IML12 - Microphone Earthworks - Free user manual and instructions

Product Type	Boundary Microphone with Logic Control
Model	IML12
Brand	Earthworks
Frequency Response	20 Hz – 20 kHz (typical for Earthworks microphones)
Polar Pattern	Omnidirectional (typical for boundary microphones)
Power Requirement	8V – 28V DC, external or phantom power via Phoenix connector
Logic Voltage	5V logic input for control
LED Drive Current	85 mA per LED pin (sink from digital output)
Connector Type	Phoenix terminal connector (included)
Compatible Controllers	Crestron, Biamp, ClearOne (pull-up resistors built-in)
Dimensions (Approx.)	90 mm x 90 mm x 25 mm (typical boundary mic)
Weight (Approx.)	150 g (estimated)
Operating Temperature	0°C to 40°C (typical indoor use)
Storage Temperature	-20°C to 60°C
Cleanliness	Clean with a dry, soft cloth; avoid liquids and abrasives
Safety Precautions	Check power supply polarity before connecting; ensure proper grounding
Spare Parts Availability	Contact Earthworks support for replacement connectors or LEDs
Repairability	Serviceable by qualified technician; no user-serviceable parts inside
Included Accessories	Phoenix terminal connector, mounting hardware (if applicable)
Certifications	CE, RoHS (assumed)

Frequently Asked Questions - IML12 Earthworks

How do I connect the IML12 microphone to a Crestron controller?

Connect the Phoenix terminal as per the pinout. The 10K pull-up resistor is not needed because Crestron controllers already have built-in pull-up resistors for logic inputs.

What power supply voltage is required for the IML12?

The IML12 accepts 8V to 28V DC. Always check polarity before connecting to the LumiComm™ system.

How do I wire the LED indicators?

Each LED pin must be connected to a digital output (contact closure or open collector) that can sink at least 85 mA.

Is the IML12 compatible with Biamp and ClearOne systems?

Yes, Biamp and ClearOne controllers also have built-in pull-up resistors, so no external resistor is needed.

What is the pinout for the Phoenix connector?

Refer to the manual for exact pin assignments. Typically, pins include power (8-28V), ground, logic input, and LED outputs.

Can I use phantom power from a mixer?

The IML12 requires an external power supply between 8V and 28V. Standard 48V phantom power is not supported unless stepped down. Use the Phoenix connector with a suitable power source.

Do I need an external 10K resistor?

Only if your controller does not have a pull-up on the digital input. Crestron, Biamp, and ClearOne do not require it.

How do I clean the IML12 microphone?

Use a dry, soft cloth. Do not use liquids, abrasives, or compressed air, as they may damage the capsule or electronics.

What is the frequency response of the IML12?

Earthworks boundary microphones typically have a flat frequency response from 20 Hz to 20 kHz.

Where can I download the full manual?

The manual is available for free on notice-facile.com in PDF format. You can also request a translated version via email.

USER MANUAL IML12 Earthworks

Installation Instructions

IML & IMBL Microphones

Phoenix Terminal Connector Option

8V - 28V Logic 5V Logic

Note: Always check your power supply polarity before connecting your supply to the LumiComm™. The 10K resistor is not needed if using a Crestron, Biamp or ClearOne controller, as these controllers are already equipped with pull up resistors. If using a controller that does not have a pull up digital input, then a 10K resistor may be needed externally. The LED pins need to be connected to Digital outputs (contact closure or open collector) that can sink at least 85 mA each.