1604 AT895BH not included Battery Life Typical Alkaline 4 6 hours AT895BH Lithium 10 12 hours Weight AT895 Microphone 16 7 oz 473 g less cable AT895CP Control Pack 10 0 oz 284 g AT895BH Battery Holder 7 6 oz 215 9 with typical batteries AT895PG Pistol Grip 10 0 oz 284 g AT895Z Zeppelin 5 0 oz 142 g Windscreen Dimensions AT895 Microphone 14 00 355 6 mm long 2 75 69 9 mm max diameter 1 18 30 0 mm handle diameter AT895CP Control Pack 6 105 7 mm long 4 84 8 mm wide 8 3 24 9 mm high 104 9 mm long 28 83 3 mm wide 27 32 3 mm high AT895BH Battery Holder Output Connector Control Pack Integral 3 pin XLRM type Cable 6 conductor shielded cable with XLR7F type connectors AT895 RK 10 3 0 m long AT895 MK 25 7 6 m long t In the interest of standards development A T U S offers full details on its test methods to other industry professionals on request 1 Pascal 10 dynes cm 10 microbars 94 dB SPL 1 Typical A weighted using A
5. ejection at 90 270 Shotgun 15 dB AT895 70 dB 1 kHz 2 kHz 4 kHz 8 kHz 60 50 30 20 20 20 60 50 Compare maximum off axis rejection Microphone Maximum Off axis Rejection Shotgun 30 dB AT895 80 dB t Compared to typical performance of a professional quality 15 5 line gradient microphone measurement conditions 1Pa at 0 5 m Due to the adaptive nature of its digital processing AT895 performance in actual field conditions will vary with the environment encountered Incorporated in the AT895 design are DSDA PRO software U S Patent No 5 825 898 by Lamar Signal Processing Ltd a wholly owned subsidiary of Andrea Electronics Corporation DeltaBeam U S Patent pending and MicroLine technologies by Audio Technica DSDA PRO is a trademark of Lamar Signal Processing Ltd DeltaBeam is a trademark of and MicroLine is a registered trademark of Audio Technica The Basic System Model No AT895 at Top audio technicae Fig A AT895 Microphone AT895 Microphone The AT895 Microphone itself is all analog housing one Audio Technica MicroLine element four A T cardioid elements mounted in a co planar diamond configuration and five mic preamps The five amplified analog signals from the microphone elements are sent individually down a special detachable cable to the AT895CP Control Pack AT895CP Control Pack The AT895CP Control Pack provide
6. ettings Model No AT895 at Top audio technicae Fig D AT895 Microphone Elements The microphone array in the AT895 consists of one Audio Technica MicroLine element and four A T cardioid elements mounted in a co planar diamond configuration A switch on the AT895CP Control Pack selects from three Mode pickup pattern options two adaptive modes and one non adaptive mode In the adaptive modes signals from the MicroLine element and either one pair labeled 1 amp 2 in Fig D or both pairs 1 amp 2 3 amp 4 of the corrective cardioid elements are utilized These signals are processed in the Control Pack by both analog and digital means to provide continuously adapting rejection of off axis sounds This means that as the off axis soundscape changes either in intensity or directionality the microphone system compensates for those changes Even off axis wind is interpreted as unwanted noise and is suppressed Full field adaptive Mode 0 The Full field adaptive mode provides the maximum directionality and off axis rejection Signals from the MicroLine element and both pairs of cardioid elements are utilized Planar adaptive Mode In the Planar adaptive mode signals from the MicroLine element and only the vertical pair of cardioid elements 1 amp 2 are utilized The resultant elliptical pickup pattern provides optimum rejection in one plane tighter verticall
7. it adds the components needed for an AT895 MK system to function as an AT895 RK system Includes AT895BH Battery Housing AT895PG Pistol grip shock mount AT895Z Zeppelin type windscreen AT895CC Carrying Case AT895C 10 special 10 3 m cable Fisher Boom Kit AT895FBK Fisher Boom Kit adapts the AT895 for use with a Fisher boom Includes mounting brack et adapter and special 30 9 1 m cloth covered cable Carrying Case AT895CC All weather protective carrying case with pressure equalization vent custom fitted to hold all AT895 RK System components One Year Limited Warranty Audio Technica brand products purchased in the U S A are warranted for one year from date of purchase by Audio Technica U S Inc AT U S to be free of defects in materials and workmanship In event of such defect product will be repaired promptly without charge or at our option replaced with a new product of equal or superior value if delivered to AT US or an Authorized Service Center prepaid together with the sales slip or other proof of purchase date Prior approval from A T U S is required for return This warranty excludes defects due to normal wear abuse shipping damage or failure to use product in accordance with instructions This warranty is void in the event of unauthorized repair or modification or removal or defacing of the product labeling For return approval and shipping information contact the Service Dept Audio Technica U S
