Electro-Voice RE45N User manual

Description
The Model RE45N/D is a highly directional
microphone utilizing a combination of char-
acteristics of cardioid and distributed front
opening designs. The microphone incorpo-
rates a revolutionary neodymium alloy mag-
net to provide high sensitivity and low
weight. The exceptional sensitivity of the
RE45N/D combined with the inherent low
noise of a dynamic transducer insures a high
signal-to-noiserationecessaryforthoselong
reach applications. The transducer and inte-
gral high pass filtering have been designed
to reduce most low frequency handling
noises found in handheld applications.
The cardioid action gives the microphone
uniform characteristics for frequencies up to
1,500 Hz. For frequencies above 1,500 Hz
thedistributedfrontopeningstakeeffectpro-
vidingnarrowerdirectionalcharacteristicsas
illustrated in the polar pattern, Figure 3. Ex-
tra care has been taken in adjusting the di-
rectional pattern of this microphone to pro-
vide smooth off-axis frequency response.
Olderdesignwave-interferencemicrophones
often have large peaks and dips in the off-
axisresponse.Theirregularoff-axisresponse
of the older designs can create problems as
therejection varies widely as themicrophone
ismoved only slightly due to thelobingof the
polar pattern. The smooth RE45N/D polar
pattern makes the aiming of the microphone
at the desired sound source less critical than
thoseolderdesign shotgunmicrophoneswhile
still providing better directivity than that of
conventional unidirectional microphones.
Benefits derived from this new design in-
clude wide range response, smooth polar
response, high sensitivity and high directiv-
ity. These features make possible a working
distance which is two to three times that of
conventional directional microphones. The
RE45N/D has been especially designed
for handheld use and includes a switch-
able 250-Hz high-pass filter to further re-
duce wind and handling noise. The remov-
able Warm-GripTM handle is designed to fit
over the microphone connector and the short
handle of the rnicrophone.
Applications Notes
The RE45N/D is shipped with a windscreen.
If the microphone is to be used outdoors it is
recommended that the supplied windscreen
be used. This windscreen comes with a self-
adhesive ring for attaching to the RE45N/D
microphone for better shielding. The wind-
screen will only have to be removed for oc-
casional cleaning or special mounting appli-
cations.
The RE45N/D may also be used with the
supplied model 323 stand clamp for fixed
applications such as podiums. Here the
higher directivity will reduce the chance of
feedback and the shape of the low frequency
response prevents boominess. The tube and
handle, less the Warm-GripTM fit in most
standard 3/4-inch stand clamps such as
Electro-Voice model 312. Without the
windscreen, the RE45N/D can be used with
the model 307 shock mount. For more se-
cure permanent mounting the 310 clamp fits
over the handle portion of the RE45N/D.
Architects’ and Engineers’ Specifications
Themicrophoneshallbeahighlydirectional
dynamic type with a combination cardioid
and distributed front opening principles and
with a frequency response from 150 to
15,000 Hz. From the sides, above 2,000 Hz,
the microphone shall exceed cancellation of
10 dB.
Sensitivity shall be 5 mV/Pascal or greater.
Thetransducer shall employ a hum-buck coil
with a resulting – 130 dBm at 60 Hz in a 1 m
Oe field.
The diaphragm shall be nonmetallic
Acoustalloy and shall have a shield to pre-
RE45N/D
Cardiline N/DYM®
Dynamic Shotgun
Microphone
• Highly directional above 1500 Hz
• High sensitivity–5mV/Pn
• 250 Hz high pass filter
• Cardoid polar pattern below 1500 Hz
• Complete with windscreen and
warm-grip™

