LEWITT LCT 550

The LCT 550 is the first and only large-diaphragm studio microphone ever to achieve 0 dB-A self-noise*, and thus the world’s quietest. That makes it possible to capture even extremely weak signals with great precision and detail.

The Austrian-developed LCT 550 sets new standards in terms of more than just self-noise. A dynamic range of 140 dB-A guarantees the best-possible results even in challenging settings. The three pre-attenuation levels (0 dB, -6 dB and -12 dB) increase maximum SPL to as high as 155 dB-A. The LCT 550 also offers a clipping history as well as an auto-attenuation mode that automatically switches to the next level of attenuation if the signal is too strong. For the elimination of structure-borne noise, there are two high-pass filters: 80Hz, 12dB/octave and 160Hz, 6dB/octave.

Manufacturing tolerances have been minimized thanks to highly precise calibration of the capsule and the electronics – which means that any two microphones from this series, set identically, will always form a matched pair at +/- 0 dB!

* 0dB-A electronics only, 3 dB-A according to IEC 60268-1 due to Brownian motion (in simple terms: the sound caused by the movement of air molecules ...)

Features and Applications

0 dB-A self-noise from electronics and circuitry* Highly precise calibration of the capsule and the electronics – any two microphones from this series, set identically, will always form a matched pair at +/- 0 dB 1-inch dual system externally biased capsule with an active front and ultra-thin, gold-layered low mass diaphragm for superior transient response Tailored frequency response for rich and authentic sound on stage or in the studio Cardioid polar pattern for effective isolation of the main sound source Noiseless push buttons for attenuation and HPF selection Max SPL of 143 dB for an impressive total dynamic range of 140 dB 3-position switchable pre-attenuation pad (0 dB, 6 dB, and 12 dB) for handling extremely high soundw pressure levels and 3-position high-pass filter Illuminated user interface for quick and easy handling even in dark environments Noiseless pushbuttons for quick and easy attenuation and HPF selection Clipping history, automatic attenuation and key-lock provide error-free recording and unparalleled ease of use

Gold-plated 3-pin XLR output connector Immune to electromagnetic interference thanks to transformerless preamplifier circuitry Extra-large hexagonal ruthenium-galvanized steel-mesh grille provides an open acoustic environment and prevents unwanted internal reflections Comes in a black carrying case; includes LCT 40 SHx shock mount, LCT 40 Wx windshield and DTP 40 Lb artificial leather bag

Tech Data

Acoustical operating principle pressure gradient transducer, externally polarized

Transducer O 25.4 mm

1 inch

Polar pattern cardioid

Frequency range 20 ... 20.000 Hz

Sensitivity 36 mV / Pa (-29 dBV)

Signal / noise ratio 91 dB-A

Equivalent noise level 0 dB-A, electronics only,

3 dB-A, according to IEC 60268-1 due to Brownian Motion

Dynamic range of FET mic. Amp. 140 dB-A

Max. SPL for 0,5 % THD

143 dB, 0 dB pre-attenuation

149 dB, 6 dB pre-attenuation

155 dB, 12 dB pre-attenuation

Pre-attenuation pad 6 dB

12 dB

switchable

Bass cut filter slope 12 dB / octave at 80 Hz

6 dB / octave at 160 Hz

Rated impedance < 150 ohms

Rated load impedance > 1.000 ohms

Supply voltage 48 V +/- 4 V

Current consumption 5.5 mA

Connector gold plated 3-pin XLR

Dimensions 158 x 52 x 36 mm,

6.22 x 2.04 x 1.42 inch

Net weight 425 g

14.9 oz.