The Shure BLX4R Rackmount Wireless Receiver 512-542 MHzis a single-channel wireless receiver compatible with the BLX1 bodypack transmitter and BLX2 handheld transmitters. It features a rugged metal chassis and, using the included hardware, can be rackmounted with the two removable antennas positioned on the front of the rack—for optimal signal reception in A/V installations and sound-reinforcement applications.

The BLX4R offers one-touch QuickScan frequency selection to quickly search 123 available frequencies and locate a clean RF channel in case of interference. It also employs microprocessor-controlled diversity technology to reduce dropouts. BLX systems allow up to 12 mic channels to operate simultaneously in each frequency band, at a range up to 300'.

The LCD display shows group and channel settings, and allows you to meter audio level and signal strength. An LED indicator even lets you keep an eye on the transmitter's remaining battery life. The unit offers 1/4" and XLR connectors with adjustable output level for flexible connectivity to PA systems and mixing boards.

For Small Venues and Conference Rooms    Single-Channel, Rackmount Design    123 Auto-Scan Frequencies    Two Removable Antennas with Diversity    Adjustable Output Level    Rugged Metal Construction    Expandable to 12 Mic Channels/300' Range

Related Questions and Answers

Q: 1. Does this model have the digital switch that's on the bottom of the single version?

A: No. I think you are referring to the Analog/Digital switch on the optional SMAD-P5 Digital MI Shoe Adapter (B&H # SOSMADP5) that allows you to mount the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver on select Sony camcorders and cameras equipped with the MI shoe to enable cable-free connection for both audio and power.

Q: 2. Does this work for both channels in a Sony X400 camera?

A: Hi Tom, Yes. Thanks, Erin

Q: 3. Does this newer receiver work with the previous gen UTX-B03 transmitter? I need to add a 2nd receiver to my kit.

A: Yes, this URX-P40 receiver will work with the previous generation UTX-B03 transmitter as long as they both operate on the same frequency band.

Q: 4. Can this receiver be as a IFB to monitor audio?

A: Yes, the Sony URX-P40 Camera-Mount Wireless Receiver does have a 3.5mm headphone jack which can be used to monitor audio, so it could be used for an IFB application.

Q: 5. If URX-P40 receiver is backwards compatible for use with an older UTX-B2 Is it legal or not to use in USA the old Sony UTX-B2 Transmitter because it uses the frequencies 638.125-661.875 MHz ? I've heard that using microphones in this range is noy legal anymore. Can someone clarify this?

A: The FCC recently made changes to regulations for use of the 600 MHz band within the United States. Frequencies above 616 MHz are now designated for broadband use and can no longer be used for operating wireless microphones. More details are available here: https://www.fcc.gov/consumers/guides/operation-wireless-microphones

Q: 6. What adapter cables are include with the receiver?

A: The Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver comes with 2 x XLR to Locking 3.5mm Output Cables and one 3.5mm to Locking 3.5mm Cable.

Q: 7. Will the balanced output drive a device that requires line level input? I was thinking of connecting it directly to the line level input of the Radial EXO-POD.

A: The Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver is only capable of Mic level output signals and does not offer Line level output.

Q: 8. Battery Type-4 is not described in your manual or anywhere on the web. What type of battery is type4?

A: Page 34 in the manual for the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver (UC14: 470 to 542 MHz) describes Type 4 as a 2500mAH AA battery like BH #WAAAALAX8 for example. https://www.bhphotovideo.com/lit_files/833188.pdf

Q: 9. Can this unit be powered by the USB port?

A: Yes, the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver can run on USB power.

Q: 10. Can you connect two UTX-B40 to one URX-P40? A use case would be two people talking, each person with a UTX-B40 and a URX-P40 connected to a camera that is recording kind of like a discussion/interview between two people

A: No, the URX-P40 is a single-channel receiver that can be used with one transmitter only. For two people, you will want the Sony URX-P03D Dual-Channel Camera-Mount Wireless Receiver - UC14: 470 to 542 MHz (B&H # SOURXP03D14) which is a two-channel receiver that can be used with two transmitters at the same time. We do sell a kit that includes the URX-P03D receiver and two UTX-B40 transmitters with lavalier mics and a case, which is the Sony UWP-D 2-Person Camera-Mount Wireless Omni Lavalier Microphone System Kit - UC14: 470 to 542 MHz (B&H # SOURXP03D14Q). The URX-P03D can send one signal to the camera with the combined audio from both mics.