Polsen OLM-20 Dual Omnidirectional Lavalier Microphone

Polsen OLM-20 Dual Omnidirectional Lavalier Microphone

Polsen OLM-20 Dual Omnidirectional Lavalier Microphone

B&H # POOLM20 MFR # OLM-20
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Product Highlights

  • Dual OLM-10 Omnidirectional Mic Capsules
  • Single 1/8" Stereo Connector
  • Each Mic Routes to Discrete Channel
  • Left/Right Channel Indicated on Mics
  • 13.5' Cable with 10' Between Mics
  • Battery Powered
  • Works with Most 1/8" Recording Devices
  • Includes 2 Tie Clips & Foam Windscreens
  • Includes LR44 Battery
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Quantity: Dual

Dual Single

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Polsen OLM-20 overview

  • 1Description

Designed for recording interviews, the OLM-20 Dual Omnidirectional Lavalier Microphone from Polsen is comprised of two of the well-received OLM-10 omnidirectional lavalier microphones. It terminates in a single 1/8" stereo connector, with each microphone recording to a discrete channel on your DSLR, camcorder, or audio recorder with a microphone input. Not limited to just interview applications, the OLM-20 can be used for presentations, podcasts, webcasts, or any situation where more than one subject needs to be recorded.

The OLM-20's dual electret condenser capsules are designed to deliver clear and natural sound, with their omnidirectional polar pattern providing off-axis response, even if the subject turns their head while talking. Both mics offer low sensitivity to wind and handling noise, as well as vocal plosives.

Thanks to its battery-operated design, the OLM-20 can be used with any camera or recorder that supports a 1/8" stereo mic level input, without the need for additional equipment or adapters. Each microphone records to a discrete channel, and the microphones themselves are labeled left and right. Its 13.5' cable provides 10' of distance between each microphone for comfortable placement, while the included tie clips allow for hands-free use.

Omnidirectional Polar Pattern
The omnidirectional polar pattern provides excellent off-axis response, even if a subject turns their head while speaking
Wide Range of Compatibility
Compatible with DSLR cameras, camcorders, and most devices with a 1/8" (3.5mm) mic-level input
No Extra Accessories Needed
The OLM-20's design sends each microphone to a discreet channel without need for extra adapter or mixer
Low Sensitivity to Wind Noise and Vocal Plosives
Each microphone offers low sensitivity to wind, handling noise, and vocal plosives
13.5' (4.1 m) Cable
The 13.5' cable provides 10' of distance between each mic, 1' of distance between its battery box and stopper, and 2.5' of distance from the battery box to its 1/8" (3.5mm) connector
In-Line Battery Pack and Power Switch
The OLM-20 is powered by a 1.5 V button cell battery (included) and does not require external power for operation. The power switch conserves battery life
Tie Clip and Foam Windscreen
The included tie clips allow for hands-free operation while the windscreens help ensure quiet, professional-quality recordings
UPC: 847628578777
In the Box
Polsen OLM-20 Dual Omnidirectional Lavalier Microphone
  • 2 x Tie Clips
  • 2 x Foam Windscreens
  • LR44 Battery
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Polsen OLM-20 specs

    Transducer Electret Condenser
    Polar Pattern Omnidirectional
    Frequency Response 30 Hz to 18 kHz
    Sensitivity -65 dB ± 3 dB (0 dB=1 v/ubar @ 1 kHz)
    Impedance 1000 Ω ± 30% @ 1 kHz
    Operating Voltage 1.5 V DC
    Connector 1/8" (3.5 mm) gold-plated stereo plug
    Power 1.5 V button cell battery
    Length Microphone: 0.79" (20 mm), each
    Capsule Diameter 0.3" (7.5 mm), per capsule
    Cable Total Length: 13.5' (4.1 m)
    Length Between Microphones: 10' (3 m)
    Length Between Battery Box and Stopper: 1' (0.3 m)
    Length From Battery Box to Connector: 2.5' (0.8 m)
    Packaging Info
    Package Weight 0.25 lb
    Box Dimensions (LxWxH) 8.3 x 4.6 x 1.2"

