The MA-300 is a multi-pattern large diaphragm, vacuum tube condenser microphone. Based upon the widely accepted MA-200 designed by David Royer, the MA-300 adds a continuously variable pickup pattern selector, 15dB pad and a switchable bass roll-off. The MA-300 gives warm, full-bodied reproductions of vocals and instruments, with none of the shrillness and high frequency distortion artifacts that are often encountered with modern condenser microphones.

Utilizing hand-selected, double diaphragm 3-micron capsules, high-quality Jensen audio transformers and military-grade JAN 5840 vacuum tubes, the MA-300 performs at a level reminiscent of some of the best loved classic condenser microphones. The MA-300 power supply can be set for 115V and 230V, 50 or 60 Hz, through an internal switch (100V is also available). Each MA-300 microphone, power supply and cable set is burned in for 24 hours, carefully tested and evaluated, then packaged in its protective case-within-a-case.

Features:

• Remotely controlled, continuously variable polar pattern selector
• Switchable 15dB pad
• Switchable Bass Roll-off
• Hand-selected 3-micron double diaphragm capsule
• Jensen audio transformer
• Military grade JAN 5840 vacuum tube
• Internal switchable power supply voltage
• Ultra clean signal path

Recommended applications:

Use anywhere you would use an expensive, large diaphragm tube microphone.

• Vocals
• Voice Over and Broadcast
• Acoustic Instruments
• Piano
• Drum Overheads, Drum Rooms
• Orchestral Recording
• Choral Recording

TECHNICAL DATA

TRANSDUCER TYPE: Externally polarized, pressure gradient capacitor - double diaphragm.

DIAPHRAGM: 1-inch diameter, gold sputtered

DIAPHRAGM THICKNESS : 3-microns

POLAR RESPONSE: Continuously variable from omnidirectional to figure-eight.

FREQUENCY RESPONSE: 20 Hz to 20 KHZ, +/-3 dB at "flat" setting of bass cut switch. Bass cut switch provides 6 dB per octave attenuation below 100 Hertz in "cut" setting

SENSITIVITY: -37dB re 1V/pa

MAXIMUM SPL: 120 dB with pad off, 135 dB with pad on.

DISTORTION:< 1% @ 117 dB SPL , < 3% @ 125 dB SPL with pad off, < 1% @ 132 dB SPL, < 3% @ 140 dB SPL with pad on

SELF NOISE: 14db nominal, not to exceed 16db (A Weighted)

PAD: 15 dB

BASS CUT: 6 dB per octave below 100 hertz.

DIMENSIONS AND WEIGHT:
Carrying case with microphone, power supply, shock mount
and cables: 13 lbs.
Microphone: 7 5/8" X 2", 1 lb.

POLAR PATTERN

FREQUENCY RESPONSE