The Lectrosonics IFBR1B is a compact bodypack IFB receiver featuring a removable, rechargeable battery. The receiver is compatible with IFBT4 transmitters, as long as there is frequency band overlap between the components, creating a wireless IFB (interruptible fold back) system to facilitate talent cueing and crew communications in broadcast and motion picture production.

The receiver will run for up to eight hours on the included rechargable LB-50 lithium-ion battery and the unit's LED will change from green to red to warn you when power is low.

The lightweight IFBR1B offers a compact, rugged machined-aluminum chassis with rounded edges, making it comfortable to wear and easy to conceal. A simple power/volume knob and intuitve controls with an LCD screen keep operation simple. 10 presets are available, allowing you to store frequencies in memory, even when the battery is removed, for quick setup on set.

The standard 3.5mm output can drive a wide variety of earbuds, headphones, and induction loops—from 16  to 600 ohms—at substantial volumes. Mono earpieces are automatically accommodated with no loss of audio output or battery life. The included wire belt clip makes it easy to secure the receiver to clothing.

IFB Monitoring for Talent and Crew    Compatible with IFBT4 Transmitters    8 Hours on Rechargeable Battery

Related Questions and Answers

Q: 1. What are the dimensions of the receiver?

A: It's not tiny... I have one at home that I use with a DDJ WEGO2 and its around 7 x 4 x 1.5 inches.

Q: 2. With an adapter to a 3.5 mm jack, can I connect the audio output directly to my camcorder's mic input?

A: Technically you could but it is not recommended. The receiver sports a line level output whereas your camcorder sports a mic level input, which may cause clipping or other undesirable effects.

Q: 3. Can I buy additional receiver to pair up and have a total connections of 3 receivers to 1 transmitter?

A: Yes. multiple receivers may be used with a single transmitter. Frequency Presets There are 10 presets available for programming in the IFBR1B. The stored frequencies remain in memory during power OFF and even with the battery removed. Use the UP and DOWN arrows to scroll through the previously selected frequencies stored in the IFBR1B and quickly change frequencies for quick communication.

Q: 4. How many watts does the Shure ULXD4Q pull down?

A: As per Shure, 7.6 watts.

Q: 5. Is this ok to use for bag work? Would the proximity of this transmitter interfere with the receivers, I'm also carrying in my audio bag? Would the LMa model be a better solution?

A: I don't think you have anything to worry about. The systems you are using are about as good as it gets. They are all frequency agile and the system overcomes channel noise by digital encoding and decoding audio in the transmitter and receiver. That being said no wireless can be 100% fool proof. But what you are using is about as close as it gets. Even in the worst case scenario if you had an issue. You can always take a receiver out of your bag and put it in your back pocket. I think you should be fine and the LMa is unnecessary.

Q: 6. will this work in an Olympus ZX1?

A: Unfortunately, the Lectrosonics LB-50 Rechargeable Li-Ion Battery Pack for SSM Transmitter & IFBR1B Receiver is not compatible with the Olympus ZX1.

Q: 7. Is IFBT4 block 19 compatible with the A1 receiver, will the frequencies match up?

A: Yes, the Lectrosonics IFBR1B Bodypack IFB Receiver with Charger (A1: 470 to 537 MHz) is compatible for use with the Lectrosonics IFBT4 Frequency-Agile IFB Transmitter (Frequency Block 19), which covers 486.400 - 511.900 MHz (B&H # LEIFBT419). It can also be used with the Lectrosonics IFBT4 Frequency-Agile Compact IFB Transmitter (Block 470), which covers 470.100 - 495.600 MHz (B&H # LEIFBT4470), and the Lectrosonics IFBT4 Frequency-Agile IFB Transmitter (Frequency Block 20), which covers 512.000 - 537.500 MHz (B&H # LEIFBT420).

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. how many handheld mics can the 2CH version support?

A: Wireless receivers can accommodate one transmitter per channel; the two channel receiver can connect to two, and the four channel version can connect to four.

Q: 10. how many receivers can I use with one transmitter?

A: There is no limit to the amount of receivers usable with The Lectrosonics IFBT4 transmitter.