Electro-Voice RE90L User manual

Description and Applications
The Electro-Voice RE90L is an omnidirec-
tional back-electret condenser lavalier micro-
phone designed for the Architectural Series
Microphone line. The RE90L is intended for
sound reinforcement applications such as
houses of worship, schools, or other venues
where full-range, natural, well-balanced
sound is required. The omnidirectional po-
larcharacteristicsoftheRE90Lprovideclean
and accurate sonic quality and uniform out-
put regardless of the microphone's position
relative to the sound source.
TheRE90Lisdesignedtoattachtothetalker's
clothing using the supplied clips. The elec-
tronics housing features a side clip to facili-
tate attachment to a belt or pocket. In addi-
tion,the extremely compact size ofthe RE90L
is ideal for performance or house of worship
applications where the microphone must re-
mainas inconspicuous as possible tothe view-
ing audience.
Powering the RE90L
The RE90L is powered by an external 9- to
52- volt phantom power supply. The elec-
tronics circuitry is wrapped with an insulated
copperfoilfor superior emi/rfi shielding. The
module is enclosed in a high-strength poly-
carbonateresin housing to forma package that
isvery light-weight and extremely durable for
outstanding reliability and long life.
Operation
To operate the RE90L use high-quality bal-
anced cable with 3-pin XLR-type connectors
to connect the electronics housing to the
mixer input which is providing the phantom
power. The connecting cable used should be
standard two-conductor shielded type; the
shield is used as ground return and must be
properly connected to avoid electrical noise.
Microphone Placement and Cord
Looping
Typical microphone placement is shown in
the illustration. For best results, the RE90L
should be positioned as close to the mouth as
possible. It is important to loop the cable
as shown to eliminate cable rustling noise.
Windscreen
Use the external windscreen to prevent wind
and pop noise.
Architects’ and Engineer’s
Specifications
The microphone shall be an ultra-miniature,
back-electret condenser with an omnidirec-
tional polar pattern. The microphone shall
have a frequency response from 50 to 18,000
Hz. The product shall have a balanced out-
putwith a 100-Ohm nominal impedance. The
open-circuit output voltage shall be 12.6 mV/
pascal. The microphone capsule shall be
black: the electronics housing made of black
polycarbonate resin.
The microphone shall be permanently con-
nected to its electronics module with a 1.8 m
(6 ft) length of rugged, three conductor,
shielded, miniature audio cable. The micro-
phone shall be supplied with tie clasps and a
storage pouch. The Electro-Voice RE90L is
specified.
Limited Warranty
Electro-Voiceproducts are guaranteed against
malfunction due to defects in materials or
workmanship for a specified period, as noted
in the individual product-line statement(s)
below, or in the individual product data sheet
or owner’s manual, beginning with the date
RE90L
Ultra-Miniature Condenser
Lavalier Microphone
• Ultra-Miniature Size for Inconspicu-
ous Attachment
• Light Weight
• Omnidirectional Polar Pattern Pro-
vides Clean Sound, and Uniform
response
• Complete Assortment of Clips

