Omnidirectional lavalier mic with TA4F

  • Small and unobtrusive low-profile design
  • Omni-directional polar pattern delivers an open and natural sound
  • No proximity effect
  • Wide dynamic range and frequency response
  • Clothing clip holds microphone securely and attaches easily to garments

The OL3 is a robust, multi-purpose lavalier microphone. It is ideal for presentation, public speaking, and on-camera applications where its open and natural sonic characteristics deliver accurate and natural voice reproduction. The low-profile design makes it easy to physically manage, and eliminates unsightly presence other larger sized lavaliers present. The omni-directional polar pattern has no proximity effect, and is ideal for delivering an open and natural sound, even when the user is turning their head sideto-side. The small clothing clip attaches the microphone securely to clothing items or surfaces. The included foam windscreen is effective in reducing wind noise. The 4-pin mini plug is compatible with all current Electro-Voice bodypack transmitters, as well as many other brands who use the 4-pin mini connector convention.


Element type Self-biased condenser
Frequency response 60 Hz - 15 kHz
Polar pattern Omnidirectional

Sensitivity: open circuitvoltage. 1 kHz 17.5 mV/Pascal (-35 dBV/PA)
Maximum SPL 130 dB SPL
Impedance 2200 ohms
Power requirements 3-9 VDC
Polarity Positive pressure on diaphragm produces positive voltage at pin 2 relative to pin 1
Electrical contact pinouts
Pin #1 - Ground, shield
Pin #2 - Audio
Pin #3 - Bias voltage
Pin #4 - N/C
Dimensions (cable length) 57.1" (1450 mm)
Dimensions (head length) 0.36" (9.2 mm)
Dimensions (head diameter) 0.2" (5 mm)
Net weight 0.617 oz (17.5 g)
Shipping weight 6.173 oz (175 g)
Microphone connector: 4-pin mini plug
Head finish Non-reflecting black
Material Brass, steel wire cloth grille, black flexible PVC cable



Name Language Size Date
ProSound Loudspeakers and Electronics Catalog EN 15.43MB Apr 2, 2019
Name Size Date
Environmental Compliance Document 148KB Oct 3, 2017
RE3 Accessory Family EC Declaration of Conformity 499KB Mar 29, 2019
Name Language Size Date
RE3-ACC-OL3 Engineering Data Sheet EN 1.18MB Nov 29, 2018
RE3-ACC-OL3 Engineering Data Sheet DE 857KB Jul 17, 2019
RE3-ACC-OL3 Engineering Data Sheet ES 533KB Jul 17, 2019
RE3-ACC-OL3 Engineering Data Sheet FR 514KB May 29, 2019
RE3-ACC-OL3 Engineering Data Sheet PT 515KB May 29, 2019
RE3-ACC-OL3 Engineering Data Sheet TH 556KB Jul 17, 2019
RE3-ACC-OL3 Engineering Data Sheet ZH 602KB Jul 17, 2019
Name Language Size Date
RE3 Flyer EN 1.68MB Feb 7, 2019
Name Language Size Date
RE3 UHF Wireless Installation manual EN 3.25MB Dec 20, 2018
RE3 UHF Wireless Installation manual DE 4MB Jun 16, 2020

EV RE3-ACC-OL3 clip Trim

EV RE3-ACC-OL3 cv1 Trim

EV RE3-ACC-OL3 fr Trim

Name Language Size Date
Warranty conditions for Electro-Voice products in North America EN 160KB Sep 14, 2020
General Terms & Conditions of Deliver for Export Business EN 57KB Nov 26, 2014
Allgemeine Lieferbedingungen DE 184KB Nov 30, 2016
Name Language Size Date
Audio 101 - Basic Audio Terminology EN 2.74MB Dec 13, 2012
Audio 101 - Microphone Basics EN 4.25MB Dec 13, 2012
Audio 101 - Wireless Microphone Basics EN 3.52MB Dec 13, 2012
Microphone Facts- Axial Response EN 1.36MB May 3, 2012
PA Bible 03: Microphone Types EN 462KB Dec 26, 2007
PA Bible 08: Microphone Techniques EN 604KB Dec 26, 2007
PA Bible 15: Barrier Miking EN 254KB Dec 26, 2007
The EV PA Bible EN 1.14MB Dec 26, 2007
The PA Bible Chapter Zero EN 1.14MB Jun 11, 2018
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