Sennheiser SI 30 Dimensions

Features—Benets
• New, higher subcarrier frequencies to avoid interference with uorescent lighting
• Easy to install
• Master system can be used independently for up to 750 sq. ft. of coverage
• SZI 30 slave emitters offer increased coverage
• Connects to line level audio source via 1/8" or 1/4" plug unbalanced
• 1-year warranty
Technical Data
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AF input voltage for nominal deviation 45 mV–4 V (automatic modulation control)
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THD (1 kHz, nom. dev.) ≤1 %
AF signal-to-noise ratio ≥60 dB(A) rms
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11 sedoid RI
Max. coverage area approx. 80 m, single-chn.
Radiating power approx. 0.5 W
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Product Variants
SZI 30 Emitter
IR Wideband Modulator with Integral Radiator
NOTE: Power supply is not included. Please order as required.
Radiator cluster with four IZK 20 clamps and IZM 20
cluster mounting kit
Back view of SI 30
Front view of SI 30
SI 30
The SI 30 is a wideband modulator with an integral radiator. It can be switched between
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 dened zones,
e.g. in museums.
SI 30
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Required Components
Power supply for one SI30 or SZI30
021-1-02TNAm002,CDV42
Power supply for up to four SI30
and SZI30 24VDC, 500mA (requires KKY20-015) NT20-4-120
RF connection cable (2x 1/8” jack); 3.9” KR20-015
Mounting clamp (one required for
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Supplied Accessories
1 x AF connection cable, 1/8" stereo
jack plug to Texas connector, length 2 m S46562
1 x 1/8 to 1/4" stereo jack adapter
Coverage area of the SI 30 / SZI 30
Polar pattern of the SI 30/SZI 30
Four SZI 30, mounted at an angle of 60° to one anoth-
er. For comparison purposes, the coverage of a single
SZI 30 is shown at 30°.
Architect’s Specications
Optional Accessories
RF extension cable, 24.6’ KR 20-7
AF extension cable, 3.28’ KK 20-1
AF extension cable, 24.6’ KK 20-7
4-way “octopus” cable (Texas connectors) KKY20-015
Mounting hardware for clusters of 2 to 4
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Wall/ceiling mount, 5/8” thread WM1
Adapter, 5/8” to 3/8”, for mounting a
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Compatible Accessories
Single channel stethophone receiver RI250/RI250-J/RI250-S
Two channel stethophone receiver HDI302
Charger and power supply for 10 batteries L151-10 and NT92-120
Charger and power supply for 11-50 batteries L151-10 (one for every 10 batteries)
NT2013-120
Spare rechargeable batteries BA151 NiMH
Latex replacement ear cushions EP405L
SI 30
The unit shall be a wideband infrared modulator with a nominal deviation of ±50 kHz. The
Carrier frequencies must be 2.3 and 2.8 mHz. The unit must have a 3-pin Texas socket AF
input with a 45 mV–4 V input voltage for nominal deviation. The AF frequency response
must be 30–18,000 Hz, with THD equalling ≤ 1%. The AF signal-to-noise ratio shall be ≥60
bd(A) rms. The output impedance shall be approx. 50 Ω . There shall be 11 diodes. The
max. coverage area shall be approx. 80 m, with a radiating power of approx .5 W. The
operating voltage shall be 24–27 DC via 2-pin Texas socket. The current consumption shall
be approx. 180 mA. The dimensions shall be approx. 4.64 x .98 x 3.54 and weigh approx.
4.93 oz The unit shall be a Sennheiser SI 30.
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