Earthworks TC30K User manual

Technical Support
Should you have any questions regarding your
TC30K 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.
TC30K Omnidirectional Microphone
Owner’s Manual

Description
Earthworks TC30K is an omnidirectional
(pressure) prepolarized condenser microphone
directly coupled to a dedicated wideband, low
output impedance preamplifier. The TC30K
requires a standard 48V phantom power supply.
It features a linear free-field frequency response
from 9Hz to 30kHz (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.
Each microphone is delivered with its own
calibration chart providing the individually
measured frequency response curve. A
mounting clip is included with the microphone.
Applications
Earthworks TC30K 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 TC30K is an excellent general-purpose
omni. It is an ideal choice for close-miking
louder sources like guitar, bass, piano, horns,
and percussion. The TC30K is very popular for
drum overheads. It is incredibly clean and
distortion-free up to 150dB SPL while
simultaneously capturing subtle details. Its fast,
clean impulse performance yields remarkably
transparent sound. The TC30K is an excellent
room mic for ambiance in the studio and for
recording rehearsals and performances. It has
no handling noise, no proximity effect, and is
very forgiving in terms of placement.
This microphone has no removable parts.
Care of Microphones
Earthworks TC30K 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 TC30K:
• 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 TC30K in its case
Specifications
Frequency response: 9Hz to 30kHz +1/-3dB
Polar Pattern: Omnidirectional (Fig. 4)
Sensitivity: 8mV/Pa (Typical)
Power Requirements: 48V Phantom, 10mA
Peak Acoustic Input: 150dB 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 229 x 22 mm
(9 x .860 in.)
Weight: 225g (.5lb)
Compliant
Fig. 1. XLR Output Connector Assignment of TC30K
Fig. 2. Frequency Response (Typical) of TC30K
Fig. 3. Impulse Response (Typical) of TC30K
Fig. 4. Polar Response (Typical) of TC30K, 1dB/div.
Specifications are subject to change without
notice.