Search Microphones

Share This Page

Mods for the CTM100

  • Microphone PartsMicrophone Parts
    MicParts offers a full suite of upgrades for the Apex 460 (and all other rebadged Alctron T11A microphones): C12 style grilles, upgraded K47, K67/K87, and CK12 style capsules, and two different circuits.

    The “Fox 460” circuit is a massively upgraded CCDA topology, including a selected 6072 tube, custom-wound transformer, and a third-generation circuit made with the best parts on the market.

    The “V-251” circuit is a single triode design with a T14 transformer.

    Read more about Apex 460 upgrade options.

Carvin Corporation CTM100

Pricing & Availability

  • MSRP: $260
  • Discontinued


Reviews & News

CTM100 Documentation

9 polar patternsCarvin Corporation CTM100

Multi-Pattern Tube Condenser Microphone

The Carvin CTM100 is an Alctron HST-11a, manufactured in China and available in the US and Europe under numerous brand names.

CTM100It is a 9-pattern tube mic with included power supply and shockmount. As do all the rebadged HST-11a mics, the CTM100 responds well to modification; search the web for “Apex 460 mod” to find relevant message-board discussions, or see our Apex 460 page for a starter list of common mods.

Because Carvin has not supplied frequency-response graphs for the CMT100, the graphs below are from the HST-11A.

Permalink: Carvin Corporation CTM100


Frequency Response - OmnidirectionalClick Graph to Compare!
CTM100 Omnidirectional Frequency Response Chart
Frequency Response - CardioidClick Graph to Compare!
CTM100 Cardioid Frequency Response Chart
Frequency Response - BidirectionalClick Graph to Compare!
CTM100 Bidirectional Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (25 mV/Pa; 20 - 20,000 Hz)
Cardioid (25 mV/Pa; 20 - 20,000 Hz)
Bidirectional (25 mV/Pa; 20 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 26mm
300 Ohms (Low) Max SPL: 125 dB
Weight Length Max Diameter Interface(s)
824g (29.07oz) 240mm (9.45'') 46mm (1.81'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

Did we get anything wrong on this page? Please let us know!