The LCT 550 is the first and only large-diaphragm studio microphone ever to achieve 0 dB (A) self-noise*. 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
- A perfect match – highly precise calibration of capsule and electronics means that any two 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-inch 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
Top applications
- Classical instruments and ensembles
- Ambitious stereo recording techniques (XY, ORTF, AB, ...)
- Vocals & background vocals
- Acoustic instruments (strings, guitars, piano and similar)
- Drum & percussion overhead
Tech Data
| Acoustical operating principle |
pressure gradient transducer, externally polarized |
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| Diaphragm |
3 micron gold sputtered Mylar |
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| Transducer Ø |
25,4 mm / 1 inch |
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| Polar pattern |
cardioid |
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| Frequency range |
20 to 20.000 Hz |
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| Sensitivity |
36 mV / Pa (-29 dBV), +/- 0 dB @ 1 kHz |
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| Signal / noise ratio |
91 dB (A) |
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| Equivalent noise level |
0 dB (A) self-noise from electronics and circuitry
3 dB (A) according to IEC 60268-1 due to Brownian motion |
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| Dynamic range of FET mic. Amp. |
140 dB (A) |
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| Max. SPL for 0,5 % THD |
143 dB, 0 dB pre-attenuation |
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| Pre-attenuation pad |
6 dB, 12 dB, switchable |
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| Low cut |
12 dB / octave at 80 Hz |
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| Rated impedance |
< 150 ohms |
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| Rated load impedance |
> 1.000 ohms |
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| Supply voltage |
48 V +/- 4 V |
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| Current consumption |
5,5 mA |
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| Enclosure |
Zinc die cast |
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| Connector |
gold plated 3-pin XLR |
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| Dimensions |
158 x 52 x 36 mm / 6,22 x 2,04 x 1,42 inch |
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| Net weight |
425 g / 14,9 oz |
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