RE90L Ultra-Miniature Condenser Lavalier Microphone
RE90L Ultra-Miniature Condenser Lavalier Microphone
2
Figure 1—Polars
of original purchase. If such malfunction oc-
curs during the specified period, the product
will be repaired or replaced (at our option)
without charge. The product will be returned
to the customer prepaid. Exclusions and
Limitations:The Limited Warranty does not
apply to: (a) exterior finish or appearance; (b)
certain specific items described in the indi-
vidual product-line statement(s) below, or in
the individual product data sheet or owner’s
manual; (c) malfunction resulting from use
oroperation of the product other thanasspeci-
fied in the product data sheet or owner’s
manual; (d) malfunction resulting from mis-
use or abuse of the product; or (e) malfunc-
tion occurring at any time after repairs have
beenmade to the productby anyone other than
Electro-Voice Service or any of its authorized
service representatives. ObtainingWarranty
Service: To obtain warranty service, a cus-
tomer must deliver the product, prepaid, to
Electro-Voice Service or any of its authorized
service representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of autho-
rizedservicerepresentativesisavailablefrom
Electro-Voice Service at 600 Cecil Street,
Buchanan, MI 49107 (800/234-6831 or FAX
616/695-4743). IncidentalandConsequen-
tial Damages Excluded: Product repair or
replacement and return to the customer are
the only remedies provided to the customer.
Electro-Voice shall not be liable for any inci-
dental or consequential damages including,
without limitation, injury to persons or prop-
erty or loss of use. Some states do not allow
the exclusion or limitation of incidental or
consequential damages so the above limita-
tionorexclusionmaynotapplytoyou.Other
Rights: This warranty gives you specific le-
gal rights, and you may also have other rights
which vary from state to state.
Electro-Voice WiredMicrophonesare guar-
anteed against malfunction from any cause
for two (2) years from the date of original
purchase. In addition, the Limited Warranty
for the acoustic system contained in these mi-
crophones shall apply for the life of the prod-
uct, defined as a period of ten (10) years from
the date that the manufacture of the specific
microphone has been discontinued. Any and
all active electronics incorporated in these
microphonesare guaranteed against malfunc-
tion due to defects in materials or workman-
ship for a period of three (3) years from the
date of original purchase. The Limited War-
ranty does not extend to cables, cable con-
nectors, or switches. Additional details are
included in the Uniform Limited Warranty
statement.
For warranty repair or service information,
contact the service repair department at:
616/695-6831 or 800/685-2606.
For technical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Standard
Time.
Specifications subject to change without no-
tice.
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330
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90
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240
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150
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210
500 Hz 1,000 Hz
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180
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300
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270
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0
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330
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30
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60
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90
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120
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240
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5,000 Hz
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300
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270

RE90L Ultra-Miniature Condenser Lavalier Microphone
RE90L Ultra-Miniature Condenser Lavalier Microphone
3
Figure 2—Frequency Response
Figure 4—Microphone Placement
Figure 3—Looping the Cable to
Eliminate Cable Rustling Noise
20
10 dB
30 100 500 1,000 2,000 5,000 10,000 20,000 200
50
FREQUENCY IN HERTZ
10-in

RE90L Ultra-Miniature Condenser Lavalier Microphone
RE90L Ultra-Miniature Condenser Lavalier Microphone
4
MICROPHONES—Condensers Part Number 535039 — 9828
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:
Condenser, back electret
Frequency Response:
50 to 18,000 Hz
Polar Pattern:
Omnidirectional
Sensitivity,
Open-Circuit Voltage:
12.6 mV/pascal
Power Level:
-34 dB at 1,000 Hz
(0 dB = 1 mW/pascal)
Maximum SPL at 1% THD:
130 dB SPL
Equivalent Noise:
Less than 29 dB SPL, typical, A
weighted
(0 dB = 20 micropascals)
Dynamic Range:
Greater than 100 dB
Output Impedance at 1,000 Hz:
100 Ohms typical
Power Requirements:
9 to 52 V dc phantom supply
CurrentConsumption:
1.0 mA typical
Polarity:
A positive pressure on the diaphragm
produces a positive voltage on output
pin 2 (+)
Finish:
Nonreflecting black
Dimensions:
Electronics Module,
Length:
93 mm (3.65 in.)
Body Diameter:
19 mm (0.75 in.)
Capsule Diameter:
4.9 mm (0.19 in.)
Cable Length:
1.8 m (6 ft), permanently attached
Net Weight:
33.5 g (1.2 oz)
Shipping Weight:
235 g (8.3 oz)
Furnished Accessories:
External windscreen
Replacement Part Number: 73974
Universal tie clip
Replacement Part Number: 73972
Tie tac
Replacement Part Number: 73973
Zippered gig bag
Replacement Part Number: 73740
Accessories:
Dual microphone clip
Order Part Number: 73975