RE45N/D Cardiline N/DYM® Dynamic Shotgun Microphone
RE45N/D Cardiline N/DYM
®
Dynamic Shotgun Microphone
2
vent dust and iron particles from reaching the
diaphragm. Impedance shall be 600 ohms.
Line shall be balanced to ground and
phased.
The output level shall be – 50 dB with
0 dB=1mW/Pascal. The magnet circuit
shall be a nonwelded circuit and employ a
neodymium alloy magnet.
Case parts shall be made of aluminum, steel
and high performance engineering plastics.
The microphone shall be a maximum length
of 11.50 in. (292 mm) with a maximum di-
ameter of 1.87 in. (48 mm) without wind-
screen and without cable. Finish shall be
black, non-reflecting. The microphone shall
have a built-in cable connector similar or
equivalent to the Switchcraft A3M, which
will mate with the connector similar or
equivalent to the Switchcraft A3F. The
Electro-Voice Model RE45N/D is speci-
fied.
Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s)below, or in the individual prod-
uct data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe-
riod, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid. Ex-
clusions and Limitations: The Limited
Warranty does not apply to: (a) exterior fin-
ish or appearance; (b) certain specific items
described in the individual product-line
statement(s)below, or in the individual prod-
uct data sheet or owner’s manual; (c) mal-
function resulting from use or operation of
theproduct otherthan asspecified intheprod-
uctdatasheet orowner’smanual;(d)malfunc-
tion resulting from misuse or abuse of the
product; or (e) malfunction occurring at any
timeafter repairs havebeen made totheprod-
uct by anyone other than Telex Communi-
cations, Inc. Service or any of its authorized
service representatives. Obtaining War-
ranty Service: To obtain warranty service,
acustomer must deliver the product, prepaid,
to Telex Communications, Inc. Service or
any of its authorized service representatives
together with proof of purchase of the prod-
uct in the form of a bill of sale or receipted
invoice. A list of authorized service repre-
sentatives is available from Telex Commu-
nications, Inc. Service at 600 Cecil Street,
Buchanan,MI 49107 (800/234-6831 or FAX
616/695-4743). Incidental and Conse-
quential Damages Excluded: Product re-
pair or replacement and return to the cus-
tomer are the only remedies provided to the
customer. Electro-Voice shall not be liable
for any incidental or consequential damages
including, without limitation, injury to per-
sons or property or loss of use. Some states
do not allow the exclusion or limitation of
incidental or consequential damages so the
above limitation or exclusion may not apply
to you. Other Rights: This warranty gives
you specific legal rights, and you may also
have other rights which vary from state to
state.
Electro-Voice Wired Microphones are
guaranteed against malfunction from any
causefor two (2) years from the date of origi-
nal purchase. In addition, the Limited War-
ranty for the acoustic system contained in
these microphones shall apply for the life
of the product, defined as a period of ten
(10) years from the date that the manu-
facture of the specific microphone has been
discontinued. Any and all active electronics
incorporated in these microphones are guar-
anteed against malfunction due to defects in
materials or workmanship for a period of
three (3) years from the date of original pur-
chase. The Limited Warranty does not ex-
tendtocables,cableconnectors,orswitches.
Additional details are included in the Uni-
form Limited Warranty statement.
For warranty repair or service informa-
tion, contact the service repair department
at: 616/695-6831 or 800/685-2606.
Fortechnical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Stan-
dard Time.
Specifications subject to change without
notice.
Figure 1—Frequency Response

RE45N/D Cardiline N/DYM
®
Dynamic Shotgun Microphone
RE45N/D Cardiline N/DYM®Dynamic Shotgun Microphone
3
Figure 2—Dimensions
HORIZONTAL
VERTICAL
5 dB per division
Figure 3—Polar Response
Figure 4—Off-Axis Frequency Response

RE45N/D Cardiline N/DYM® Dynamic Shotgun Microphone
RE45N/D Cardiline N/DYM
®
Dynamic Shotgun Microphone
4
MICROPHONES—Dynamics Part Number 531082 — 9810
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©Telex Communications, Inc. 1998 • Litho in U.S.A.
Specifications
Generating Element:
Dynamic
Frequency Response:
150 to 15,000 Hz (Far)
50 to 15,000 Hz (Close)
(See Figure 1)
Polar Pattern:
Cardioid-line
(See Figure 3)
Impedance:
600 ohms (nominal)
Output Level:
5 mV/Pascal at 1,000 Hz
Sensitivity:
-50 d B at 1,000 Hz
(0 dB =1mW/Pascal)
Hum Pickup Level:
-130 dBm typical at 60 Hz
in a 1 m Oe field
Magnetic Circuit:
N/DYMT®magnet in a non-welded
circuit
Case Material:
Aluminum, steel and high perfor-
mance engineering plastics
Dimensions:
292 mm (11.50 in.) long
48 mm (1.87 in.) diameter
Finish:
Black, non-reflecting
Net Weight:
212 g. (7.5 oz.)
Microphone Connector:
A3M
Accessories Included:
Warm-GripTM handle
323 stand clamp
Zippered vinyl carrying case
Windscreen
Optional Accessories:
307A shock mount
312 microphone clamp
Figure 5—Wiring Diagram