Electro-Voice RE38N User manual

Description
The Electro-Voice Model RE38N/D is a pro-
fessional quality dynamic cardioid micro-
phone designed especially for recording,
broadcast and sound reinforcement applica-
tions requiring smooth tailorable response
over a wide frequency range. The extended
high frequency response and the 16-position
equalization switch give the RE38N/D great
flexibilityinobtainingtheappropriatesound
for any situation. For those applications that
require a deeper sound, the microphone has
bass-boosting “proximity effect” when used
up close. The amount of this "proximity ef-
fect" can be reduced by adjusting the equal-
ization switch as shown on the frequency
responsecurves.The“brightness”ofthehigh
frequency response is also adjustable with
the equalization switch.
The RE38N/D incorporates a revolutionary
neodymium alloy magnet to provide high
sensitivity. Combined with the inherent low
noise of a dynamic transducer, the high sen-
sitivity ensures a superior signal-to-noise
ratio ready for digital recording and sam-
pling. To further reduce noise, the micro-
phone uses a humbucking coil to attenu-
ate from lighting and other sources. The
RE38N/D utilizes DynaDampTM, an ad-
vanced vibration-isolation material, so that
a large external shockmount is not required
for studio use. DynaDamp™ is a unique
foamed elastomer, specially formulated for
vibration control.
The dynamic element of the RE38N/D pro-
videsreliableoperation in humidity and tem-
perature extremes. An Acoustifoam™ pop
filter reduces both wind noise and “P-pop”
breath sounds. The microphone features a
rugged machined aluminum case and
Memraflex™ grille screen designed to with-
stand all the rigors of professional use.
To solve the problem of microphone place-
ment the RE38N/D features a pivoting yoke
configuration. With the unique pivoting
yoke, the microphone can be easily adjusted
toposition the front toward the sound source.
Theyokepositionsaredetentedtoassurethe
microphone doesn’t shift during usage. This
adjustment option in combination with the
stand adapter provides a highly flexible
mounting system.
The cardioid polar pattern of the RE38N/D
provides excellent isolation at all frequen-
cies. The directional control is smooth in
transition from front to back to keep off-axis
coloration to a minimum.
Using the Equalization Adjustments
The graphic pictorials on the RE38N/D
nameplate provide an approximation of the
16 possible far-field (distant) frequency re-
sponses which may be selected. This flex-
ibility allows the user to obtain a desired
sound character in almost any situation right
at the microphone. There are eight low fre-
quency tailoring combinations and two high
frequency combinations to yield a total of
16 possible frequency responses built into
the RE38N/D. With these options, the user
cancompensate for proximity effect, lowfre-
quency noise and sibilance to get that “right
sound.” The control is easy to adjust with a
small screwdriver (provided) yet cannot be
accidentally changed during use.
Experimentation is encouraged with the
equalization positions to get the perform-
ance best for your application. To aid in de-
termining the frequency response which is
right for your application, the typical re-
sponses for the positions are shown in Fig-
ures 1 through 16.
Switch position 1 yields the flattest fre-
quency response of all the positions to give
a clean, uncolored representation of the in-
put sound for signals in the far field. The far
RE38N/D
Dynamic Cardioid
Microphone
• Exclusive 16 position equalization
switch
• Flexible mechanical design for
optimum positioning
• Large diaphragm for extended
frequency response
• High N/DYM®sensitivity

