Lewitt LCT 550
Large-Diapragm Condenser Microphone with 0 dB Self-Noise

OUR PART #  AMS-LCT-550

Lewitt AMS-LCT-550 - Full PackageLewitt AMS-LCT-550 - Windscreen Detail
Lewitt AMS-LCT-550 - Closeup View of Shock MountLewitt AMS-LCT-550 - Side ViewLewitt AMS-LCT-550 - Shock Mounted View
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The first and only large-diaphragm studio microphone ever to attain 0 dB (A) self-noise*, Lewitt's LCT 550 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. Its 140 dB (A) dynamic range of guarantees the best-possible results – even in challenging environments. It has 3 pre-attenuation levels (0 dB, -6 dB and -12 dB) that increase maximum SPL to as high as 155 dB (A). It 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 2 high-pass filters: 80 Hz, 12 dB/octave and 160 Hz, 6 dB/octave. Manufacturing tolerances have been minimized thanks to highly precise calibration of the capsule and the electronics – meaning any 2 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 ...)

Ideal applications:

  • Classical instruments and ensembles
  • Ambitious stereo recording techniques (XY, ORTF, AB, etc.)
  • Vocals & background vocals
  • Acoustic instruments (strings, guitars, piano)
  • Overhead miking (drums & percussion)

Lewitt LCT 550 Includes:

  • LCT 550 microphone
  • LCT 40 SHx shock mount
  • LCT 40 Wx foam windscreen
  • DTP 40 Lb cushioned leatherette bag
  • Durable carry case

Lewitt LCT 550 Features:

  • Highly precise calibration of capsule and electronics—any 2 microphones from this series will always form a matched pair at +/- 0 dB
  • Precise transient response thanks to the 3-micron-thin, gold-layered, low-mass, 1" Mylar diaphragm
  • Extraordinary sensitive: capture even extremely weak signals with great precision and detail
  • Cardioid polar pattern for effective rear sound rejection
  • 0 dB (A) self-noise from electronics and circuitry *
  • 140 dB dynamic range Max. SPL of 155 dB (A)
  • Immune to electromagnetic interference thanks to transformerless preamplifier circuitry
  • Illuminated user interface for quick and easy handling in dark environments
  • Noiseless pushbuttons for attenuation and low-cut selection
  • Automatic Attenuation and Clipping History mode
  • Rugged zinc die-cast body
  • Internal shock mount for maximum reduction of structure-borne noise
  • Corrosion-resistant gold-plated 3-pin XLR output connector

Lewitt LCT 550 Specifications:

  • Acoustical operating principle: pressure gradient transducer, externally polarized
  • Diaphragm: 3 micron gold-sputtered Mylar
  • Transducer Ø: 1" (25.4mm)
  • Polar pattern: Cardioid
  • Frequency range: 20 Hz to 20 kHz
  • Sensitivity: 36 mV / Pa (-29 dBV), +/- 0 dB @ 1 kHz
  • Signal / noise ratio: 91 dB (A)
  • Equivalent noise level: 0 dB (A) self-noise from electronics and circuitry
  • Dynamic range of FET mic. Amp.: 140 dB (A)
  • Max. SPL for 0.5 % THD: 143 dB, 0 dB pre-attenuation
  • Pre-attenuation pad, switchable:
    • 0
    • -6 dB
    • -12 dB
  • Low cut filter:
    • Linear
    • 80 Hz (12 dB/oct)
    • 160 Hz (6 dB/oct)
  • Rated impedance : 150 ohms
  • Rated load impedance: 1,000 ohms
  • Supply voltage: 48 V +/- 4 V
  • Current consumption: 5.5 mA
  • Enclosure: Zinc die cast
  • Connector: Gold-plated 3-pin XLR
  • Dimensions: 6.22" x 2.04" x 1.42" (158 x 52 x 36mm)
  • Net weight: 14.9 oz. (425 g)

Lewitt LCT 550
Large-Diapragm Condenser Microphone with 0 dB Self-Noise

OUR PART #  AMS-LCT-550

Product Information:

The first and only large-diaphragm studio microphone ever to attain 0 dB (A) self-noise*, Lewitt's LCT 550 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. Its 140 dB (A) dynamic range of guarantees the best-possible results – even in challenging environments. It has 3 pre-attenuation levels (0 dB, -6 dB and -12 dB) that increase maximum SPL to as high as 155 dB (A). It 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 2 high-pass filters: 80 Hz, 12 dB/octave and 160 Hz, 6 dB/octave. Manufacturing tolerances have been minimized thanks to highly precise calibration of the capsule and the electronics – meaning any 2 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 ...)

Ideal applications:

  • Classical instruments and ensembles
  • Ambitious stereo recording techniques (XY, ORTF, AB, etc.)
  • Vocals & background vocals
  • Acoustic instruments (strings, guitars, piano)
  • Overhead miking (drums & percussion)

Lewitt LCT 550 Includes:

  • LCT 550 microphone
  • LCT 40 SHx shock mount
  • LCT 40 Wx foam windscreen
  • DTP 40 Lb cushioned leatherette bag
  • Durable carry case

Lewitt LCT 550 Features:

  • Highly precise calibration of capsule and electronics—any 2 microphones from this series will always form a matched pair at +/- 0 dB
  • Precise transient response thanks to the 3-micron-thin, gold-layered, low-mass, 1" Mylar diaphragm
  • Extraordinary sensitive: capture even extremely weak signals with great precision and detail
  • Cardioid polar pattern for effective rear sound rejection
  • 0 dB (A) self-noise from electronics and circuitry *
  • 140 dB dynamic range Max. SPL of 155 dB (A)
  • Immune to electromagnetic interference thanks to transformerless preamplifier circuitry
  • Illuminated user interface for quick and easy handling in dark environments
  • Noiseless pushbuttons for attenuation and low-cut selection
  • Automatic Attenuation and Clipping History mode
  • Rugged zinc die-cast body
  • Internal shock mount for maximum reduction of structure-borne noise
  • Corrosion-resistant gold-plated 3-pin XLR output connector

Lewitt LCT 550 Specifications:

  • Acoustical operating principle: pressure gradient transducer, externally polarized
  • Diaphragm: 3 micron gold-sputtered Mylar
  • Transducer Ø: 1" (25.4mm)
  • Polar pattern: Cardioid
  • Frequency range: 20 Hz to 20 kHz
  • Sensitivity: 36 mV / Pa (-29 dBV), +/- 0 dB @ 1 kHz
  • Signal / noise ratio: 91 dB (A)
  • Equivalent noise level: 0 dB (A) self-noise from electronics and circuitry
  • Dynamic range of FET mic. Amp.: 140 dB (A)
  • Max. SPL for 0.5 % THD: 143 dB, 0 dB pre-attenuation
  • Pre-attenuation pad, switchable:
    • 0
    • -6 dB
    • -12 dB
  • Low cut filter:
    • Linear
    • 80 Hz (12 dB/oct)
    • 160 Hz (6 dB/oct)
  • Rated impedance : 150 ohms
  • Rated load impedance: 1,000 ohms
  • Supply voltage: 48 V +/- 4 V
  • Current consumption: 5.5 mA
  • Enclosure: Zinc die cast
  • Connector: Gold-plated 3-pin XLR
  • Dimensions: 6.22" x 2.04" x 1.42" (158 x 52 x 36mm)
  • Net weight: 14.9 oz. (425 g)
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