Earthworks Audio QTC40 User manual

For more information, please visit
www.earthworksaudio.com or call 1-603-654-2433.
OMNIDIRECTIONAL MICROPHONE FOR QUIET SOURCES
QTC40

1 Earthworks QTC50
1 Microphone Clip
1 Calibration Chart
YOUR PURCHASE INCLUDES
Thank you for purchasing the
Earthworks QTC40 Omnidirectional Microphone!
Before setting up the microphone, pull back all existing settings and EQ. By doing this, you will have a
baseline understanding of how our microphones sound, and will then be able to adjust accordingly.
Begin by removing all included components from the packaging. Make sure to mute any incoming
signal to speakers or headphones to avoid any loud “pops” when connecting.
Connect the microphone to an audio interface supplying 24-48V phantom power using a standard
XLR cable. Because of the microphone’s larger capsule size, please allow one minute for the
microphone to settle. (Plugging in the microphone while phantom power is turned on will not damage
the microphone, and will actually settle the microphone faster.)
To guarantee your microphone provides years of performance, follow these guidelines:
• 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 when bringing it
in from the cold.
• Rough handling may damage the microphone even if no markings are visible.
• When not in use, keep the microphone in its case.
GETTING STARTED
PROPER
MAINTENANCE
The small tip on many of our microphones allows them to capture the highest frequencies of
your sound. Please be gentle and considerate when handling the microphones with these tips.
(Microphones such as the SR314 and SR40V shield the tip within their capsule, and are thus
more durable.)
IMPORTANT
NOTICE

SPECIFICATIONS QTC40
Frequency Response 3Hz to 40kHz +1/-3dB
Polar Pattern Omnidirectional
Sensitivity 34mV/Pa (Typical)
Power Requirements 24-48V Phantom, 10mA
Peak Acoustic Input 140dB SPL
Output XLR-3
Output Impedance 65Ω, balanced between pins 2 & 3
Minimum Output Load 600Ω, balanced between pins 2 & 3
Noise 20dB SPL (A weighted)
Dimensions 229 x 22 mm (9 x .860 in.)
Weight 225g (.5lb)
WARRANTY All Earthworks® products carry a limited warranty (parts and labor). Please register your warranty at:
earthworksaudio.com/register. If you have any problems with your Earthworks products, please contact our
warranty/repair department by email at: [e-mail].
NOTE: This warranty only applies to Earthworks microphones purchased brand new. For microphones purchased/
received second-hand, please contact us via our website.
37 Wilton Rd. Milford, NH 03055
[phone]
[e-mail]
earthworksaudio.com
© 2020 Earthworks, Inc
If you encounter issues while using your Earthworks Audio microphone, please make sure that:
• Your microphone is connected to an active power supply.
• Phantom power is being supplied to the microphone.
• Your microphone and XLR cable are well connected.
• The microphone is positioned at an appropriate distance from the sound source.
• External noise in your recording environment is kept to a minimum.
• Your recording space is at room temperature and free of dust.
If your issue persists after checking, please contact us via our website.
TROUBLESHOOTING
WE'RE HERE TO
HELP
For anything else, we're a phone call or email away. Please feel free to contact us by email at sales@
earthworksaudio.com, or by phone at (603)-654-2433.