Subscribe via RSS
Search
Bookmark/Share this Mic
Theoretically Similar Mics
side-address large-diaphragm dual-diaphragm tube multipattern 12ax7 condenser hpf
Specifications and Reviews
Related Microphones
TNC Audio ACM-1200
MSRP: $110 Multi-Pattern Condenser Tube Microphone
Description
The ACM-1200 is a multipattern tube mic in the C12 style. It is a rebadged ShuaiYin SYT1200; the circuit board inside is labeled SYT-1200A.
Switches on the mic body provide access to a -10dB pad and a high-pass filter (frequency and slope not specified). A switch on the power supply provides access to 9 polar pickup patterns.
Under the microphone body is a two-sided circuit board with discrete components and a socketed 12AX7A tube.
The large-diaphragm capsule has two center-terminated membranes that appear to be about 25mm in diameter. They are protected by three layers of screening; the headbasket is constructed of two layers of medium-gauge metal mesh with a middle layer of fine-gauge wire screen sandwiched in between.
The included elastic shockmount is lightweight (195g) but surprisingly effective. The mic is held by a spring-loaded padded ring that is much faster to operate than screw-mount designs (at the possible risk of being less secure, especially over time).
The mic ships in a padded flightcase with the shockmount, foam windscreen, a vinyl storage pouch for the microphone, dedicated power supply with pattern selection switch, and a microphone cable.
TnC and Terry Manning’s Lucas Engineering have announced the availability of upgraded transformers and circuits for the ACM-1200:
- Transformer model T14-1200 ($75) - Drop-in replacement for stock ACM-1200.
- Transformer model T14-C12 ($75) - Replacement transformer for ACM-1200, to be coupled with the custom C12-based electronics PC board upgrade (based on Oliver Archut’s design parameters for his C12VR upgrade electronics).
- Transformer model T47 ($85) - Replacement transformer for ACM-1200 with U47-like transformer characteristics (BV8), to be coupled with the custom “47” electronics PC board upgrade (based on a simplified 47-inspired electronics circuit).
- Transformer model T49 ($85) - Replacement transformer for ACM-1200 with UM49-like transformer characteristics, to be coupled with the custom “49” electronics PC board upgrade (based on a simplified 49-inspired electronics circuit).
- Transformer model T67 ($90) - Replacement transformer for ACM-1200 with U67-like transformer characteristics, to be coupled with the custom “67” electronics PC board upgrade (based on a simplified 67-inspired electronics circuit).
Terry Manning
The T14-1200 transformers are based on the Hiller T14-C12 transformer (ratio 12 to 1), as used in early C12 mics, but have the ratio of 9 to 1 as used in the stock ACM-1200.
The 47-49-67 transformers are based on a Neumann-inspired transformer. They come in the three different ratios of 6:1 for 47-styled electronics, 10:1 for 49-styled electronics, and 7:1 / with feedback winding for 67-styled electronics.
As of November, 2008, the ACM-1200 circuit upgrades were being designed by Lucas Engineering technicians; no release date has been announced (as of June, 2009).
The TNC Audio ACM-1200 is also known as: ACM1200.
The mic was released in 2008.
| Pickup Patterns | Pads & Filters |
|---|---|
|
Cardioid
(20 mV/Pa; n/a) |
|
| Capsule Dimensions | Impedance | SPL/Noise |
|---|---|---|
| Diameter n/a |
200 Ohms (Low) | Max SPL: 134 dB |
| Weight | Length | Max Diameter | Interface(s) |
|---|---|---|---|
| 660g (23.28oz) | 237mm (9.33'') | 46mm (1.81'') |
|
| Power Specifications |
|---|
|
Did we get anything wrong on this page?
Please let us know!