- Covers four standard frequency blocks (depending on area of operation)
- Digital Hybrid Wireless for compandor-free audio
- 50 mW RF
- Compatibility modes for use with analog receivers
- 25 or 100 kHz tuning steps
- Integrated multi-function switch for mute or talkback modes
- Wide range input gain control in 1 dB steps
The LMb transmitter can be configured to operate as a “one touch” device with a single power on/off switch on the top panel, or with full access to all operational parameters using the side panel membrane switches and LCD interface. The top panel switch can also be configured to provide a mute or talkback function.
This versatility makes the transmitter at home in a wide variety of applications from video production to theater, stage and house of worship.
Along with providing peerless audio quality with wide frequency response and dynamic range in Nu Hybrid mode, the technology used in the LMb includes compatibility modes for Lectrosonics Mode 3 and IFB receivers.
Frequencies are selectable in 100 kHz or 25 kHz steps across a maximum tuning range of 76.7 MHz. This yields a total of 3072 available frequencies across three standard frequency blocks. The tuning range varies in other blocks to meet applicable frequency allocations.
Special note regarding LMB, LMB/E01 and LMB/E06 firmware:
These models are not capable of firmware updates in the field so no files are available for download. See firmware revision history tab for more information. Contact Lectrosonics or your local service center if you need to have firmware updates applied to these products.
LMb Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
LMB Firmware Update v6.06 – 22 April 2021
- Failed IR sync operations are now handled more gracefully.
LMB Firmware Update v6.00 – 11 October 2018
Introduces “Nu Hybrid” compat mode, which replaces the legacy “400” mode. “Nu Hybrid” mode conforms to the ETSI standard now in effect for wireless microphone transmitters in the United States. Version 6.x firmware is for use in units shipping with these FCC ID numbers:
- DBZLMBA1A
- DBZLMBB1A
All new product shipped after October 13th, 2018 to US customers will bear these FCC ID numbers and use 6.x firmware.
LMB Firmware Update v2.13 – 11 March 2016
- Prevents erroneous “Switch Disabled” message from appearing at startup if the programmable switch is set to “none” and is in the “on” position at powerup.
LMB Firmware Update v2.11 – 03 June 2015
- LED Off feature: Changed labels associated with the feature, for clarity. Also dissociated this feature from the LED backlight, which is no longer affected, and made this feature inaccessible when the settings are “locked”.
- Changed splash screen to say “Band” instead of “Block”.
- It is no longer possible to power the transmitter off from the menu if the top panel switch is configured as a power switch. The prevents loop conditions and other errant behavior resulting from two “off” switches.
- The transmitter may now be powered on with “mute” or “talkback” already engaged via the top panel switch, and the Right Thing will happen. In the case of “talkback”, this means a dummy signal must be sent in “non-talkback” mode for a short time to engage the receiver.
- Fixed a user interface bug wherein changing compatibility modes with talkback active could cause anomalous behavior.
- Reduced latency in limiter sidechain for improved limiter responsiveness.
LMB Firmware Update v2.10 – 05 February 2015
- Initial public release.
LMb/X Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
LMB/X Firmware Update v2.16 – 11 November 2022
- When an IR sync fails, device will now restore operating parameters to the state they were in before the sync was initiated.
- Fixed a bug where sweeping though frequencies by pressing and holding an arrow button caused RF transmission on an undefined channel until the arrow button was released.
- Improved accuracy of mode 3 emulation.
LMB/X Firmware Update v2.13 – 11 March 2016
- Prevents erroneous “Switch Disabled” message from appearing at startup if the programmable switch is set to “none” and is in the “on” position at powerup.
LMB/X Firmware Update v2.11 – 03 June 2015
- LED Off feature: Changed labels associated with the feature, for clarity. Also dissociated this feature from the LED backlight, which is no longer affected, and made this feature inaccessible when the settings are “locked”.
- Changed splash screen to say “Band” instead of “Block”.
- It is no longer possible to power the transmitter off from the menu if the top panel switch is configured as a power switch. The prevents loop conditions and other errant behavior resulting from two “off” switches.
- The transmitter may now be powered on with “mute” or “talkback” already engaged via the top panel switch, and the Right Thing will happen. In the case of “talkback”, this means a dummy signal must be sent in “non-talkback” mode for a short time to engage the receiver.
- Fixed a user interface bug wherein changing compatibility modes with talkback active could cause anomalous behavior.
- Reduced latency in limiter sidechain for improved limiter responsiveness.
LMB/X Firmware Update v2.10 – 05 February 2015
- Initial public release.
LMb/E01 Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
LMB/E01 Firmware Update v2.15 – 10 June 2021
- Transmitter now syncs successfully via IR with receivers in the “NU Hybrid” mode.
- Failed IR sync operations are now handled more gracefully.
- Improved accuracy of mode 3 emulation.
- When adjusting frequency, carrier no longer comes back on in the middle of a long scroll through the available frequency range.
LMB/E01 Firmware Update v2.13 – 11 March 2015
- Prevents erroneous “Switch Disabled” message from appearing at startup if the programmable switch is set to “none” and is in the “on” position at powerup.
LMB/E01 Firmware Update v2.12 – 17 August 2015
- Added block 606 legacy feature, which can be used to pair band B1 and C1 transmitters with legacy block 606 receivers. This version behaves similarly to v2.11 if the unit is not on bands B1 or C1, or if the block 606 feature has not been explicitly enabled. Block 606 is a special frequency range used in the United Kingdom.
LMB/E01 Firmware Update v2.11 18 June 2015
- LED Off feature: Changed labels associated with the feature, for clarity. Also dissociated this feature from the LED backlight, which is no longer affected, and made this feature inaccessible when the settings are “locked”.
- Changed splash screen to say “Band” instead of “Block”.
- It is no longer possible to power the transmitter off from the menu if the top panel switch is configured as a power switch. The prevents loop conditions and other errant behavior resulting from two “off” switches.
- The transmitter may now be powered on with “mute” or “talkback” already engaged via the top panel switch, and the Right Thing will happen. In the case of “talkback”, this means a dummy signal must be sent in “non-talkback” mode for a short time to engage the receiver.
- Fixed a user interface bug wherein changing compatibility modes with talkback active could cause anomalous behavior.
- Reduced latency in limiter sidechain for improved limiter responsiveness.
LMB/E01 Firmware Update v2.10 – 12 February 2015
- Initial public release.
LMb/E06 Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
LMB/E06 Firmware Update v2.16 – 24 September 2021
- Failed IR sync operations are now handled more gracefully.
- Improved accuracy of mode 3 emulation.
- When adjusting frequency, carrier no longer comes back on in the middle of a long scroll through the available frequency range.
LMB/E06 Firmware Update v2.13 – 09 September 2016
- Initial public release.
