Williams Sound IR SY12 IR Plus Secure

The Williams Sound IR SY12 IR Plus Secure combines configurable infrared transmission, DSP-based audio processing, CAT5e emitter connections, and front-panel monitoring in a single-rack-unit format. Its published specifications emphasize flexible audio input handling, selectable carrier pairs, diagnostic tools, and embedded-web configuration.

Ideal Use Cases

This model is suited to installations requiring single-channel infrared coverage of up to 18,000 square feet. Selectable 2.3/2.8 MHz or 3.3/3.8 MHz carrier pairs accommodate different operating requirements, while receiver specifications list compatibility with 2.3 MHz, 2.8 MHz, or stereo operation. The system is also appropriate when technicians need to connect line-level sources or microphones and monitor two audio channels directly from the equipment rack.

Why Choose This Model

Two combination 3-pin XLR and 1/4-inch TRS inputs accept balanced or unbalanced line-level audio as well as balanced or unbalanced microphones. Selectable phantom power supports compatible microphone configurations. DSP-based processing provides 1:1, 1.5:1, or 2:1 compression, plus adjustable high-pass and low-pass filter frequencies. Configuration is available through an embedded website, including adjustment of the timer that shuts off the carrier when no audio is present. Optional Dante support is also listed.

Front-panel 1/4-inch headphone outputs provide separate monitoring for Channel A and Channel B. A selectable internal 400 Hz test tone and dual infrared test LEDs support setup, receiver testing, audio monitoring, and diagnostics.

Installation and Integration

The modulator occupies one rack unit and measures 19 inches wide by 1.75 inches high by 8.2 inches deep. Its listed weight is 5.2 pounds. The black metal-and-plastic enclosure includes an LED-equipped rocker power switch.

Four RJ-45 emitter output ports carry +48 VDC power, RS-485 communication, and baseband infrared transmission signals over CAT5e cable. Published connectivity data states that these functions can be supplied through one CAT5e cable connected from the IR M1. The international desktop supply accepts 110-240 VAC at 50-60 Hz, with a listed 36 W input and +48 VDC, 0.75 A center-positive output. Operating requirements specify an ambient temperature of 0-50°C in a non-condensing, non-corrosive atmosphere.

Performance Highlights

The electrical frequency response is specified at 40 Hz to 16,000 Hz, +1 dB/-3 dB. Typical signal-to-noise ratio is 67 dB, and total harmonic distortion is less than 2 percent for the electrical response. FM wideband modulation uses ±50 kHz deviation with 50 µs pre-emphasis.

Single-channel coverage is listed at up to 18,000 square feet. A separate range specification lists up to 15,000 square feet when used with an IR T2 transmitter. Associated receiver data specifies an eight-hour LiPo battery life, a 3.5 mm stereo headphone jack, a volume thumbwheel, frequency-selection control, and a maximum acoustic output of 120 dB SSPL90 with a 2 cc coupler.

What Makes It Different

The combination of embedded-web configuration, automatic carrier shutoff, internal test-tone generation, dual infrared test LEDs, and independent channel-monitoring outputs gives installers multiple ways to configure and verify operation. The four CAT5e emitter ports consolidate power, RS-485 communication, and baseband signals into the same cable connection. A listed five-unit charging capacity, individual red charging indicators, and CHG 520 charger compatibility address receiver charging requirements.

The published approval list includes CE, FCC, RoHS, RCM, WEEE, CB Scheme, ISED, and VCCI. The specified warranty is two years for the modulator and 90 days for accessories.

Final Assessment

The IR SY12 offers a documented combination of rack-mounted control, selectable infrared carrier operation, DSP audio adjustment, browser-based configuration, and CAT5e emitter connectivity. Its monitoring and diagnostic provisions are particularly relevant to installations where technicians need direct access to channel audio, test signals, and receiver-verification tools. Exact package contents are not specified in the supplied product data.