The Lectrosonics DSR4 Digital Slot Receiver 537-691 MHzis a lightweight quad-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 DSR4 provides four independent receiver channels at the highest level of RF and audio performance available, a 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.

Mobile Production, Sports, Reality TV    For Camera Slots and Bag/Cart Systems    Four Independent Channels/Compact Design    Vector and Antenna Diversity Modes    155 MHz Wideband Tuning Range    AES3 or Analog Mic-/Line-Level Outputs    TA5 Male Connector on Faceplate    All-Aluminum Housing for Durability    Backward-Compatible with Digital Hybrid    Secure AES 256-CTR Encryption

• The mechanical design of the DSR4 fits into the Super-Slot ecosystem and combines field-proven features developed over many years of experience in motion picture and television production. To decrease weight, the DSR4 packs four channel receivers in one unit powered by external DC.
• The 2-way IR sync makes quick work of setting up matching transmitters
• There is a built-in TA5 male connector on the faceplate for use with cameras or other docks not offering analog audio channels through the slot connector—channels 3 and 4, external audio outputs
• The machined aluminum housing and panels are surfaced with a hard-anodized finish with laser etched markings to withstand the rigors of field production.

• For versatility, the DSR4 offers both antenna Phase Switching diversity (4-channel operation) or Vector diversity (2-channel operation).
• 4-channel operation: each channel combines signals from both antennas in or out of phase, depending on field strength at each antenna and which combination yields the best results.
• 2-channel operation: receivers can be paired for Vector diversity mode. The Vector subsystem smoothly and continuously combines RF signals from both channels, with differing phase angles in order to obtain maximum energy.
• It is possible to have one Vector pair (say, channels 1 & 2) and two independent antenna phase channels (say, 3 & 4) for a total of 3 channels of independent operation.
• The two RF gain stages in the front end of each channel provide low-noise RF amplification, excellent sensitivity, and extremely low susceptibility to intermodulation and desensitization.

• The DSR4 offers one of the highest Third-Order (IP3) performances at +15 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, have a better signal-to-noise ratio, and also 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 DCR4 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.

• DSR4EXT: Bottom plate kit for external audio outputs, with two TA5M connectors and one DC jack
• DSR4SUPER: Bottom plate DB25 connector kit and mounting bezel for SuperSlot docks
• DSR4BATTSLEDTOP: Top-mounted L-type battery sled, with two TA5 audio output jacks and one DC jack
• DSR4BATTSLEDBOTTOM: Bottom-mounted L-type battery sled, with two TA5 audio output jacks and one DC jack
• DSR4DB25: End plate connector kit for Superslot sockets, no mounting bezel included
• DSR4EXTUSB: Bottom plate kit for external audio outputs, with two TA5M connectors, Hirose 4 DC jack, and USB-C connector for programming and control
• 36016: Adapter bezel for mounting the DSR4 in an Octopack or Quadpack, includes 4 screws

• Tune across 155 MHz
• Four independent receiver channels
• Unislot/Superslot form factor 
• Antenna phase switching and Vector diversity modes
• 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 TA5M connector on faceplate for channels 3 and 4 external audio 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 +15 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
• Proprietary accessories are required for mounting, powering, and audio outputs: DSR4EXT, DSR4SUPER, DSR4SNY, DSR4BATTSLEDTOP, and DSR4BATTSLEDBOTTOM

Related Questions and Answers

Q: 1. Does this come with a hard case? Does it come with a case? Is there a hard case for this and ideally a pair of transmitters?

A: No, a hard case is not included with the Shure ADX5D Axient Digital Dual-Channel Slot-Mount Wireless Receiver (470 to 636 MHz), As options for a hard case, the Pelican 1150 Case without Foam - Black (B&H # PE1150B), the Pelican 1150 Case with Foam - Black (B&H # PE1150FB), the Pelican 1120 Case without Foam - Black (B&H # PE1120B), or the Pelican 1120 Case with Foam - Black (B&H # PE1120FB) could work. For compatible transmitters, the Shure AD and ADX Series Transmitters can be used. A few of the options for handheld transmitters include the Shure ADX2/SM58 Digital Handheld Wireless Microphone Transmitter with SM58 Capsule - G57: 470 to 616 MHz (B&H # SHADX2SM58G5) and the Shure ADX2/B58 Digital Handheld Wireless Microphone Transmitter with Beta 58A Capsule - G57: 470 to 616 MHz (B&H # SHADX2B5857). The Shure ADX1 Digital Wireless Bodypack Transmitter with TA4M - G57: 470 to 608 MHz (B&H # SHADX1G57), the Shure ADX1 Digital Wireless Bodypack Transmitter with LEMO3 - G57: 470 to 608 MHz (B&H # SHADX1LM3G57), and the Shure ADX1M Digital Micro Bodypack Wireless Transmitter - G57: 470 to 608 MHz (B&H # SHADX1MG57) are options for compatible bodypack transmitters.

Q: 2. I need to replace my antennas, where can I find just those two parts?

A: You can use the Lectrosonics AMJKIT Whip Antenna for UM and SM Beltpacks, SR Receivers (B&H # LEAMJKIT) to replace the antennas for the Lectrosonics SRc Dual-Channel Slot-Mount ENG Receiver. The kit includes cutting template and color caps. You will need two of the antennas.

Q: 3. Is the DCHR immune from being fried by + 48V phantom power?

A: Correct

Q: 4. Is the DCHR receiver compatible with the Lectrosonics LRSHOE Receiver Mount on the Sony FX6 camera?

A: Yes, the DCHR can be camera mounted using the optional LRSHOE accessory. The Sony FX6 camera has a coldshoe bracket on top of the handle; the shoe adapter can attach to it.

Q: 5. Is this receiver compatible with the Lectrosonics WM transmitter?

A: Yes. Just select the band that covers the block that the WM is in. A1 covers blocks 470, 19, and 20. B1 covers blocks 21, 22, and 23. C1 covers blocks 24,25, and 26.

Q: 6. Of the DCHR compatible transmitters; D² Series/DPR/DCHT/M2T; can you use any 2 of those simultaneously with the DCHR receiver?

A: Yes, two compatible transmitters can be used simultaneously with the Lectrosonics DCHR Camera-Mount Miniature Digital Camera Hop Wireless Receiver.

Q: 7. Can this receive signals from two separate DBu mono transmitters simultaneousy?

A: Yes, the Lectrosonics DCHR Camera-Mount Miniature Digital Camera Hop Wireless Receiver can be used with two separate Lectrosonics DBu Digital Bodypack Wireless Transmitters at the same time.

Q: 8. Will they work with sony uwp transmitters?

A: The IFBlue IFBR1C Bodypack IFB Receiver requires a specific IFB signal transmitted from a compatible Lectrosonics transmitter on the same frequency range and will not work with transmitters from other brands such as Sony.

Q: 9. Is this compatible with the plug on HMa transmitter?

A: Yes, the Lectrosonics IFBR1B Bodypack IFB Receiver with Charger can receive signal from a Lectrosonics HMa transmitter on the same frequency range set to IFB Mode.

Q: 10. is this compatible with Zoom F8N?

A: This wireless receiver can be connected to an input of the Zoom F8N digital recorder, but it does require to be paired with the L Series LT Bodypack Wireless Transmitter (A1: 470 to 537 MHz), BH #LELTA1.