Concrete Cellar has been experimenting with custom studio/music equipment electronic design and boutique manufacturing of guitar effect pedals and now large diaphragm condenser microphones aimed at the project, home studio and voice over market. Each microphone is custom and hand made using various capsules. Microphones shown are prototypes.
The TLC47 is a transformerless large diaphragm condenser microphone build around the K47 capsule. This capsule is known to be less harsh common capsules used in many inexpensive studio microphones aimed at the home studio market. It has a musical presence peak in the 2-4 KHz range that can help make some vocalists be more present in the mix. The aluminum and 2” diameter steel body with custom two-layer grille screen, make for a very robust microphone.
The TLC87 shares the same transformerless circuit design of the TLC47 with the addition of some compensation EQ to flatten the hyped 15 kHz response of the typical K87 capsule. For those that prefer microphones that utilize the K87 capsule this is a good choice. Many find it more defined and articulate in bass frequencies. The TLC87 is built into a sleek 1.75” custom made steel/aluminum body.
This variation utilizes a generic U87 style body, a C12 style capsule and the same circuitry as above.
This microphone utilizes a very basic schoeps transformerless circuit and the JLI-2555 electret capsule popular with DIY microphone builders. Works surprisingly well!