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The CharterOak M900T small diaphragm condenser microphone is the vacuum tube version of our popular M900.
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The Charteroak m900t is quite an impressive tube pencil microphone. The m900t's frequency spectrum is incredible, providing a full bottom end, a detailed mid range, and a smooth high end that eliminates the harsh qualities found in other tube pencil mics. We found the m900t to shine on drum overheads and acoustic guitar, yielding a tone full of harmonic information yet still crisp and defined.
The CharterOak M900T small diaphragm condenser microphone is the vacuum tube version of our popular M900. It is excellent in situations where flat frequency response, excellent transient response, and robust and detailed sound are required.
The CharterOak M900T is a small diaphragm condenser microphone, which employs a vacuum tube head amplifier and Cinemag 2480 output transformer. The microphone utilizes modified versions of our S-5 (cardioid), S-6 (hyper-cardioid), and S-7 (omni-directional) capsule types. All three of these capsules are shipped with each M900T head amplifier, and are easily interchangeable. Sequentially numbered matched pairs are available for stereo recording. The M900T is equipped with a 15dB pad facility, and a 6dB per octave bass roll off at 75Hz. It is delivered in a hard locking flight case with a windsock, shock-mount, and custom power supply, and is guaranteed for life.
Appropriate uses for the CharterOak M900T are acoustic instruments, amplified guitars and bass, percussion, stringed instruments, piano, and ambient room recording etc.
The microphones are delivered with a lifetime warranty on all parts and labor and easy access to factory technical support.
CharterOak Acoustic Devices is quickly becoming an industry leader for professional quality recording products for today's musicians and audio engineers. Developed in 2002, CharterOak has independent offices in the US, Canada and the UK and is headquartered in the cozy suburbs of Connecticut. CharterOak was founded by producer/engineer, Michael Deming (Lily's, Pernice Brothers, Mike Ireland) from the need to obtain more control with his studio recordings. Our goal is not to emulate the classics of yesterday but to create the classics of tomorrow. Each CharterOak product is assembled & inspected by hand and tested in the studio before they ship to the customer. Sonic integrity, extreme durability, design simplicity, and serviceability are fundamental values upon which all CharterOak products are built. While our product line continues to grow and receive praise, CharterOak will continue to provide hi quality affordable recording device solutions.
Acoustical Operating Principle | Pressure Gradient |
Diaphragm | 20mm |
Frequency Response | 25Hz-20kHz |
Sensitivity | -34dB (0dB=1V/Pa) |
Polar Pattern | Interchangeable via modified S-5, S-6, and S-7 capsules. |
Impedance | < 200 Ohms |
Recommended Load | > 200 Ohms |
Equivalent Input Noise | 13.5dB (A Weighted) |
Maximum Sound Pressure Level | 138dB (1kHz at 138dB causes 0.5% Total Harmonic Distortion) |
Power Requirements | Proprietary Power Supply |
Power Supply Requirements | 115-230VAC |