Sennheiser SI1015-4000-SINGLE
SI 1015-4000 Single IR System, 4,000s/ft

OUR PART #  SI1015-4000-SINGLE

The SI 1015-4000 Single is a single channel infrared system package that provides coverage of up to 4,000 sq. ft.

The SI 1015 modulator accepts line level input via an XLR connection and drives the SZI 1015 (medium area) and SZI 1029 (large area) emitter panels. By generating higher than usual sub-carrier frequencies, the SI 1015 avoids the interference generated by electronically-ballasted fluorescent lights. A selector switch can be set for single or dual-channel operation, and the SI 1015’s external power supply provides DC power for two SZI 1015 emitters or one SZI 1029-24.

Sennheiser infrared systems are ideal for wireless, interference-free secure assistive listening and language transmission for theaters, houses of worship, courtrooms, conferences and much more! With their unique amplitude and frequency modulation process, Sennheiser infrared systems offer high-quality, dependable audio with single, dual, stereo and multiple channel operation. Sennheiser IR systems can be modeled in EASE design software.


  • Single channel system with coverage up to 4,000 sq. ft.
  • Reliable 2.3 MHz and 2.8 MHz carrier frequency
  • Expandable system components
  • Infrared system technology provides secure communication
  • Ideal for assistive listening and visual description applications, multi-language transmission and more


  • SI 1015 two-channel modulator
  • NT 1015-120 power supply for modulators and/or emitters
  • GA 1031-CC rack adapter for SI1015 modulator
  • SZI 1015 emitter panel
  • WM-1 wall/ceiling mount
  • 5 x RI 150 single channel infrared receiver
  • L151-10/NT charging unit with power supply for ten RI 150 receivers
  • ADASignageKit - ADA sign and window sticker

SI 1015 Specifications:

  • XLR connector: 2 x XLR-3 symet.
  • Carrier frequency: 2.3 MHz / 2.8 MHz
  • Current consumption: <140 mA
  • Dimensions: 1/2 19-inch, 1 U (224x44x173 mm)
  • Impedance: 600 O
  • Input voltage range: 10 mV - 5 V (Line)
  • Modulation: FM
  • Nominal deviation: ± 40 kHz
  • Operating voltage (mains): 24-30 V DC
  • Peak deviation: ± 56 kHz
  • RF output: 2 x BNC
  • Weight: 1.8 lbs. (800 g)
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