Lewitt LCT 940 Condenser Tube Microphone User Manual
- June 13, 2024
- LEWITT
Table of Contents
Lewitt LCT 940 Condenser and Tube Microphone
INTRODUCTION
Thank you that you have opted for a LEWITT product. In this operating manual you will learn more about your LEWITT microphone, its handling and its proper usage. With the LCT Authentica Series, LEWITT introduces a new generation of highly versatile wired condenser microphones that all aim for setting new benchmarks of technology, sound quality and user-friendliness in both professional studio recording and onstage use. The microphones of the LCT Authentica Series stand for unaltered sound and innovative features: llluminated Settings, Noiseless Push Buttons, Automatic Attenuation with Clip Detection and History all ensure error-free sonic perfection and peerless ease of use for today’s demanding recording artists and engineers. Day after day, be it for live acts, in home studios or in professional studio productions. LEWITT wishes you a lot of fun and success with this product!
Sound professionals naturally rely on a set of different high-end microphones in order to get the best out of their sound. But changing microphones and adjusting settings takes valuable time, the creative flow of a session is interrupted. With its new Authentica series flagship LCT 940, LEWITT now introduces a microphone that will revolutionize modern studio recording procedures and help engineers and artists to react more quickly to a desired change of style and sound.
The LCT 940 combines the specific characteristics of a premium large-diaphragm FET condenser microphone and a top-notch tube microphone in one housing. Basically, users can choose between the two main settings “FET” and “Tube”.
“Tube” delivers the classic, warm, and rich tube sound, while “FET” stands for the clear, exceptionally rich, and nuanced sound LEWITT condenser microphones are renowned for. However, the LCT 940 offers another unique feature that true recording enthusiasts will swoon over: As the characteristics of the two main settings can be mixed and merged continuously, the LCT 940 opens up huge creative possibilities for artists and producers. Furthermore, the LCT 940 features a total of nine different polar patterns – our five “standard” polar patterns omnidirectional, cardioid, figure-8, wide- and super-cardioid, and four additional intermediate patterns. The microphone features four levels of attenuation and four switchable high-pass filters, LEDs, and push buttons for noiseless handling on the PSU. Automatic attenuation and clipping history round off the outstanding feature list of the LCT 940. Rich in advanced technological features, the LCT 940 opens up a new dimension of sound reproduction in demanding professional studio applications. Its unrivaled set of qualities makes this microphone a must-have for recording pros who strive for nothing less than perfection.
Features
- Combines the sonic characteristics of a tube and a FET mic in one single housing for maximum creative freedom and an undisturbed workflow
- Continuously variable switching and merging of tube and FET sound via rotating potentiometer 1-inch externally biased, dual-system capsule with ultra-thin, gold-layered low-mass diaphragms combined with a dual triode tube ensures accurate transient response while providing smooth, warm and airy tube sound
- Nine consistent directional characteristics – cardioid, omnidirectional, figure-8, broad cardioid, supercardioid, and four intermediate patterns – for maximum flexibility in a wide variety of recording applications
- The superior dynamic range of 128 dB-A (Tube) / 135 dB-A (FET) and exceptionally low self-noise of 12 dB-A (Tube) / 8 dB-A (FET) for ear-catching realism and distortion-free sonic depth 4-position switchable pre-attenuation pad (0 dB, 6 dB, 12 dB and 18 dB) for handling extremely high sound pressure levels and 4-position high-pass filter
- Illuminated user interface and jog dials for easy handling even in dark environments
- Noiseless pushbuttons for quick and easy attenuation and HPF selection
- Unique features like clipping history and automatic attenuation provide error-free studio recording and unparalleled ease of use
- Solid die-cast metal body with a stylish, oversized tube inspection window specially coated for maximum protection against electromagnetic interference
- Custom PSU 940 power supply unit with sturdy full-metal housing and brushed, anodized black aluminum front
- Extra-large hexagonal ruthenium-galvanized steel mesh grille provides an open acoustic environment and prevents unwanted internal reflections
- Corrosion-resistant gold-plated 3-pin XLR output connector
- Comes in a black carrying case; includes PSU 940 power supply unit with sturdy full-metal housing and milled, anodized black aluminum front, LCT 40 SHxx shock mount, LCT 40 Tr audio cable with gold-plated
- 11-pin XLR connectors and LCT 40 Wxx windscreen
Top applications
- Lead and background vocals
- Acoustic instruments // piano, guitar, drums, percussion, strings…
- Wind instruments // brass and woodwinds…
- Demanding studio applications
User-interface
- Mains voltage selection switch
- On / Off switch
- Status indicator
- Stageless amplification selection,rotary knob
- Polar pattern selection, jog-dial
- High-pass filter indications
- Noiseless high-pass filter push button
- Pre-attenuation indications
- Noiseless pre-attenuation push button
- 3-pin XLR socket
- 11-pin XLR socket
- Mains socket
- Fuse
- 11-pin audio cable
Getting started
- Make sure that the Mains voltage selection ① switch is set to the correct position.