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
2
field response shown is the output when the
sound source is at least 24 inches from the
microphone grille. The low frequency re-
sponse increases due to “proximity effect”
when the sound source is less than 24 inches
from the microphone. This low frequency
response will continue to increase as the
sound source moves closer to the micro-
phone. The amount of “proximity effect” in
the output of the microphone can be con-
trolled by placing the microphone at differ-
entdistancesfromthesoundsourceandwith
the equalization choices provided in the
RE38N/D. Positions 9 through 16 have the
same low frequency shape as the respective
positions 1 through 8, the difference being
that high end response is “bright” in posi-
tions 9 through 16.
Architects’ and Engineers’
Specifications
The microphone shall be a dynamic cardioid
typewith a wide uniform frequency response
from 70 to 20,000 Hz. The microphone shall
have bass-boosting “proximity effect” when
used up close and an easy to adjust equali-
zation switch permitting the selection of 16
different frequency response adjustments.
The open circuit voltage sensitivity shall be
2.5 mV/Pascal at 1000 Hz and the power
level sensitivity shall be -53 dB at 1000 Hz
where 0 dB equals 1 mW/Pascal. The mag-
netic circuit shall be a nonwelded circuit and
employ a neodymium alloy magnet. The
transducer shall employ a hum-buck coil
with a resulting hum sensitivity of -135 dBm
at 60 Hz in a 1 millioersted field and a shield
topreventdustandiron particles from reach-
ing the diaphragm. Rated impedance shall
be 150 ohms. Line shall be balanced to
ground and phased. Pin 2 shall have a posi-
tivevoltage with reference to Pin3with posi-
tive pressure on the diaphragm.
The microphone shall be supplied with a
Memraflex™ grille screen, pop filter and an
exceptional shock isolation system using
DynaDampTM, an advanced foam elastomer
formulated for vibration control.
Response at any angular position away from
the major axis shall be essentially similar to
the response on the major axis, except at-
tenuated uniformly at all frequencies by an
amount appropriate to that angular position.
Polarcharacteristicsshall be sufficientlyuni-
form in all planes so that it is, effectively, a
cardioid of revolution.
Case material shall be aluminum and steel.
The microphone shall have a unique pivot-
ing yoke, detented to hold a set position, and
a stand adapter, to provide a highly flexible
mounting system.The microphoneshall have
amaximum heightof 122mm(4.8 in.),length
of 89 mm (3.5 in.), width of 109 mm (4.3 in.)
and a net weight of 380 grams (13.4 oz). The
finish shall be a non-reflecting satin nickel.
The microphone shall have a built-in cable
connector insert similar or equivalent to a
Switchcraft QG3M. Accessories shall in-
clude an 81715 stand adapter, carrying case
and 3/32 inch screwdriver.
The Electro-Voice RE38N/D is specified.
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
the product other than as specified in the
product data sheet or owner’s manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made to
the product by anyone other than Telex Com-
munications, Inc. Service or any of its autho-
rized service representatives. Obtaining
Warranty Service: To obtain warranty ser-
vice, a customer must deliver the product,
prepaid, to Telex Communications, Inc. Ser-
vice or any of its authorized service repre-
sentatives together with proof of purchase
of the product in the form of a bill of sale or
receipted invoice. A list of authorized ser-
vice representatives is available from Telex
Communications, Inc. Service at 600 Cecil
Street, Buchanan, MI 49107 (800/234-6831
or FAX [phone]). Incidental and
Consequential Damages Excluded: Prod-
uct repair or replacement and return to the
customer are the only remedies provided to
the customer. Electro-Voice shall not be li-
ableforany incidental or consequential dam-
ages including, without limitation, injury to
persons or property or loss of use. Some
states do not allow the exclusion or limita-
tion 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
causefortwo (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 manufacture of
the specific microphone has been discontin-
ued. Any and all active electronics incorpo-
rated in these microphones are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a period of three
(3) years from the date of original purchase.
The Limited Warranty does not extend to
cables, cable connectors, or switches. Addi-
tional details are included in the Uniform
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.

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
3
Figure 4—Switch Position 4
Figure 3—Switch Position 3
Figure 2—Switch Position 2
Figure 1—Switch Position 1

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
4
Figure 8—Switch Position 8
Figure 7—Switch Position 7
Figure 6—Switch Position 6
Figure 5—Switch Position 5

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
5
Figure 12—Switch Position 12
Figure 11—Switch Position 11
Figure 10—Switch Position 10
Figure 9—Switch Position 9

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
6
Figure 16—Switch Position 16
Figure 15—Switch Position 15
Figure 14—Switch Position 14
Figure 13—Switch Position 13

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
7
Figure 17—Polar Response at 250 Hz Figure 18—Polar Response at 1000 Hz
Figure 20—Polar Response at 5000 Hz
Figure 21—Dimensions
Figure 19—Polar Response at 2000 Hz
5 dB per division

RE38N/D Dynamic Cardioid Microphone
RE38N/D Dynamic Cardioid Microphone
8
MICROPHONES—Dynamics Part Number 531198 — 9810
600 Cecil Street, Buchanan, MI 49107
800/234-6831, 616/695-6831, 616/695-1304 Fax
©EVI Audio 1998 • Litho in U.S.A.
Specifications
Generating Element:
Dynamic
Frequency Response:
70 to 20,000 Hz (Far)
25 to 20,000 Hz (Close)
(see Figures 1-16)
Polar Pattern:
Cardioid
(see Figures 17-20)
Equalization:
16 positions, switch selectable
(see Figures 1-16)
Impedance:
150 ohms, balanced
Sensitivity,
Open Circuit Voltage:
2.5 mV/ Pascal at 1000 Hz
Power Level:
-53 dB at 1000 Hz
(0 dB = 1 mW/Pascal)
Hum Pickup Level:
-135 dBm typical at 60 Hz in a 1 m
OE field
Magnetic Circuit:
N/DYM® magnet in a non-welded
circuit
Phasing:
Pin 2 will be positive referenced to pin
3 with a positive pressure on dia-
phragm
Case Material:
Aluminum and Steel
Dimensions:
122 mm (4.8 in.) Height
109 mm (4.3 in.) Width
89 mm (3.5 in.) Length
(see Figure 21)
Finish:
Satin Nickel
Net Weight:
380 g (13.4 oz)
Shipping Weight:
1.56 Kg (3 lbs, 7 oz)
Package Dimensions:
355.6 mm (14 in.)
x 215.9 mm (8.5 in.)
x 152.4 (6 in.)
Accessories Included:
81715 stand adapter
Carrying case
3/32 inch screwdriver
Figure 22—Wiring Diagram