Using state-of-the-art Digital Hybrid Wireless technology, this Lectrosonics DSQD 4-Channel Digital Wireless Receiver with Dante Kit from B&H adds four DBu digital bodypack transmitters to meet the needs of audio professionals in broadcasting or on film and TV sets.
The Lectrosonics DSQD packs four wideband receivers, with analog XLR and Dante digital outputs, into a compact, half-rack chassis that fits into a cart or even a bag. Part of the D-Squared Series and powered by 4th generation Lectrosonics digital technology, the unit delivers the company's high-standards of reliability, flexibility, and studio-quality audio to professionals in TV, broadcast, and film, as well as houses of worship, theater, and concert venues.
Audio fidelity is outstanding with a flat 20 Hz to 20 kHz frequency response, wide dynamic range, 24-bit/48 kHz digital audio encoding, digital transmission, and ultra-low latency. The DSQD tunes continuously across the extended UHF band from 470 to 608 MHz. It features tracking filters that stay centered on the selected frequency, ensuring excellent RF performance even in difficult environments. Three selectable diversity modes can be employed, depending on the needs of the application. The DSQD is optimized for the DBu bodypack and DHu handheld digital transmitters, but is also backward-compatible with any Digital Hybrid wireless transmitter. Three levels of AES 256-CTR encryption are available when using digital transmitters.
The streamlined menu structure makes the unit easy to use and quick to set up with auto-scan and two-way IR sync. A large, high-resolution backlit LCD and large membrane switches provide an intuitive interface that is highly visible in daylight or dimly lit conditions. The DSQD can be programmed and monitored over its USB or Ethernet connections using the Wireless Designer software for Mac/Windows (free download available separately). The software allows for offline full-system frequency coordination, greatly reducing setup time.
Antenna ports on the rear panel accept input from remote antennas. The antenna "loop-thru" cascade outputs use an internal multi-coupler, enabling you to run multiple receivers from a single pair of antennas without the need for additional components. The DSQD includes half the rack hardware needed to mount two units together, yielding 8 channels in 1RU. If you're rackmounting only a single DSQD, the RMPM2T-1 mounting kit (available separately) is required.
- 1.4 ms latency, transmitter input to analog output, using a digital transmitter
- <2.9 ms latency, transmitter input to analog output, using any Digital Hybrid Wireless transmitter
- THD+N of 0.05% at 1 kHz, -10 dBFS
- 108 dB of dynamic range
Ratio: Two receiver channels can be paired as one receiver. Both channels are set on the same frequency. One receiver in the pair is fixed on Antenna A, while the other receiver is fixed on Antenna B. The DSQD automatically uses whichever receiver’s RF signal quality is better.
Frequency: Two receiver channels are paired as one receiver. Each channel is set to a different frequency. The DSQD automatically uses whichever receiver’s RF signal quality is better.
Shared: There are an unlimited number of shared keys available. Once generated by the DSQD and transferred to the transmitter, the encryption key is available to be shared (synced) by the transmitter with other transmitters/receivers via the IR port.
Universal: This is the most convenient encryption option available. All encryption-capable Lectrosonics transmitters and receivers contain the Universal Key. The key does not have to be generated by the DSQD. Simply set a Lectrosonics encryption-capable transmitter and the DSQD to Universal, and the encryption is in place.
- Digital talkback capability when used with talkback-enabled transmitters
- Stereo headphone jack with retractable headphone volume knob for audio monitoring per channel
- Antenna bias power can be engaged in the menu, and front-panel LEDs show the status
- Serial input and output ports for connecting receivers to each other for data sharing
- Adding a pair of ALP690 active antennas increases the range of your system and offers increased protection against interference
The Lectrosonics DBu is a digital bodypack wireless transmitter compatible with D-Squared Series receivers. Powered by 4th generation Lectrosonics digital technology, it includes high-efficiency circuitry specially developed for extended operating time on two AA batteries, and offers RF power selections at 25 and 50mW. The pure digital architecture enables AES 256-CTR encryption for applications requiring high-level security.
The DBu features a standard Lectrosonics TA5M connector with a servo-bias input compatible with a wide range of lavalier and headset mics, dynamic mics, and line-level sources. The unit employs high-quality components in the preamp, a broad range of input-gain adjustment, and DSP-controlled analog limiting to deliver studio-quality audio at a 24-bit/48 kHz resolution.
The switch on the top panel can be configured for use as a mute or power switch, or for talkback communication with the production crew; it can also be disabled to prevent accidents. The DBu's housing is constructed of solid machined aluminum with an ultra-hard, black electroless nickel exterior finish for lasting performance.
- The DBu input preamp features a unique servo-bias design that delivers audible improvements over conventional transmitter inputs, making the unit easier to use and much harder to overload.
- The input gain is adjustable over a 44 dB range in 1 dB steps, allowing for an exact match to the input signal level, while maximizing the dynamic range and signal-to-noise ratio.
- The transmitter employs a digitally controlled analog audio limiter prior to the A/D converter. The limiter has a range greater than 30 dB for excellent overload protection. A dual-release envelope makes the limiter acoustically transparent while maintaining low distortion.
- The DBu tunes in coarse or fine steps across the entire 138 MHz UHF frequency range, from 470 to 608 MHz.
- Standard: This is the highest level of security.
- Shared: The encryption key can be shared by the transmitter with other transmitters/receivers via the IR port.
- Universal: This is the most convenient encryption option.
- Setup and adjustments are enabled through a backlit LCD, membrane switches, and an intuitive menu structure.
- The IR Sync port lets you transfer the frequency settings from the receiver to the transmitter for quick setup.
- The top panel contains the antenna jack, audio-input-level LEDs, the programmable function switch, and the audio-input jack.
- LEDs provide red/green indications of the audio level from -20 dB to the onset of limiting, enabling accurate input-gain adjustment.
- The transmitter is supplied with a stainless, spring-wire belt clip that remains secure, but which can be easily detached and re-attached without tools.
- A BCSLEBN spring-loaded belt clip is available as an option.
- The battery door latches securely to prevent it being opened inadvertently and does not pop open even if the unit is dropped.
- The LectroRM app (available separately) is a mobile application that lets you remotely control the DBu. It allows you to change the audio level, frequency, and lock mode wirelessly. The app is available for iOS and Android operating systems.
- Operates for up to 5 hours on two AA batteries
- Removable antenna with SMA connector
- Settings can be locked to prevent inadvertent changes from being made. When the unit is locked, the programmable switch continues to operate
- Firmware updates are made via the USB port on the side panel. The procedure is simple, using a menu item on the transmitter and a standard micro-USB cable