IM3, IM6, IM10 & IM12

30kHz Gooseneck Microphones for Ceiling or Table Installation

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The IM Installation Series gooseneck microphones provide a low profile, pristine sounding microphone solution for permanent installations. Featuring a flat frequency response and patented polar technology, orators will maintain the same intelligibility throughout the room without a loss of high frequencies.

  • 30kHz flat frequency response
  • No spotlighting
  • Uniform frequency response on or off axis
  • More gain before feedback
  • Picks up almost no sound from the rear of the microphone
  • Near perfect polar pattern
  • Mini-gooseneck allows quick and easy positioning
  • Black, white or silver finish on exposed sections
  • Available with 3, 6, 10 or 12 inch gooseneck
  • Primary applications include teleconferencing, distance learning, surveillance, boardrooms, government facilities, and ambient room miking
IM3-B 3″ (76mm) gooseneck, black finish

IM3-W 3″ (76mm) gooseneck, white finish

IM3-S 3″ (76mm) gooseneck, silver finish

IM6-B 6″ (152mm) gooseneck, black finish

IM6-W 6″ (152mm) gooseneck, white finish

IM6-S 6″ (152mm) gooseneck, silver finish

IM10-B 10″ (254mm) gooseneck, black finish

IM10-W 10″ (254mm) gooseneck, white finish

IM10-S 10″ (254mm) gooseneck, silver finish

IM12-B 12″ (305mm) gooseneck, black finish

IM12-W 12″ (305mm) gooseneck, white finish

IM12-S 12″ (305mm) gooseneck, silver finish

Ship Dates
 IM Models in Black - Now Shipping
 IM Models in White - Now Shipping
 IM Models in Silver - October 2014
Frequency Response: 30Hz to 30kHz ±2dB at 12 inches (30.5cm)

Polar Pattern: Cardioid

Sensitivity: 10mV/Pa (-40dBV/Pa)

Power Requirements: 48V Phantom, 10mA

Max Acoustic Input: 145dB SPL

Output: XLR (pin 2+)

Output Impedance: 100Ω balanced (50Ω each pins 2 & 3)

Min Output Load: 600Ω between pins 2 & 3

Noise: 22dB SPL equivalent (A weighted)

The narrow usable portion of a conventional microphone’s polar response (with full frequency response) provides only a narrow area that will pick up sounds without high frequency losses at the sides of the microphone. The figures on the left indicate how many conventional microphones it takes to cover a room (with an 8 foot ceiling) and provide the full frequency response of the microphone at the head of a six foot man, in standing position.

The figure on the right shows the much wider polar response (with full frequency response) of Earthworks directional High Definition Microphones™, requiring fewer microphones. In addition you also have more sound level before feedback, no spotlighting or highlighting, more rejection of sounds from the rear of the microphone, in addition to a vastly superior sound quality.

Conventional Microphone Coverage Area




Earthworks Microphone Coverage Area


CX Magazine“Each mic yields more coverage, so you need fewer of them. The first benefit of this is potentially a reduced scope for phase errors between mics. The second is that you require less cabling and DSP to connect and process inputs.”
IM Drawing

I am having issues with phantom power load issues when using Tesira Forte DSP. What is the solution?

When using a Tesira Forte DSP with Earthworks microphones, we recommend using an external phantom power supply, such as a Whirlwind MicPower, in line with our microphones. Earthworks microphones require 10mA, and the Tesira Forte can only supply 7mA per Audio channel. Ensure that the phantom power on the DSP is disabled when using an external phantom power supply.