- Use the 11-pin audio cable to connect the microphone with the 11-pin XLR socket on the backside of the PSU.
- Use the 3-pin audio cable to connect your mixer with the 3-pin XLR socket ⑩ on the backside of the PSU.
- Put the LCT 940 into operation by activating the On / Off switch ② on the backside of the PSU
Status indicator
- The microphone is in normal working mode if the status indicator is illuminated in white.
- The microphone is in key-lock mode if the status indicator is not illuminated.
- The microphone experiences clipping due to high SPL if the status indicator flashes in red.
- The microphone is in automatic attenuation mode if the status indicator is illuminated in red.
- The microphone indicates the clipping history if the status indicator flashes red and white in an alternating sequence.
Stageless Amplification selection
- Turn the rotary knob and select the desired amplification. Clean “FET” and warm “TUBE” amplification is available on the far right and left position, a mixture of the two in between.
- The actual amplification mix is indicated by the red illuminated dot or red illuminated “FET” or “TUBE” indication.
Polar pattern selection
- The currently active polar pattern is illuminated in white. If an intermedia polar pattern is selected the neighboring polar pattern are illuminated in red as well.
- Select up to nine different directivity characteristics by briefly turning the jog-dial to the right or left.
High-pass filter indications
The currently active high-pass filter setting is illuminated in white.
Setting a high-pass filter
- High-pass filters can be set by briefly pressing the noiseless high-pass filter push button.
- Settings are: linear, 12 dB / octave at 40 Hz, 6 dB / octave at 150 Hz and 6 dB / octave at 300 Hz.
Pre-attenuation indications
The currently active pre-attenuation setting is illuminated in white.
Setting a pre-attenuation level
Pre-attenuation levels can be set by briefly pressing the noiseless pre-
attenuation push button . Settings are: 0 dB, -6 dB, -12 dB and -18 dB. Pre-
attenuation is used in extremely high SPL environments in order to prevent
clipping of the microphone, mixer and other audio equipment.
Automatic attenuation function
The microphone will automatically adjust to the next higher attenuation level
if it experiences clipping due to a high SPL. The microphone enters and leaves
the automatic attenuation mode by constantly pressing the pre-attenaution push
button ⑨ for more than 2 seconds. The microphone is set to automatic
attenuation mode if the status indicator ③ is illuminated in red. Please note
that the microphone will need one second to adjust to the new attenuation
level in the event of too high sound pressure levels.
Key-lock function
The noiseless push buttons and as well as the polar pattern jog dial can be
locked by pressing the jog dial knob for more than 2 seconds.
Clipping history
Checking the clipping history lets you know if the microphone had experienced
clipping in the past. The microphone displays the clipping history after
constantly pressing the high-pass push button for more than two seconds. When
in clipping history mode the status indicator flashes red and white in an
alternating sequence, the polar pattern indications as well as the high-pass
indications are not illuminated. Clipping history mode provides information
and works according to the rules listed below The last manually set
attenuation level is indicated by a constantly illuminated attenuation LED. If
clipping has occurred in the past this LED will flash.
- The clipping history information can only be accessed once.
- Clipping information will be deleted after leaving this mode by constantly pressing the high-pass filter push button ⑦ for more than two seconds.
- Clipping history information will be deleted once you access the automatic attenuation mode.
- Clipping history information will not be deleted when unplugging the microphone
Tech graph
Tech Data
Accessories
Cautions
- To ensure high sensitivity and best sound reproduction of the microphone, avoid exposing it to moisture, dust or extreme temperatures.
