IR-911 Three-Channel Infrared Receiver
A three-channel infrared receiver designed for large rooms, with two RJ45 ports for up to four sensors and coverage up to 400 m². Balanced and unbalanced outputs connect it to an existing amplifier or DSP.
- Three infrared channels support two microphones and one wireless presenter.
- Covers large classrooms up to 400 m² with up to four connected sensors.
- Built-in feedback suppressor prevents howling.
Overview
Key features
- Three infrared channels support two microphones and one wireless presenter.
- Covers large classrooms up to 400 m² with up to four connected sensors.
- Built-in feedback suppressor prevents howling.
- Two RCA line outputs, one 1/4-inch TS output and a 48 V wired microphone input.
- Built-in digital sound card for recording and hybrid-teaching streams.
- RS-232 remote control for campus AV platforms; 1U 42 mm chassis.
The receiver is designed to slot into an existing classroom audio chain, whether that means a legacy amplifier, a new DSP or a campus-wide control system.
The receiver integrates with existing classroom amplifiers and speakers, and can be combined with Seekika infrared sensors for larger rooms. Contact Seekika Audio for a system diagram.
What’s in the box
- IR-911 receiver
- Power adapter
- Rack-mount hardware
- User guide
Specifications
Audio & wireless
| IR Wireless Channels | 3 channels |
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| Selectable channels | 6 |
| Frequency response | 50 Hz-20 kHz±3 dB |
| THD | <0.05% |
| Signal-to-noise ratio | 100 dB |
Connectivity & control
| Interface | × 2RJ45(connect 4 infrared sensors); 2 × Line in; 2 × Micin(1of which is with 48Vphantom power); 1 × USB(digital sound card); 2 × Mixing outputs; 1 × Mic out; 1 × RS-232 terminal(3 pins) |
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Physical
| Dimensions | 420(L) × 234(W) × 42(H) |
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Applications
Planning a classroom or campus project?
Share your floor plan and room schedule — we will recommend microphone coverage, speaker placement and kit configuration.
Frequently Asked Questions
Which rooms is the IR-911 designed for?
The IR-911 is typically installed in large classroom, auditorium, lecture hall, campus. Room size, ceiling height and speaker layout determine the final configuration — send us a floor plan and our team will recommend a layout.
How many infrared channels does the IR-911 support?
The IR-911 offers 6 selectable infrared channels. Several microphones can operate in the same room on separate channels; match each microphone and receiver to the same channel to avoid cross-talk.
What certifications and warranty are available for the IR-911?
Seekika Audio supplies CE, RoHS and FCC compliance documentation for its classroom audio products. Classroom audio products carry a standard 2-year warranty against manufacturing defects, with extended coverage available on project orders.
- OEM / ODM customization
- CE, RoHS & FCC documentation
- System layout and commissioning support
- Reply within one business day
