Astatic 905R User manual

905R
Line-cardioid Condenser Mini-gooseneck Microphone
Description
The Astatic 905R is a line-cardioid, quick-mount, miniature-
gooseneck condenser microphone designed for speech and vocal
pick-up. The line-cardioid polar pattern (LocusTM technology)
is engineered to attenuate unwanted sources outside of the
+/- 45 degree acceptance angle while effectively “zeroing-in”
on the desired speaker. Astatic’s LocusTM technology provides a
signicant improvement over other line-cardioid microphones
due to diaphragm size and low-noise electronics.
The 905R is appropriate for applications such as boardrooms,
courtrooms, house of worship and anywhere a gooseneck
microphone with optimal distance pick-up is needed. LocusTM
technology allows the installer to use the 905R in place of
longer miniature-gooseneck microphones without sacricing
performance. It is the perfect solution for the user who prefers
not to be distracted by an obtrusive transducer.
The 905R is a commercial-grade microphone featuring an
all-metal body. The 8mm steel memory-ex gooseneck
and ultra-quiet movement provide for worry-free, life-long
microphone operation. Special attention has been taken to
design the 905R with improved RF immunity to greatly reduce
susceptibility to radio interference from GSM based cell phones,
PDA/cell phones with walkie-talkie capability and other similar
devices.
Features
• Line-cardioid polar pattern
• RF (radio frequency) resistant architecture
• 8mm ex pipe with strong positioning memory
and silent operation
• Quick-mount format
• Balanced, transformerless output circuitry
• Non-reective matte-black nish
• Included XLR-F type locking ange mount
• Included windscreen
1. Mark the center of the mounting location. Be sure to check
the underside of the surface for obstructions.
2. Using a 7/8" hole saw or drill bit, cut the centered hole
for the cable and bottom of the mount to pass through
the surface.
3. Fit the mount into the hole so that the ange sits at on
the surface. Mark the three mounting holes around the ange.
4. Remove the mount from the hole and pre-drill the marked
mounting holes for screws appropriate for the installation.
5. Make all nal audio connections to the XLR connector.
6. Mount the FM-2A to the surface.
FM-2A Locking Flange Mount Installation

Architects’ and Engineers’ Specications
The microphone will be a mini-gooseneck condenser
type. The frequency response will be 70Hz-18KHz. The
microphone will have a line-cardioid polar pattern utilizing
Astatic’s exclusive LocusTM technology.
The sensitivity of the microphone will be –30dBV (32mV)
@ 1 Pa. The microphone will have a professional 3-pin male
XLR connector that also contains the electronic circuitry.
The microphone will operate from P12, P24 or P48 standard
phantom power consuming 2mA.
The microphone element and electronics will be enclosed
in a radio frequency resistant housing meeting or exceeding
specication EN55103-2. The microphone will be 1/2" [13.0mm]
in diameter at the capsule and 3/4" [19.0mm] in diameter
at the base. The exible gooseneck will be 5/16" [8.0mm]
in diameter. The overall length will be 10 -15/16" [278.5mm].
The microphone will have a durable matte-black urethane
nish. A locking-ange mount and foam windscreen will be
supplied as accessories.
The microphone will be RoHS compliant.
The Astatic model 905R is specied.
905R
Line-cardioid Condenser Mini-gooseneck Microphone
Two-Year Limited Warranty
Astatic Commercial Audio Products hereby warrants that this product will be free of defects
in material and workmanship for a period of two years from the date of purchase. In the
unlikely event that a defect occurs Astatic will, at its option, either repair or replace with a
new unit of equal or greater value. Retain proof of purchase to validate the purchase date
and return it with any warranty claim.
This warranty excludes exterior nish or appearance, damage from abuse, misuse of the
product, use contrary to Astatic’s instructions or unauthorized repair. All implied warranties,
merchantability, or tness for a particular purpose is hereby disclaimed and Astatic hereby
disclaims liability for incidental, special or consequential damages resulting from the use or
unavailability of this product.
This warranty gives you specic legal rights and you may have other rights that vary from
state to state. Some states do not allow the exclusion or limitation of incidental or consequential
damages or limitations on how long an implied warranty lasts, so the above exclusions and
limitations may not apply to you.
Note: No other warranty, written or oral is authorized by Astatic Commercial Audio Products.
If outside the United States, contact your local dealer or distributor for warranty details.
©2008 Astatic Commercial Audio Products
Part No. 46873-89-00 Apr2008
Specications†
Operating Principle............................................ Condenser
Polar Pattern..................................................... Line-cardioid
Frequency Response ....................................... 70Hz -18KHz
Sensitivity .........................................-30dBV (32mV) @ 1 Pa
Impedance............................................................ 300 ohms
Maximum SPL.................................126dB, 1% T.H.D., 1KHz
Self Noise ...................................................................18dBA
Power Requirements............................P12, P24, P48, 2mA
Connector............................................. 3-pin male XLR type
Polarity................................ Positive pressure on diaphragm
corresponds to positive voltage
on pin 2 relative to pin 3.
Finish ......................................Durable matte-black urethane
Dimensions .....................................................(See drawing)
Net Weight [Mass] ......................................... 4.3oz [0.12Kg]
Packaged Weight [Mass] ...............................8.0oz [0.23Kg]
RF Immunity......................... Meets or exceeds EN55103-2,
E1, E2, E3 and E4
RoHS Compliant
†Specications subject to change without notice.
Frequency Response
Polar Pattern
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