The Lectrosonics DSR 2-Channel Slot Receiver All-Weather Kit from B&H supplements the camera-slot receiver with two DSSM water-resistant bodypack transmitters, a DPR-A handheld plug-on transmitter, a four-bay charger for the bodypack, and a silicone cover for the plug on. Simply add the lavalier and handheld microphones of your choice for a versatile two-person wireless system ready for a wide range of broadcasting and recording applications.
The Lectrosonics DSR is a lightweight two-channel digital slot receiver engineered for mobile sound production, sports video, reality TV, and anywhere a wireless system must provide mission-critical signal stability and clear, transparent 24-bit / 48 kHz sound. It is compatible with the company's mono digital transmitters (DBSM, DBu, DHu, DPR, DPR-A) and stereo digital transmitters (DCHT, M2T), and backward compatible with any Digital Hybrid Wireless transmitter.
The DSR provides two independent receiver channels at the highest level of RF and audio performance available—versatile field-proven feature set, selectable AES3 or analog mic-/line-level outputs, and next-generation capabilities in the Unislot/Superslot form factor—for ENG, field, and location production. Settings can be made from the front panel with tactile buttons and a color LCD interface, making the unit ideal for use in portable bag systems, mounted in or on cameras, and on sound carts. The built-in RF spectrum analyzer and SmartTune function help you quickly find a clean frequency to alleviate interference problems in an increasingly congested RF spectrum.
- The mechanical design of the DSR fits into the Superslot ecosystem and combines field-proven features developed over many years of experience in motion picture and television production. To decrease weight, the DSR packs two channel receivers in one unit powered by external DC.
- The 2-way IR sync makes quick work of setting up matching transmitters.
- The machined aluminum housing and panels are surfaced with a hard-anodized finish with laser etched markings to withstand the rigors of field production.
- The DSR's Vector Diversity subsystem smoothly and continuously combines RF signals from two receiver front ends per channel, with differing phase angles in order to obtain maximum energy. Not only does this method deliver clean, artifact-free performance in all modes, it is actually able to take two signals compromised by multipath interference and reassemble them into a usable signal.
- The two RF gain stages in the front end of each audio channel provide low-noise RF amplification, excellent sensitivity, and extremely low susceptibility to intermodulation and desensitization.
- The DSR offers one of the highest Third-Order (IP3) performances at +11 dBm, compared with +5 to +8 dBm provided by typical audio RF receivers. High IP3 performance allows the receiver to better eliminate the negative impact caused by third-order intermodulation artifacts and have a better signal-to-noise ratio, more reliably in today's tough RF environments.
- SmartTune is the easiest and fastest way to scan the local RF spectrum and find clear operating frequencies. The receiver scans through its tuning bandwidth and automatically finds empty areas within the tuning range that have little or no RF energy. The receiver will then set itself to a frequency within an empty area and prompt you to continue or use the IR function to sync to a transmitter.
- With a noise floor at -120 dBV and a frequency response up to 20 kHz, high-frequency noise in the source audio is more apparent than in conventional wireless systems. The SmartNR algorithm has three modes. When Off, no noise reduction is performed. When Normal is selected, enough noise reduction is applied to remove most of the hiss from the mic preamp and some of the hiss from lavalier microphones. When Full is selected, enough noise reduction is applied to remove most of the hiss from nearly any signal source of reasonable quality, assuming levels are set correctly at the transmitter.
- The DSR offers compatibility with the D-Squared and Duet digital transmitters, including the DBu, DHu, DPr, DCHT, DBSM, and M2T.
- There is backward compatibility with any Digital Hybrid wireless transmitters including the SM and SMWB series, WM, HM Series, MM400 Series, HHSeries, LT, LMb, UM400 Series, and SSM.
