Earthworks QTC30 User Manual

Technical Support
Should you have any questions regarding your
QTC30 microphone please contact us:
e-mail: Support@earthworksaudio.com
phone: (603) 654-2433, ext. 19
(9am – 5pm ET)
For warranty and product return/exchange
information please refer to the back of the
enclosed Calibration Chart.
FIFTEEN-YEAR WARRANTY
All Earthworks products (excluding acces-
sories) carry a fifteen-year limited warranty
(parts and labor). If you have any problems
with your Earthworks products, please con-
tact our warranty/repair department by email
at: returns@earthworksaudio.com or by tele-
phone at (603) 654-6427, Ext. 19.
Earthworks, Inc.
37 Wilton Rd.
Milford, NH 03055 USA
Phone: 1-603-654-6427
Fax: 1-603-654-6107
earthworksaudio.com
Made in U.S.A.
Printed in U.S.A.

Earthworks QTC30 Specifications

Frequency and Sensitivity

frequency response	6Hz to 30kHz +1/-3dB
sensitivity	36mV/Pa (Typical)
peak acoustic input	140dB SPL

Power Requirements

power requirements	24-48V Phantom, 10mA

Output and Impedance

output	XLR-3
output impedance	65Ω, balanced between pins 2 & 3
minimum load	600Ω between pins 2 & 3

Noise and Dimensions

noise	20dB, A equivalent
dimensions	165 x 22 mm (6.5 x .860 in.)
weight	160g (.3lb)

Summary

Technical Support and Contact Information

Fifteen-Year Product Warranty

Product Description and Features

Microphone Applications

Microphone Care and Handling

Technical Specifications

Frequency Response

The range of frequencies the microphone accurately captures, from 6Hz to 30kHz.

Polar Pattern

Describes the microphone's directional sensitivity, which is omnidirectional.

Sensitivity

Measures the microphone's output voltage for a given sound pressure level, typically 30mV/Pa.

Power Requirements

Specifies the phantom power needed, which is 48V and draws 10mA.

Peak Acoustic Input

The maximum sound pressure level the microphone can handle without distortion.

Output Type

Indicates the type of connector used for the audio output, an XLR connector.

Output Impedance

The resistance of the microphone's output signal, specified as 100Ω balanced.

Minimum Load

The lowest impedance the microphone can drive without signal degradation.

Noise Level

Specifies the self-noise of the microphone, measured as 22dBA equivalent.

Dimensions

Provides the physical size of the microphone, 6.25 x 0.860 inches.

Weight

Indicates the physical weight of the microphone, 0.35lb (160g).

Compliance

Notes that the microphone meets CE standards for safety and electromagnetic compatibility.