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Mods for the HSGT-2B

  • Advanced Audio MicrophonesAdvanced Audio Microphones
    Dave’s mods to the HST-2b (and rebadged equivalents such as the Nady TCM-1050) include a tube swap (discard the 12AX7, install 12AT7 or 6072a/12AY7), a transformer swap (e.g. the Cinemag CM-2461 provides 12dB more headroom and 3dB more gain than the stock unit), and a Peluso CEK-367 capsule, plus circuitry changes.
  • Microphone PartsMicrophone Parts
    The Alctron “2B”/Nady TCM-1050 use a K67-style large-diaphragm capsule, which in the absence of appropriate downstream equalization produces an exaggerated, hyped HF response. Revoice these over-bright microphones easily by swapping the stock capsule for the RK-47, a true single-backplate 34mm condenser capsule modeled after Neumann’s famed K-47.

Ningbo Alctron Electronics Co., Ltd. HSGT-2B

Pricing & Availability

  • MSRP: n/a

Tags

HSGT-2B Documentation

9 polar patternsNingbo Alctron Electronics Co., Ltd. HSGT-2B

Multi-Pattern Tube Condenser Microphone

The HSGT-2B is a large-diaphragm, multipattern tube mic, made in China by Alctron and sold under a variety of familiar brand names.

The specs claim the tube is a selected 6072/12AT7, but is more commonly a 12AX7 which has different characteristics and is arguably a poor fit for the mic’s schematic — leading to the common and easy mod of replacing the tube (assuming it’s socketed) with a true 6072/12AY7.

The mic ships with a power supply, 7-pin cable, spider shockmount, foam windscreen, and an aluminum road case.

Note that Alctron’s published frequency-response graphs for this mic are identical to the HST-11A, and in fact to most of their large-diaphragm tube condensers.

The Ningbo Alctron Electronics Co., Ltd. HSGT-2B is also known as: HST-2B, GT-2B, HSGT2B.

Specifications

Frequency Response - OmnidirectionalClick Graph to Compare!
HSGT-2B Omnidirectional Frequency Response Chart
Frequency Response - CardioidClick Graph to Compare!
HSGT-2B Cardioid Frequency Response Chart
Frequency Response - BidirectionalClick Graph to Compare!
HSGT-2B Bidirectional Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (15.8 mV/Pa; 20 - 20,000 Hz)
Cardioid (15.8 mV/Pa; 20 - 20,000 Hz)
Bidirectional (15.8 mV/Pa; 20 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 25mm
Capsule diameter: 32mm
 200 Ohms (Low) Max SPL: 118 dB
Self-noise: 22.0 dB(A)
Weight Length Max Diameter Interface(s)
800g (28.22oz) 180mm (7.09'') 60mm (2.36'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

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