Earthworks TC20 User manual

Technical Support
Should you have any questions regarding your
TC20 microphone please contact us:
e-mail: [email protected]
phone: [phone] (9a.m. – 5p.m. ET)
For warranty and product return/exchange
information please refer to the back of the
enclosed Calibration Chart.
Earthworks, Inc.
37 Wilton Rd.
Milford, NH 03055 USA
Phone: [phone]
Fax: [phone]
http://www.EarthworksAudio.com
Made in U.S.A.
TC20 Omnidirectional Microphone
Owner’s Manual

Description
Earthworks TC20 is an omnidirectional
(pressure) prepolarized condenser microphone
directly coupled to a dedicated wideband, low
output impedance preamplifier. The TC20
requires a standard 48V phantom power supply.
It features a linear free-field frequency response
from 10Hz to 20kHz (Fig. 2), fast impulse
response (Fig. 3), very low handling noise, uni-
form polar pattern, and very high SPL handling
capabilities. It exhibits no proximity effect.
Applications
Earthworks TC20 is easy to operate.
Connect the microphone to a microphone
preamplifier supplying 48V phantom power
using a standard XLR microphone cable. Please
allow up to one minute for the microphone to settle.
Plugging in the microphone “hot” (phantom
power already present at the input) will not
damage the microphone, and is actually
preferred for faster settling. It is normal for any
phantom powered mic to “pop” when plugged
in or powered up. Make sure to mute the signal
to speakers or headphones when phantom
power is first applied.
The TC20 is our least expensive general-
purpose omni. It is a good choice for close-
miking louder sources such as instrument amps,
drums, or close-miked brass. The TC20 under
the strings of a stand-up bass or inside a kick
drum will produce amazing sound. It is popular
for drum overheads. A pair of TC20s connected
to a stereo recorder will provide excellent results
for recording rehearsals and performances. The
TC20 is great for general studio use and is an
exceptional value. It has no handling noise, no
proximity effect, and is very forgiving in terms
of placement.
A mounting clip is included with the
microphone. This microphone has no
removable parts.
Care of Microphones
Earthworks TC20 microphone is a precision
instrument designed and built to provide years
of top performance. Following these simple
rules will help to protect your investment in the
TC20:
• Avoid touching the front protective screen.
• Never attempt to disassemble the
microphone – it cannot be opened.
• Avoid extreme heat and condensing
humidity. Allow the microphone to warm up
in the case when bringing it in from the cold
weather. Rough handling may damage the
microphone even if no visible marks are left.
• When not in use keep the TC20 in its case
Specifications
Frequency response: 10Hz to 20kHz ±2dB
Polar Pattern: Omnidirectional (Fig. 4)
Sensitivity: 8mV/Pa (Typical)
Power Requirements: 48V Phantom, 10mA
Peak Acoustic Input: 145dB SPL
Output: XLR (Fig. 1)
Output Impedance: 100Ω, balanced
(50Ωea. pin 2 & 3)
Minimum Load: 600Ωbtw. pins 2 & 3
Noise: 27dBA equivalent
Dimensions L x D 165 x 22 mm
(6.5 x .860 in.)
Weight: 160g (.35lb)
Compliant
Fig. 1. XLR Output Connector Assignment of TC20
Fig. 2. Frequency Response (Typical) of TC20
Fig. 3. Impulse Response (Typical) of TC20
Fig. 4. Polar Response (Typical) of TC20, 1dB/div.
Specifications are subject to change without
notice.