8. ncrease the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Introduction Thank you for choosing an AT895 Adaptive array Microphone System AT895 Systems incorporate a revolutionary DSP controlled five element microphone array that provides adaptive directional audio acquisition Utilizing Audio Technica s proprietary DeltaBeam technology the AT895 System manipulates and filters the output of the array by acoustical analog and digital means This process enhances the pickup of a sound source from a desired direction relative to unwanted background noise or interference providing cancellation of up to 80 dB Other benefits include minimized audibility of proximity effect minimized nearfield effect on the low frequency directionality of the array and markedly reduced susceptibility to mechanical noise wind noise and racking as compared to currently available professional microphones The AT895 functions equally well for handheld interview use or long range sound pickup in the field in the studio or in security operations AT895 vs Typical Shotgun Performancet Compare acceptance angles at 3 dB down Microphone 200 Hz 400 Hz Shotgun 60 60 AT895 20 20 Compare polar patterns at 200 Hz Microphone 200 Hz R
9. rrying Case AT895 MK Mount Kit includes e AT895MIC Adaptive array Microphone e AT895CP Control Pack e AT895SC Shock mount Stand Clamp with 5 s 27 threaded stud e AT895PS1 Multi input AC Power Supply with 120V IEC detachable power cord e AT895C 25 Special 6 conductor shielded Cable 25 long All components and accessories are interchangeable and available separately to augment systems or to use as field spares In addition two accessory kits are available e AT895CK Conversion Kit adds the components needed for an AT895 MK system to function as an AT895 RK system e AT895FBK Fisher Boom Kit permits use of the AT895 on a Fisher boom See page 7 for a complete listing of available system components and accessories The AT895 Microphone and Control Pack are designed to operate as a system only Do not attempt to use these components with other devices AT895CP Controls and Functions AT895CP Control Pack BATTERY D audio technicae rr ns T o MONITOR MONITOR LEVEL DELTABEAM MODE With DSDA PRO Software By Lamar Signal Processing Ltd Fig B Control Pack Front Panel Front Panel Controls and Functions Fig B 1 MONITOR 1 4 6 3 mm Monitor headphone jack TRS type with signal on both Tip and Ring MONITOR LEVEL Monitor headphone level control FILTER SWITCH 3 position switch offers Flat High pas
10. s 7 and Band pass settings MODE PICKUP PATTERN SWITCH 3 position switch offers Full field Adaptive o Planar adaptive and Line Gradient O settings See page 5 for a full explanation of the Mode settings LCD BATTERY CONDITION INDICATOR Markers disappear as power remaining decreases Functions only during 9V battery operation using the AT895BH POWER LED INDICATOR Lights red when power is on POWER SWITCH On off switch controls DC power from all sources Fig C Control Pack Rear Panel Rear Panel Functions Fig C 8 BALANCED AUDIO OUTPUT JACK 3 pin XLRM type 10 connector Output is analog the balanced signal appears across Pins 2 and 3 Output phase is Pin 2 hot positive acoustic pressure produces positive voltage at Pin 2 Pin 1 is ground shield A standard 2 conductor shielded cable not included can be used to connect the AT895CP output to the associated electronics Phantom power cannot be used but if present will have no effect on the Control Pack DC POWER INPUT 4 pin XLRM type connector for an external 12 14V DC source from an Anton Bauer or similar battery supply or from an AC adapter Wiring is industry standard V on Pin 1 V on Pin 4 no connection to Pins 2 or 3 MIC INPUT JACK 7 pin XLRM type connector accepts the special AT895C 6 conductor shielded cable used to connect the AT895 Microphone to the Control Pack Mode Pickup Pattern S
11. s all the power Digital Signal Processing and control for the AT895 Output from the Control Pack is analog at mic level 23 dBV The lightweight sturdy metal housing accepts a quick change click on Battery Housing for totally self contained operation if desired The Control Pack also operates on external 12 14V DC from an Anton Bauer or similar type battery source or from an AC adapter via an industry standard 4 pin XLR type connection No ribs on Top and Bottom Li Ribs on Sides Control features on the AT895CP are e Three position Mode pickup pattern switch which provides Full field Adaptive o Planar adaptive and Line Gradient O settings See page 5 for a full explanation of the Mode settings e Audio filter switch with Flat High pass and Band pass settings e Monitor headphone jack with volume control e LCD battery condition indicator e Power switch with LED indicator Two System Configurations The AT895 is available as the AT895 RK Remote Kit for field use and as the AT895 MK Mount Kit for studio and fixed install applications AT895 RK Remote Kit includes e AT895MIC Adaptive array Microphone e AT895CP Control Pack with attached belt clip e AT895BH Click on Battery Housing e AT895PG Pistol grip shock mount e AT895Z Zeppelin type windscreen e AT895C 10 Special 6 conductor shielded Cable 10 long e AT895CC Ca
