Earthworks P30, P30C, P30HC User Manual

P30/C & P30/HC

Periscope High Definition Microphones™

Architectural & Engineering

Specications

30kHz Cardioid & Hypercardioid

The microphone shall be a back-electret con­denser type with a wide-range uniform fre­quency response of 30 Hz to 30 kHz, ±2 dB @
30cm. The microphone shall have an output
level of 10 mV/Pa. The microphone shall be
of a single capsule, single membrane design.
The microphone shall have an impulse re­sponse with the rise time no longer than 25
microseconds, and total settling time, includ­ing the rise time, no longer than 120 micro­seconds. The microphone shall have polar
characteristics uniform in all planes to form a
cardioid of revolution for P30/C and a hyper­cardioid of revolution for P30/HC. The micro­phone shall accept sound pressure levels up
to 139 dB producing no more than 3% THD.
Dimensions shall be 10 in (250mm) long by
.860 in (22mm) diameter. The maximum head
diameter shall be .540 in (14mm) without
the windscreen, and .9 in (23mm) with the
windscreen. The microphone shall be termi­nated with a professional gold-plated 3 pin
XLR connector. The microphone shall require
48V phantom power. The microphone shall be

made of metal with black or white nish. The

Earthworks P30/C

• High Denition Microphone™

• Hear Detail that Other Microphones Miss

• 30Hz to 30kHz Frequency Response

• 139dB SPL Max Acoustic Input

• Flexible 5” Neck with Small Microphone Head

• Small Size is Easier to Get Into Difcult Places

• Position Microphone Without Moving Stand

• Uniform Frequency Response at 0°, 45°& 90°

• Low Handling Noise

• Available in Black or White

• Available in Cardioid or Hypercardioid

P30/C 30kHz Cardioid

P30/HC 30kHz Hypercardioid

Periscope™ High Denition Microphones™

The Earthworks Periscope Series are uniquely de-

signed with a small cardioid head and exible neck
that will allow you to get into difcult places such

as under the strings of a string bass. The Periscope

design also offers more exibility and ease of use

for standard microphone applications. Imagine re­positioning your microphone without having to move
the stand or mic boom. The Periscope’s body can be
pointed straight up and its microphone head can be
pointed nearly straight down in any direction. It is the

ultimate in sound quality and exibility.

High Denition Microphones™

During the last decade digital recording systems offer­ing high sampling rates became widely available. The
96 and 192 kHz systems offer frequency responses
beyond 40kHz, as does the 1-bit SACD format. How­ever, few conventional professional microphones offer
frequency responses extending even to 20kHz. Mak-

ing a High Denition Microphone involves far more

than extending the frequency response. Impulse
response, diaphragm settling time and pristine elec­tronics are also key elements. Earthworks’ founder
David Blackmer foresaw the need for higher quality
microphones, and Earthworks has been offering such

High Denition microphones, with extended frequency

response beyond 40kHz, since 1996. Earthworks

High Denition Microphones™ have an extremely

clean, natural on-axis pickup, and smooth, uncolored
off-axis response with high front-to-back rejection
that makes them superb for a wide range of applica­tions including sound reinforcement, broadcast, and
recording of voice and musical instruments. You will
hear exceptional sound quality that is extremely ac­curate, detailed, open and crystal clear even on 16
bit, 44.1kHz recording systems. Equally astounding is
the audible improvement on analog or digital equipment
that is limited to a 20kHz bandwidth. You can hear a
remarkable improvement on these systems.

Polar Patterns

David Blackmer also invented a totally new approach
to microphone design, resulting in near-perfect po­lar patterns. When you look at a polar pattern of an
Earthworks microphone, the mid frequencies, high
frequencies and low frequencies all look very close
to a “textbook” polar pattern. In practice this means
the polar response of an Earthworks microphone is
extremely uniform over its operating frequency range;
the frequency response at 90 degrees off-axis is very
close to the on-axis response. Such uniform polar re-

sponse results in less phase problems on the sides of
the microphone and there are fewer phase cancella­tions when using multiple mics placed close together.
This new microphone technology also provides more
rejection of unwanted sounds from the rear of the
microphone and more gain before feedback in live
sound applications.

The Periscope™ Series

The Periscope™ High Denition Microphones™ have a

30kHz high frequency response that enables them to
pick up high frequency overtones that conventional mi­crophones miss. In addition, they have an extremely fast
impulse response that allows them to pick up transients
far more accurately. Their exceptionally short diaphragm
settling time will enable you to hear subtle details that
conventional microphones mask. The audible difference

between an Earthworks High Denition Microphone and

conventional microphones is as dramatic as the differ­ence you will see between conventional video and high-

denition video. For more information, please visit our

website at earthworksaudio.com.

Frequency Response:

Power requirements:

Specications

Polar Pattern:

Sensitivity:

Max Acoustic Input:

Output:

Output Impedance:

Min Output Load:

Noise:

Dimensions L x D:

Weight:

P30/C

Polar
Response

Impulse Response

P30/HC

Polar
Response

30Hz to 30kHz ±2dB @ 30cm
Cardioid or Hypercardioid
20mV/Pa (-34dBV/Pa)
48V Phantom, 10mA
139dB SPL
XLR-3 (pin 2+)

65Ω, balanced

(between pins 2 & 3)
600 ohms between
pins 2 & 3
16dB SPL equivalent
(A weighted)
10 x .860 in. (250 x 22mm)

0.22 lb. (100g)

Earthworks, Inc. • 37 Wilton Rd. • Milford, NH 03055 • [phone], ext 114 • email: [e-mail] • ear thworksaudio.com