recordinghacks

CharterOak Acoustic Devices M900

Detachable-Capsule Pencil Condenser Microphone

The M900 is a small-diaphragm condenser mic with three detachable capsules, providing omni, cardioid, and hypercardioid pickup patterns. The preamp body is equipped with a 3-position pad (flat, -10dB, -20dB) and 3-position filter.

Although the capsules are visually similar to those used on the tube version of this mic (the M900T), the capsules are not interchangeable across the two head amps; the various capsules are sourced from different manufacturers, and in some cases require different polarization voltages.

The output circuit is transformerless. The M900 is the only transformerless microphone in CharterOak’s product line, as of late 2010.

The mic has a lifetime warranty on all parts and labor.

The CharterOak Acoustic Devices M900 is also known as: M-900.

Specifications

Compatible Capsules

CharterOak Acoustic Devices S-5 20mm Cardioid capsule Sensitivity: 10 mV/Pa Freq. Resp.: 30 - 20,000 Hz MSRP: n/a | Still In Production CharterOak Acoustic Devices S-6 20mm Hypercardioid capsule Sensitivity: 10 mV/Pa Freq. Resp.: 30 - 20,000 Hz MSRP: n/a | Still In Production CharterOak Acoustic Devices S-7 20mm Omnidirectional capsule Sensitivity: 10 mV/Pa Freq. Resp.: 30 - 20,000 Hz MSRP: n/a | Still In Production

Pads & Filters	Impedance	SPL/Noise
Pad: -10dB (Via Switch) Pad: -20dB (Via Switch) Filter: HPF: -3dB @ 150 Hz (Via Switch) Filter: HPF: -6dB @ 75Hz (Via Switch)	200 Ohms (Low)	Max SPL: 137 dB

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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