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OmnidirectionalCardioidHypercardioidAvantone Pro CV-28

Detachable-Capsule Pencil Tube Condenser Microphone

The CV-28 is a small-diaphragm tube condenser with three interchangeable capsules providing three pickup patterns: cardioid, omni, and hypercardioid. Unlike related multipattern SDCs, only the internal capsule is changed — the external grille assembly must be removed first, to expose the threaded capsule head.

The diaphragm in these capsules measures 6 microns in thickness, with an approximate diaphragm diameter (measured by us within the inside diameter of the trim ring at the top of the capsule assembly) of 17mm.

CV-28 CircuitThe microphone shares exterior metalwork with a few other models, such as the Advanced Audio CM-28, the Groove Tubes GT44, and the Sterling ST44. However, the GT44 and ST44 circuits differ considerably from the CV-28. Further, the capsule mounting platform on the ST44/GT44 is slightly different than the CV-28.

The tube is a 6J1B, a Chinese-made tube sourced by the manufacturer. The transformer is also of Chinese origin.

The mic includes a padded wooden box, suspension shockmount, dedicated power supply, power cable, 3 interchangeable capsules (omni, cardioid, hypercardioid) within a plastic pillbox, an aluminum flightcase, and a 5-year warranty.

The Avantone Pro CV-28 is also known as: CV28.

The mic was released in 2006.

Specifications

Compatible Capsules
Avantone Pro CV-28 CardioidCardioid Avantone Pro CV-28 Cardioid
17mm Cardioid capsule
Sensitivity: 20 mV/Pa
Freq. Resp.: 20 - 20,000 Hz
MSRP: n/a | Still In Production
Avantone Pro CV-28 HypercardioidHypercardioid Avantone Pro CV-28 Hypercardioid
17mm Hypercardioid capsule
Sensitivity: 20 mV/Pa
Freq. Resp.: 20 - 20,000 Hz
MSRP: n/a | Still In Production
Avantone Pro CV-28 OmniOmnidirectional Avantone Pro CV-28 Omni
17mm Omnidirectional capsule
Sensitivity: 20 mV/Pa
Freq. Resp.: 20 - 20,000 Hz
MSRP: n/a | Still In Production
Pads & Filters Impedance SPL/Noise
  • Pad: -15dB (Via Switch)
  • Filter: HPF @ 80 Hz (Via Switch)
250 Ohms (Low) Max SPL: 136 dB
Self-noise: 17.0 dB(A)
Weight Length Max Diameter Interface(s)
280g (9.88oz) 194mm (7.64'') 28mm (1.10'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

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