Specifications (see Note 1)

• Microphone Type: tetrahedral, single-point Ambisonics surround sound
• Raw capsule information:
  • Number: four
  • Medium-sized diaphragm: ~12 mm
  • Pattern: cardioid
  • Type: electret condensor
• TetraMic pattern: variable, selected at decode
• Capsule ordering and channel assigment (the "front" of TetraMic is indicated by the "Core" logo; the "left/right" assignment is based on viewing the TetraMic capsule from its rear):
  • Channel 1: LFU (left/front/up)
  • Channel 2: RFD (right/front/down
  • Channel 3: LBD (left/back/down
  • Channel 4: RBU (right/back/up)
• Capsules tested, selected and matched into sets, with calibration data supplied to "VVMic for TetraMic" decode software
• Frequency response:
  • Raw: 40 Hz - 18.5 KHz +/- 4 dB
  • Corrected: 30 Hz - 18.5 KHz +/- 2 dB
• Self noise: 19 dBA per capsule. Self noise can decrease or increase depending on selected decode
• Phase: non-inverting when used with the Phantom Power Adapter 2 (shipped with all orders after December 1, 2009; inverting when used with the original Core Sound PPA
• Maximum SPL per capsule: 135 dB
• Sensitivity per capsule: 7.0 mV/Pa nominal (-43 re: 1V/Pa)
• Output connector:
  • compatible with Switchcraft TB6M (mates with TA6F)
  • breaks out via breakout cable to four 3-pin mini-XLR plugs (P3), compatible with Switchcraft TA3F
• Power:
  • 4.5 to 6 VDC into breakout cable's 3-Pin mini-XLR plugs
  • 48 Volt Phantom Power with optional PPA2 (Phantom Power Adapter 2)
  • approximately 15 mA @ 48 VDC total (3.5 mA per capsule) when using PPA2
  • If 48V is not available, each PPA2 can be powered by a single AA battery
• Shaft diameter: 1/2-inch (12 mm)
• Weight: 3 ounces (85 grams)

Note 1: Using TetraMic with power supplies other than those provided by Core Sound will void all performance specifications.

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