ART Pro Audio M-Four
Multi-Pattern Tube Condenser Microphone
The M-Four is ART’s flagship microphone. It is a multipattern bottle-style mic with a large-diameter capsule and a tube preamplifier.
The condenser capsule is a 34mm, dual-diaphragm design. The diaphragm diameter is likely 27-28mm.
Two switches on the microphone body provide access to a -10dB pad and a high-pass filter (the slope and crossover points of which have not been published).
The microphone’s amplifier circuit is built around a 12AX7 tube. It is powered by an external power supply, which is a dual-voltage design. A switch on the power supply enables selection of 9 pickup patterns.
The mic’s shockmount appears to have been modeled after the Brauner shockmount. A metal C-clamp mounts to the mic body from behind, and is suspended within a larger C-clamp by elastic bands. This deign grips the mic from the sides and rear, allowing closer positioning of the mic’s face to the sound source.
The M-Four ships in a padded wooden storage box, a dual-voltage power supply, shockmount, and an aluminum flight case.
The mic was introduced at the Summer NAMM show, 2009, and is scheduled for release in August.
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The mic was released in 2009.
Specifications
Pickup Patterns | Pads & Filters |
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Omnidirectional
(12 mV/Pa; 20 - 20,000 Hz) Cardioid (12 mV/Pa; 20 - 20,000 Hz) Bidirectional (12 mV/Pa; 20 - 20,000 Hz) |
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Capsule Dimensions | Impedance | SPL/Noise |
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Capsule diameter: 34mm |
200 Ohms (Low) | Max SPL: 134 dB Self-noise: 20.0 dB(A) |
Weight | Length | Max Diameter | Interface(s) |
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n/a | n/a | n/a |
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Power Specifications |
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