- Keep this product out of the reach of children.
- Do not use force on the switch or cable of the microphone.
- When disconnecting the microphone cable, grasp the connector and do not pull the cable.
- Do not attempt to modify or fix it. Contact qualified service personnel in case any service is needed.
- Please do not disassemble or modify the microphone for any reasons as this will void users warranty.
- The casing of the microphone can be cleaned easily using a wet cloth, never use alcohol or another solvent for cleaning.
- If necessary the foam wind stopper can be washed with soap water. Please wait till it is dry before using it again.
- Also please refer to the owner’s manual of the component to be connected to the microphone.
Warranty
All products manufactured by LEWITT GmbH feature a limited two-year warranty. This two-year warranty is specific to the date of purchase as shown on your purchase receipt. LEWITT GmbH shall satisfy the warranty obligations by remedying any material or manufacturing faults free of charge at LEWITT’s discretion either by repair or by exchanging individual parts or the entire appliance. Any defective parts removed from a product during the course of a warranty claim shall become the property of LEWITT GmbH. While under warranty period, defective products may be returned to the authorized LEWITT dealer together with original proof of purchase. To avoid any damages in transit, please use the original packaging if available. Please do not send your product to LEWITT GmbH directly as it will not be serviced. Freight charges have to be covered by the owner of the product. For further information please visit
LEWITT GmbH declares under its sole responsibility that LCT 940 complies with the European directive 2004/108/EC and 2006/95/EC. The product has been tested according to harmonized European standards:
- EN 55022: 2010
- EN 55024: 2010
- EN 61000-3-2: 2006 + A2: 2009
- EN 61000-3-3: 2008
- EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011
Product testing was carried out by SEM. Test Compliance Service Co., Ltd.
notified body number SEM11124587 / SEM11126875.
LEWITT GmbH hereby declares under its sole responsibility that LCT 940 has
been tested and conforms to the following FCC and ANSI standards:
WEEE note : Electronic waste has to be collected separately. Please bring this device to a local recycling center at the end of its life time.
Manufacturers signature:
- Date : 18th November 2010 DI Roman Perschon
- Place : Vienna, AUSTRIA CEO – Lewitt GmbH
Declaration of conformity can be downloaded at www.lewitt- audio.com or obtained from info@lewitt- audio.com. or check your warranty card.
FAQs
What is the Lewitt LCT 940 Condenser Tube Microphone?
The Lewitt LCT 940 is a high-quality condenser tube microphone known for its versatile audio recording capabilities.
What type of microphone is the Lewitt LCT 940?
The Lewitt LCT 940 is a large-diaphragm condenser microphone, ideal for capturing vocals and instruments with exceptional detail.
Is the Lewitt LCT 940 suitable for studio recording?
Yes, the Lewitt LCT 940 is designed for studio use and excels in professional recording applications.
Does the LCT 940 require external power?
Yes, it requires an external power source, and it can be powered by an included power supply unit.
What is the pickup pattern of the Lewitt LCT 940?
The LCT 940 offers five selectable polar patterns, including cardioid, omnidirectional, and figure-eight, providing flexibility in recording options.
What is the frequency response range of the LCT 940?
The LCT 940 has a wide frequency response range, typically from 20Hz to 20kHz, ensuring accurate audio reproduction.
Can I use the LCT 940 for live performances?
While it's primarily a studio microphone, you can use the LCT 940 for live performances with proper setup and equipment.
Does the LCT 940 come with a shock mount or other accessories?
Yes, the LCT 940 typically comes with a shock mount, power supply, and a sturdy carrying case.
What is the maximum sound pressure level (SPL) the LCT 940 can handle?
The LCT 940 can handle high SPLs, often exceeding 135dB, making it suitable for loud sound sources.
Is the LCT 940 compatible with standard microphone stands and mounts?
Yes, it is compatible with standard microphone stands and mounts, making it easy to set up in your studio.
What kind of tube does the LCT 940 use, and what does it add to the sound?
The LCT 940 uses a 12AX7 vacuum tube, which adds warmth and character to the microphone's audio capture.
Does the LCT 940 come with a warranty?
Yes, the Lewitt LCT 940 Condenser Tube Microphone typically comes with a manufacturer's warranty to ensure peace of mind with your purchase.
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