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Lectrosonics Introduces DBu-LEMO Wireless Bodypack Transmitter

Newest member of D Squared series designed to be utilized in a variety of licensed and unlicensed applications.
Two views of the new DBu-LEMO bodypack transmitter from Lectrosonics.

Lectrosonics has introduced the DBu-LEMO bodypack transmitter as part of the D Squared product series, where it’s compatible with the DSQD digital receiver and offers a tuning range of 470 to 608 MHz (614 MHz for export version).

The new transmitter includes high-efficiency circuitry designed for extended operating time on two AA batteries, and it provides RF power selections at 10, 25 and 50 mW (roughly equivalent in operating range to 25, 60 and 120 mW in an FM transmitter), thus it’s able to be employed for a variety of licensed and unlicensed applications.

Stated audio frequency response is 20 Hz to 20 kHz (+0.0, – 3 dB) and dynamic range is 110 dB (before limiting) along with a flat in-band phase response. The digital architecture enables encryption for high-level security applications.

Audio performance is enhanced by quality components in the preamp, wide range input gain adjustment, and DSP-controlled analog limiting. Input gain is adjustable over a 52 dB range in 1 dB steps to match to the input signal level, designed to maximize audio dynamic range and signal-to-noise ratio. The two-way IR port is intended to foster quick setup and allows for encryption key transfer and other data sharing between units.

A multi-function switch on top of the transmitter can be configured as power on/off, mute, talkback, or bypassed altogether. A micro USB jack on the unit can be used to update the unit’s firmware in the field using Wireless Designer software running on a Mac or PC. The DBU-LEMO responds to remote “dweedle tone” commands, available via third-party apps such as New Endian’s LectroRM, allowing users to change settings including frequency, audio level, RF power level, and sleep/unsleep.

The machined aluminum housing is the same size and shape as the previous generation DBa and DBu units so that standard accessories are useable with the new unit, including the belt clips. The 00 Lemo 3-pin connector and input wiring is also the same as on the SSM micro transmitter, allowing the use of existing lavalier microphone cable and audio adapter accessories.

The DPR’s audio transmission is encrypted in a 256-bit AES, CTR-mode format for added security and to meet FIPS 197 and 140-2 standards. Three different key management modes can be employed, including Universal, where all units in the D Squared family share the same key; Shared, where a unique key is created and can be shared between transmitters and between transmitters and receivers; and Standard, where a unique key is created but cannot be shared between transmitters or from transmitters to receivers.

“The DBu-LEMO is a very important addition to the D Squared digital wireless system product line,” says Karl Winkler, VP of sales & marketing at Lectrosonics. “Those looking for outstanding audio performance, the overall compactness and flexibility of the D Squared system, and the industry-standard Lemo connector for their existing stock of lav mics, this should be a must-have item.”

MSRP for the DBu-LEMO is $2,215. It is shipping now.


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