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OmnidirectionalCardioidBidirectionalCharterOak Acoustic Devices E700

Multi-Pattern Condenser Microphone

The E700 is a multipattern FET condenser with a large-diaphragm capsule. Switches on the microphone body provide a 3-way pad and three pickup patterns: Cardioid, Omnidirectional, Figure-8.

The capsule is a 1.22'' (31mm), center-terminated design with dual 6-micron Mylar diaphragms. CharterOak’s internal designation for this capsule is “S-4.” The capsule is not used in any other CharterOak microphone.

The output circuit is transformer-coupled. Although the first 11 units shipped with an imported Chinese transformer, all subsequent E700s employ a US-made transformer.

The mic’s steel and brass casings are sourced from Asia. All blasting and plating work is done in the US.

The two PCBs are currently made in Asia, but populated in the US using CharterOak’s selected components.

Beginning in 2011, all CharterOak microphone PCB manufacturing will be transitioned to the US.

SoundOnSound, 2008

As a vocal mic, the E700 has a definite character that flatters the sound of most singers by adding a sense of density, warmth and air, but without becoming too brittle at the high end. Some users have likened it to a warmer, less toppy-sounding AKG C414

In comparison with the SE 2200A… the E700 has a rather more open sound on vocals… but at the same time it has a smoother high end and more apparent low end.

Resolution, 2006-05

[T]he E700 was compared to an Audio-Technica 4050, which can deliver stonking [sic] results on most voices straight out of the box. The E700 sounded a little less mellow than the 4050, but used up close has terrific presence and depth — a definitely large-than-life vocal sound…

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Frequency Response - CardioidClick Graph to Compare!
E700 Cardioid Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (16 mV/Pa; 25 - 20,000 Hz)
Cardioid (16 mV/Pa; 25 - 20,000 Hz)
Bidirectional (16 mV/Pa; 25 - 20,000 Hz)
  • Pad: -10dB (Via Switch)
  • Pad: -20dB (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Capsule diameter: 31mm
Diaphragm gauge: 6 microns
200 Ohms (Low) Max SPL: 125 dB
Self-noise: 17.0 dB(A)
Weight Length Max Diameter Interface(s)
n/a n/a n/a
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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