Sennheiser SZI 30, SI 30 User Manual
SI 30/SZI 30
Features
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Compact radiator and modulator/radiator for the carrier
frequencies 2.3 MHz and 2.8 MHz
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Easy installation and precise alignment
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Delivery includes:
SI 30: 1 x SI 30 modulator/radiator, 1 x AF connection cable, 3.5 mm stereo jack
plug to Texas connector, length 2 m, 1 x 3.5 mm/1/4“ stereo jack adaptor
SZI 30: 1 x SZI 30 radiator
The NT 20-1 plug-in mains unit is not included in the delivery. Please order
it separately in the version you require (European, UK or USA versions available).
General Description
The SI 30 is a wideband modulator with an integral radiator. It can be switched
be tween operation on channel 1 (2.3 MHz), channel 2 (2.8 MHz) and stereo operation.
Due to its compact size and relatively low radiating power, the SI 30 modulator/
radiator and the SZI 30 radiator are an ideal choice for smaller or medium-sized
rooms, for covering recesses or for applications which require transmission of audio
information to well defined zones, e.g. in museums.
Tec hnica l Data SI 30
Modulation .......................................................wideband FM
Nominal deviation .................................................. ± 50 kHz
Carrier frequencies ..................................2.3 MHz, 2.8 MHz
AF input ................................................... 3-pin Texas socket
AF input voltage for
nominal deviation..............................................45 mV – 4 V
(automatic modulation control)
AF frequency response ...............................30 – 18,000 Hz
THD (1 kHz, nom. dev.) .................................................≤ 1 %
AF signal-to-noise ratio.................................. ≥ 60 dB(A)
rms
RF output..................................................3.5 mm mono jack
Output impedance............................................approx. 50 Ω
IR diodes................................................................................11
Max. coverage area .................. approx. 80 m
2
, single-chn.
Radiating power ............................................. approx. 0.5 W
Operating voltage............................ 24 – 27 V DC via 2-pin
Texas socket
Current consumption ................................. approx. 180 mA
Dimensions ................................approx. 118 x 25 x 90 mm
Weight .............................................................. approx. 140 g
Tec hnica l Data SZI 30
Nominal deviation .................................................. ± 50 kHz
Carrier frequencies ............................................max. 6 MHz
AF frequency response ................ depends on modulator
THD (1 kHz, nom. dev.) .................................................≤ 1 %
AF signal-to-noise ratio ................................ ≥ 60 dB(A)
rms
RF input ....................................................3.5 mm mono jack
RF output......................................3.5 mm mono jack with a
50-Ω term. impedance
Output impedance.........................approx. 20 kΩ or 50 Ω*
IR diodes................................................................................11
Max. coverage area .................. approx. 80 m
2
, single-chn.
Radiating power ............................................. approx. 0.5 W
Operating voltage............................ 24 – 27 V DC via 2-pin
Texas socket
Current consumption ................................. approx. 150 mA
Dimensions ................................approx. 118 x 25 x 90 mm
Weight .............................................................. approx. 135 g
*see description on the following pages
IR Audio Transmission Technology | Modulators/Radiators
SI 30/SZI 30
Dimensions of the SI 30 / SZI 30
25 mm
118 mm
90 mm
0
10
20
30
40
50
60
70
80
121110987654321
Channels
m
2
Coverage area of the SI 30 / SZI 30
Recommended Accessories
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Plug-in mains unit
NT 20-1 European version Cat. No. 003600
NT 20-1-120 USA versio n Cat. No. 003601
NT 20-1-UK UK version Cat. No. 003602
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Mains unit for up to four SI 30 / SZI 30
NT 20-4 European version Cat. No. 003603
NT 20-4-120 USA version Cat. No. 003604
NT 20-4-UK UK version Cat. No. 003605
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RF connection cable (2 x 3.5 mm jack)
KR 20-7 (7.5 m) Cat. No. 003535
KR 20-015 (0.1 m) Cat. No. 003536
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AF extension cable (2 x Texas)
KK 20-1 (1 m) Cat. No. 003557
KK 20-7 (7.5 m) Cat. No. 003558
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KK 20-015 4-way “octopus” cable (Texas) Cat. No. 003599
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IZK 20 mounting clamp Cat. No. 003560
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IZM 20 cluster mounting kit Cat. No. 003561
IR Audio Transmission Technology | Modulators/Radiators
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