- Tune across 144 MHz
- Two independent receiver channels
- Unislot/SuperSlot form factor
- Vector diversity mode
- Two RF front ends per audio channel
- Fast RF scanning and setup via IR
- 24-bit / 48 kHz digital audio
- Selectable AES3 or analog mic-/line-level outputs
- Built-in RF spectrum analyzer
- SmartTune for quick auto frequency selection and 2-way IR sync for fast setup
- High Third-Order Intercept (IP3) performance of +11 dBm
- Built-in 1 kHz audio test tone
- Powerful AES 256-CTR mode encryption with four different encryption key policies including Universal, Shared (great for sports coverage), Standard, and Volatile (one-time use key)
- LCD display provides visibility in all lighting conditions
- USB jack and data connection through the SuperSlot interface for compatibility with Lectrosonics Wireless Designer frequency coordination and system management software
- Machined aluminum housing with hard-anodized finish
- Compatible with all previous SR Series connector plates, battery sleds, bezel collars
Ideal for theater, TV, film, sports, and broadcast applications where concealment is desired and water-resistance is required, the 470 to 607 MHz Lectrosonics DSSM Micro Digital Wireless Transmitter is the company's smallest transmitter with an IP57 rating and dock-charging capability. The DSSM offers an extensive feature set packed into an exceptionally rugged and lightweight, solid-aluminum housing, and is compatible with all Lectrosonics digital receivers, including the DSR, DSR4, DSQD, DCR822, M2Ra, and DCHR. The servo bias input circuitry can accommodate an electret lavalier mic, a dynamic mic, or a line-level input via the locking, 3-pin LEMO connector.
The DSSM includes specially developed, high-efficiency circuitry for extended operating time on the rechargeable LB-50 battery. RF power selections are offered at 10, 25, and 50mW (D2 mode) and at 4mW (Special High Density/HDM mode). The membrane switch panel and OLED display enable quick access to all adjustments and settings.
- The IP57 rating indicates that the unit is protected against dust ingress while also withstanding water immersion up to 3.2' for 30+ minutes—all while allowing for quick battery swap-outs
- The housing is constructed of machined aluminum alloy treated in the conductive, super hard electroless nickel ebENi finish
- The audio-input jack is a 3-pin LEMO connector with a threaded collar adding additional ruggedness
- The optional CHSDSSM battery charging station provides a convenient and organized way of recharging any mix of four DSSM transmitters and/or four LB-50 lithium-ion batteries
- Full charging of battery takes 3 hours
- The DSSM transmitter can operate up to 6 hours on a full charge
- For larger systems with numerous batteries in regular use, the CHSDSSM charger may be daisy-chained to 3 additional CHSDSSM chargers using a single DCR5/9AU AC/DC power supply (available separately) for a total of 16 LB50s and/or DSSMs charging at once
- The input section features the unique Lectrosonics servo bias input circuitry accepts mic- or line-level signals with a wide range of gain adjustment in 1 dB steps
- Accurate indications on the display allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion
- A DSP-controlled analog audio limiter is employed ahead of the first mic preamp to protect the entire audio chain from overload. The limiter has a range of more than 30 dB for excellent overload protection, and a dual-release envelope that makes the limiter acoustically transparent while maintaining low distortion of brief transients and longer duration peaks
- Selectable low-frequency roll-off at 35, 50, 70, 100, 120, and 150 Hz
- The membrane switch panel and OLED display enable access to all adjustments and settings. The menu structure is easy to navigate
- Battery status is indicated by a bi-color LED that is green with a fresh battery, then turns to red as the battery runs down, and finally starts blinking red when there are only a few minutes of runtime remaining
- The DSSM offers AES 256-bit CTR encryption with four key policies including Universal, Shared, Standard, and Volatile. This covers a wide variety of use cases, including government, corporate, and sports coverage
- LectroRM (available separately) is a third-party mobile application for iOS and Android smartphone operating systems. Its purpose is to make changes to the settings on the DSSM transmitter by delivering encoded audio tones to the microphone attached to the transmitter
- When the tone enters the transmitter, it is decoded to make a change toa variety of different settings such as input gain, frequency, and more
- Compatible with DSQD, DCHR, M2Ra, DSR, DSR4, and DCR822 receivers
- Audio-input connector: LEMO 3-pin
- IP57 rating: avoids water ingress for 30 minutes or more when submerged under 3.3' of water
- Removable battery: the DSSM uses an LB-50 rechargeable lithium-ion battery
- Easy-to-use onboard buttons and rich display, with the same menu structure as the company's DBSM family of transmitters
- USB jack located inside the battery compartment for firmware updates in the field, using Wireless Designer software
- All-metal construction
- Removable antenna with SMA mount
- RF Power settings at 10, 25, and 50mW in D2 mode and 4mW for HDM mode
- AES 256-bit CTR encryption with four key policies including universal, shared, standard, and volatile (this covers a wide variety of use cases, including government, corporate, and sports coverage)
- Includes flexible, repositionable wire belt clip
Ideal in larger systems with numerous batteries in regular use, the Lectrosonics CHSDSSM is a four-bay charging station that provides a convenient and organized way of recharging any mix of four DSSM transmitters and/or four LB-50 lithium-ion batteries. Each CHSDSSM module may be daisy-chained to 3 additional CHSDSSM modules using a single DCR5/9AU AC/DC power supply (not included) for a total of 16 LB50s and/or DSSMs charging at once.