12. tery Housing included in the AT895 RK System for completely self contained operation AT895BH Battery Housing The two sections of the AT895Z Zeppelin type windscreen bayonet latch together To open the windscreen rotate the rear section to the left counter clockwise viewed from the rear then pull the sections apart Place the nose of the microphone in the foam recess provided in the front section Slide the rear section of the windscreen over the handle of the mic until it reaches the front section making certain the mic s nose remains in its foam recess Engage the bayonet lugs on the windscreen and rotate the rear section fully to the right clockwise Once installed the windscreen may be rotated on the microphone if desired AT895PG Pistol Grip Shock Mount Battery Selection and Installation Always use fresh alkaline or lithium 9V batteries For greatest reliability and longest operation replace all three batteries at the same time using identical types To open the battery tray press down firmly on the tray release button until it clicks then ift the tray slightly and slide it out Insert three batteries observing polarity as marked inside the battery compartment Slide the battery tray closed making certain it clicks shut Due to current requirements of the system always use three batteries Attaching the Battery Housing to the Control Pack Slide the Battery Housing onto the Control
13. udio Precision System One All AT895 components and accessories are interchangeable and available separately to augment systems or to be used as field spares Basic System Components AT895MIC AT895CP Adaptive array Microphone Control Pack with attached belt clip AT895 Microphone Accessories AT895PG Pistol grip shock mount 3 s 16 threaded metal insert in bottom of grip AT895SC Shock mount Stand Clamp with 5 s 27 threaded stud for mounting the AT895 on a microphone stand AT895Z Zeppelin type windscreen reduces on axis wind noise while protecting the microphone AT895CP Control Pack Accessories AT895BH Click on Battery Housing holds three 9V bat teries for self contained AT895 operation Switching Power Supply 90 263V AC input 47 63 Hz UL CSA TUV approved with detachable 120V 3 pin IEC power cord Output 9V DC regulated 1 54 max Attached output cable is 6 1 8 m long terminating in an XLR4F type connector Rack mount plate for mounting one or two AT895CP Control Packs in a 1U 19 rack space AT895PS1 AT895RP Cables AT895C xx Special 6 conductor shielded cable with XLR7F XLR7F connectors for use between the AT895 Microphone and AT895CP Control Pack Available in 1 5 0 4 m C 1 5 10 3 m C 10 25 7 6 m C 25 50 15 2 m C 50 and 100 30 4 m C 100 lengths Custom lengths are available on special order from the A T Service Department Conversion Kit AT895CK Conversion K
14. y wider horizontally MicroLine Understanding the correct orientation of the microphone is crucial for effective application of the Planar adaptive mode When the microphone is positioned with the Audio Technica logos along the sides of the mic handle and the AT895 on the name ring is up as shown above and in Fig A on page 3 maximum off axis rejection occurs in the vertical plane of the pickup pattern only while the horizontal pickup is non adaptive This produces a horizontal ellipse pickup pattern Of course if the microphone is rotated 90 degrees so the logos are at the top and bottom of the handle and the AT895 name ring marking is sideways the resulting pattern would be tall and adaptively narrow Line Gradient Mode O The Line Gradient mode is non adaptive with only the signal from the MicroLine element being utilized The cardioid elements and the adaptive circuitry are still functioning but the correcting signals are not applied to the MicroLine element s signal Power Sources AT895Z Zeppelin Type Windscreen The AT895CP Control Pack may be powered three different ways e From an AC adapter using an industry standard 4 pin XLR connection An AC power supply with 9V DC output is included in the AT895 MK System e From an Anton Bauer or similar type external 12 14V battery source e From three 9V batteries in a click on AT895BH Bat
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