Earthworks TC30 Owner's Manual

Description
Earthworks TC30 is an omnidirectional
(pressure) prepolarized condenser microphone
directly coupled to a dedicated wideband, low
output impedance preamplifier. The TC30
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 TC30 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 TC30 is an excellent general-purpose
omni. It is an ideal choice for close-miking
louder sources like guitar, bass, piano, horns,
and percussion. The TC30 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 TC30 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 TC30 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
TC30:
• 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 TC30 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
(50Ω ea. pin 2 & 3)
Minimum Load: 600Ω btw. 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 TC30
Fig. 2. Frequency Response (Typical) of TC30
Fig. 3. Impulse Response (Typical) of TC30
Fig. 4. Polar Response (Typical) of TC30, 1dB/div.
Specifications are subject to change without
notice.

Earthworks TC30 Specifications

Frequency and Sensitivity

frequency response	9Hz to 30kHz +1/-3dB
sensitivity	8mV/Pa (Typical)
noise	26dB, A equivalent

Power Requirements

power requirements	24-48V Phantom, 10mA

Acoustic and Output

peak acoustic input	150dB SPL
output impedance	65Ω, balanced between pins 2 & 3
minimum load	600Ω btw. pins 2 & 3

Weight and Dimensions

dimensions	229 x 22 mm (9 x .860 in.)
weight	225g (.5lb)