    Polsen OLM-20 reviews

    OLM-20 Dual Omnidirectional Lavalier Microphone is rated 4.5 out of 5 by 35.
    Rated 5 out of 5 by from A cheap lav that packs a punch I didn't expect much out of this lavalier when I planned to use it for small projects that required short interviews and on set dialogue, but I came to find out that the audio quality really stood out for catching professional sounds if it's just put in the right place and distance. I'm now planning on bringing this little lav for longer interview sessions and film sets. The only two things I see holding this lav from being perfect is not being wireless or being able to tell how full the batteries are. Other than that, everything works swell as long as you clip it in the right place. Enrique Bartolo - Cinematographer
    Date published: 2016-02-28
    Rated 4 out of 5 by from Good sound Two microphones for stereo or two people. The two mics come with the wire together. You need to pull them apart if you want them to reach two different people. The sound seems good. Sensitivity too. I'm using them for interviews. It uses a button battery so not as easy to find as a AAA. I experienced some scratching sound when holding the switch and turning on the mic. But once I set it down, there was no issue during use. This is not scratching due to mic movement. It's an electrical scratching from the switch area. I'd buy these again.
    Date published: 2016-03-06
    Rated 5 out of 5 by from Excellent product, you can not ask for more for the price. I have many years in the video business, so I have microphones of many brands and expensive, so it took me a lot to buy these microphones because I thought that because of the low price would be of very poor quality. But one day I decided to try them and I was very satisfied. They do not ask anything of a professional. Maybe the materials it's built on will not be for many years, but today it's just what I needed. I used lavalier microphones with good quality, but they would not hurt if they were stolen or forgotten in the work I'm doing. Highly recommend.
    Date published: 2016-12-22
    Rated 3 out of 5 by from Great Price - works well A great Mic when used as a Direct Input into a Tascam for off camera live / outdoor Narrative tracks. Also can be used in an interview / talking head shot. The cable is one of those pull apart wire sets. So you just separate the Mic till you get the distance you want. But! Be aware that it does pick up RF. So you may have to use a Filter to Cut / Shelf the spurious sounds. In a Live environment you will not hear the background noise. Definitely not for super quiet scenes in the Studio.
    Date published: 2017-05-10
    Rated 5 out of 5 by from TryptoNite LOVES this Product!! Perfect Product! Our key sponsor TryptoNite absolutley loves this Lav Mic system. The cables are both very long which allows the two subjects being interviewed to be comfortably situated in front of the camera. Combining the microphones also eliminates another cable which makes our sound engineer very happy! Thank you B&H for keeping this option affordable which makes our work easier. - Daniel McCaughan
    Date published: 2016-12-08
    Rated 5 out of 5 by from Nice microphone for the price I have very little experience with external microphones but I needed a lavaliere mic for a project. �B & H's advice was spot on. �The mics work well and are simple to use. �For my use, the sound is fine. � They did not work when I ran the first test. �I checked the battery to be sure I had installed it correctly. �It was in the proper orientation. �I tried bending the battery contacts upward so they would make a tighter connection with the battery once the cover was replaced, and that fixed the problem.
    Date published: 2018-01-02
    Rated 4 out of 5 by from Fine sound, but a little more fragile than I expected I've used this for a couple of interviews so far. The sound is superb. BUT the two-conductor cord to the two microphones should have separated a little more easily. Without splitting the cord, the microphones were too close for an interview, but the plastic coating ripped away on one side when I split it. It was easily repaired with electrical tape and works fine, but for $44 I expected such a standard cord to be sturdier.� I'm using it with my Zoom H6 recorder, and the sound from the two microphones is great--clear, no noise, and well balanced.
    Date published: 2018-03-19
    Rated 4 out of 5 by from Cheap Lavs for Two Personal Interviews Polsen has the right idea about constructing a simple rig for an interviewer and questioner for audio recording or video interviews. One voice goes to one channel and the second voice to the other channel. Great idea, but very cheap execution. These mics are low quality and very noisy. Worst is the old style button battery power supply. Why not an AA battery? Hopefully some company will copy this with good quality lav mics and a better power supply. It would be so easy to do it right, with good mics and a high-quality power supply. But not this time.
    Date published: 2014-10-07
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