Electro-Voice RE90L Specifications

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-
lar characteristics of the RE90L provide clean
and accurate sonic quality and uniform out-
put regardless of the microphone's position
relative to the sound source.
The RE90L is designed to attach to the talker'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 of the RE90L
is ideal for performance or house of worship
applications where the microphone must re-
main as inconspicuous as possible to the 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
copper foil for superior emi/rfi shielding. The
module is enclosed in a high-strength poly-
carbonate resin housing to form a package that
is very 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.
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
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-
put with 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-Voice products 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