Electro-Voice RE20 User manual

RE20
Variable-D®
Dynamic Cardioid
Microphone
General Description: Technical Specifications:
:tnemelEgnitareneGcimanyD
:esnopseRycneuqerFzH000,81-54
:nrettaPraloPdioidraC
:ecnadepmIdecnalabsmho051
tiucriCnepO,ytivitisneS :zHk1,egatloV lacsap/Vm5.1
lacipyt,leveLpukciPmuH detsreoillim1/zH06( :)dleif mBd031-
:ytiraloPniPotdecnereferevitisopeblliw2niP mgarhpaidnoerusserpevitisophtiw3
:lairetaMesaCleetS
,snoisnemiD :htgneL).ni35.8(mm7.612
:retemaiDtsediW).ni41.2(mm4.45
:retemaiDydoB).ni49.1(mm2.94
:hsiniFegieBnwaF
:thgieWteN)zo01,bl1(g737
:thgieWgnippihS)zo4,bl3(g474,1
:dehsinruFseirosseccApmalcdnats51718
:seirosseccAlanoitpOrofretpadadnatsdetnuom-kcohsA903 moobgnidrocerrodnatsroolfhtiwesu
Key Features:
• Favorite of broadcast show hosts and voice-
over studios
• Ideal for instrument recording, especially
kick drums and acoustic guitars
• Studio condenser response yet no powering
required and immune to overloading
• Large Acoustalloy diaphragm and low-mass
aluminum voice coil
• Dual-ported, continuously Variable-D®with
minimal proximity effect
• Steel case and hum-bucking coil provide
exceptional magnetic shielding
The Electro-Voice RE20 is a professional-quality dynamic
cardioidmicrophonecreatedspeciallyforrecording,broadcast
and sound-reinforcement applications requiring essentially
flat response over a very wide frequency range. The wide
frequency response, coupled with excellent transient
response, make the RE20 easily comparable to the finest
condensercardioidmicrophonesandaneasilyoperated“bass
tilt down” switch corrects spectrum balance for use in long-
reach situations or other applications where bass attenuation
is needed.
Atruecardioidmicrophone,the RE20offersgreatestrejection
at180ºoff axis -directlyto therearof themicrophone.Pattern
control is so consistent that the frequency response is nearly
independentof angular location ofthe soundsource, creating
virtually no off-axis coloration, yet providing greatest possible
rejectionof unwantedsounds. An integralblast andwind filter
covers each acoustic opening on the RE20. In recording
sessionsoronstage, singers can“closetalk”the microphone,
singing with their lips almost touching the grille screen with
no worry of “P-pops” or excessive sibilance. Part of the filter
alsoshockmountsthe internal microphoneelement,reducing
the transfer of vibrations from external sources. The
exceptional performance of the RE20 is achieved by using a
large Acoustalloy diaphragm in combination with an
exceptionally low-mass aluminum voice coil. Using this
diaphragm assembly, the RE20 is capable of reproducing
extremely high sound pressure levels with no fear of the
overload and distortion often experienced with phantom-
poweredcondensers. TheRE20will also continueto function
flawlessly in high humidity and elevated temperatures that
wouldseriouslydegradecompetitivecondensermicrophones.
Amassivesteelhousingandeffectivehum-buckingcoilassure
theRE20’sresistancetomagneticallyinducedhumandnoise.
This means the RE20 can be used successfully in situations
where other microphones would experience unacceptable
levels of hum and buzz. By exploiting the strength of its steel
housing and employing a mechanical nesting concept, EV
designers have created an exceptionally rugged microphone
with superior handling noise rejection ideally suited for
professional uses.

12000 Portland Avenue South, Burnsville, MN 55337
Phone:[phone], Fax:[phone]
www.electrovoice.com
© Telex Communications, Inc. 6/2006
PartNumber534678 RevD
U.S.A. and Canada only. For customer orders, contact Customer Service at:
800/392-3497 Fax: [phone]
Europe, Africa, and Middle East only. For customer orders, contact Customer Service at:
+ 49 9421-706 0 Fax: + 49 9421-706 265
Other International locations. For customer orders, contact Customer Service at:
+ 1 952 884-4051 Fax: + 1 952 736-4212
For warranty repair or service information, contact the Service Repair department at:
800/553-5992 or 402/467-5321
For technical assistance, contact Technical Support at:
800/392-3497 or 952/736-4656
Specifications subject to change without notice.
Dimension Drawing:
Frequency Response: Wiring Diagram:
Polar Response:
Architects’ and Engineers’
Specifications:
The microphone shall be a cardioid type with integral blast filter
protecting all acoustic openings. The blast filter shall also serve as
ashockmountfortheinternalmicrophoneelement.Themicrophone
shall have a wide-range uniform frequency response from 45-
18,000 Hz. An integral passive network shall be provided so that
whenthefilterswitch is inthe“on”position, low-frequencyresponse
shall tilt down 4.5 dB from 400-100 Hz. With switch in “off” position,
microphoneshallbeessentially“flat”from80-6,000Hz,with a broad
2.5dB rise in response from 6,000-14,000Hz, and nominally down
3dB at18,000 Hz. Responsebelow 80 Hzshall be nominally down
3 dB at 45 Hz. Output level shall be 1.5mV/Pascal. Nominal
impedance of 150 ohms. Response at any angular position away
from the major axis shall be essentially similar to the response
on the major axis, but attenuated uniformly at all frequencies by an
amount appropriate to that angular position. Attenuation at
frequencies from 45-10,000 Hz (refer to major axis signal value)
shallexceed15dBat180°frommajoraxis in anyplane.Attenuation
above 10,000 Hz shall exceed 13 dB. Polar characteristics shall
besufficientlyuniformin all planessothatit is,effectively,acardioid
of revolution. There shall be a shield to prevent dust and iron
particles from reaching the diaphragm. The case shall be made of
steel. The microphone shall have a maximum diameter of 54.4
mm (2.14 in.), a body diameter of 49.2 mm (1.94 in.) and a length
of 216.7 mm (8.53 in.). Finish shall be a nonreflecting fawn beige.
A stand adapter shall be supplied. The Electro-Voice RE20 is
specified.
General Description (cont’):
The bass-boosting proximity effect common to most directional
microphones when used close to the sound source, is eliminated
in the RE20. This is accomplished via the application of the EV-
exclusive Variable-D® technology. By controlling the effect of
microphoneproximity,theRE20can belocatedveryclose to sound
sources without a loss in clarity or definition making the RE20 ideal
for tight vocals and challenging instruments. It can be used inside
bass drums, on acoustic guitars, and is found in voice booths and
broadcasting studios everywhere.
Disassembly:
RE20PartNumber:
• 16207816