The CHSDSSM charging station features an individual LED on each charging bay. Red indicates the battery is charging and green indicates the battery is completely charged. Each charging module is reverse-polarity protected and individually fused (10A one-time fuse). Battery charging time is 3 hours.
- Each CHSDSSM charges up to 4 LB-50 lithium-ion batteries or 4 DSSM transmitters
- Connect up to 4 CHSDSSMs using a single power supply (16 batteries/DSSMs charging at once)
- Ideal for large installations
- Individual charging circuits and LED status indicators
The Lectrosonics DPR-A is a digital plug-on wireless transmitter equipped with a built-in recorder and an SMA-mount whip antenna for longer operating range. It is compatible with all D-Squared Series receivers including the DSQD, DCHR, and DCR822 receivers. Powered by 4th generation Lectrosonics digital technology, the DPR-A features high-efficiency circuitry specially developed for extended operating time on two AA batteries. The unit offers reliable, studio-quality audio (with a particularly low noise floor), RF power selections at 25 and 50mW, and is well suited for professional use in TV, broadcast, and film as well as houses of worship and concert venues.
The DPR-A accepts mic- or line-level signals via a standard XLR connector and provides selectable 5, 15, 48V phantom power to condenser microphones. The input stage employs an ultralow-noise op-amp for quiet operation. It offers a broad range of input-gain adjustment along with DSP-controlled limiting to deliver pristine audio at a 24-bit/48 kHz resolution. The pure digital architecture enables AES 256-CTR encryption for applications requiring high-level security.
The unit can also be used as a standalone recorder, with 24-bit/48 kHz WAV files recorded onto a microSDHC card. The DPR-A can be jammed with timecode sync for discreet audio file alignment during postproduction. Note that the transmitting and recording functions cannot be used simultaneously. Users must choose to transmit or record.
Setup and adjustments are achieved through a backlit LCD, membrane switches, and an intuitive menu structure. The DPR-A also offers hands-free setup and adjustment using audible tones via the LectroRM mobile app (available separately). The DPR's housing is constructed of solid machined aluminum for lasting performance.
The unit ships with two AMM whip antennas. A PHTRAN3 leather pouch is included to protect your transmitter when working in the field.
- The DPR-A 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 55 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 DPR-A tunes in coarse or fine steps across the entire 138 MHz UHF frequency range, from 470 to 608 MHz.
- The external SMA antenna jack accepts Lectrosonics steel flex wire AMM (included) or AMJ series antennas.
- 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.
- LEDs provide red/green indications of the audio level from -20 dB to the onset of limiting, enabling accurate input-gain adjustment.
- The LectroRM app (available separately) is a mobile application that lets you remotely control the DPR. 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 6 hours on two AA batteries—3.5 hours with 48V phantom
- Firmware updates are made via the microSDHC card.
Fashioned in black, this is a Silicone Cover from Lectrosonics for the Lectrosonics DPR-A plug-on transmitter.