Sennheiser SR 3056-U User manual

SR 3056-U
RF Wireless Systems | 3000 Series Wireless Monitoring System
General Features
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Wireless monitoring system for stage and broadcast use
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Stereo and mono transmission
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“HiDyn stage” noise reduction system
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Easy to use
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Suitable for multi-channel applications
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Can also be used as a tal bac system
SR 3056-U
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Twin stereo transmitter
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Stereo/mono selector switch
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16 switchable transmission frequencies per transmitter, PLL-controlled
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Switching bandwidth max. 24 MHz per transmitter
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LC display for frequency, RF output power and deviation (2 x)
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Delivery includes: 1 SR 3056-U twin transmitter,
2 antennas, 19” rac mount ears,
1 mains cable
General Description
The SR 3056-U consists of two complete stereo transmitters with 16 switchable UHF
transmission frequencies each. RF characteristics are the same as for a radiomicro-
phone, ma ing multi-channel frequency selection easy. Its ease of use and excellent
mechanical stability ma e the SR 3056-U an ideal choice for use in large shows and
for touring artists.
Technical Data
RF output power .........................................max. 100 mW*,
internally adjustable
Transmission frequencies ................................................16
Frequency range...........................................450–960 MHz
Switching bandwidth.............................................. 24 MHz
Modulation.........................................wideband FM, stereo
Nominal/pea deviation ............... ± 40 Hz / ± 56 Hz,
pilot tone dev. ± 7.5 Hz
Noise reduction system .............................“HiDyn stage”
AF frequency response............................... 40–15,000 Hz
Signal to-noise ratio .....................................typ. 87 dB(A)
THD (1 Hz) ................................................................≤ 0.3 %
RF output...................................................BNC soc et, 50 Ω
AF inputs ........................................... 2 x 3-pin XLR soc et,
+4 dBU (1 Hz), adjustable
Monitoring output................................. 0–3 V, adjustable
Source impedance ......................................................≤ 10 Ω
Power supply ...................... 115/230 V AC +10 %/–15 %
Housing ................................................................... 19”, 1 HE
Dimensions ........................................... 436 x 215 x 43 mm
Weight................................................................ approx. 4 g
* Special high power versions are available to special order
Cat. No. 004525

Accessories for the SR 3054-U and SR 3056-U transmitters
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GA 3030 AM antenna mount Cat. No. 004368
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A 2003-UHF passive directional antenna Cat. No. 003658
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A 1031-U passive omni-directional antenna Cat. No. 004645
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GZA 1036-9 ground plane antenna Cat. No. 002336
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N/BNC adaptor Cat. No. 033839
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RG 58 co-axial antenna cable
GZL 1019 A1 (1 m) Cat. No. 002324
GZL 1019 A5 (5 m) Cat. No. 002325
GZL 1019 A10 (10 m) Cat. No. 002326
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GZV 1019A BNC coupler Cat. No. 002368
436 mm
43 mm
215 mm
SR 3054-U/SR 3056-U dimensions
SR 3054-U/SR 3056-U
RF Wireless Systems | 3000 Series Wireless Monitoring System

SR 3054-U/SR 3056-U
RF Wireless Systems | 3000 Series Wireless Monitoring System
3000 Series Monitoring System
The wireless monitoring system, consisting of a UHF stereo rac mountable trans-
mitter and a UHF stereo miniature receiver, has been speciall y designed for touring,
stage and broadcast use. In addition, the system is also suitable for any application
where tal bac signals are to be transmitted. With earphones connected to the
receiver, the musician and/or sound engineer can listen to the stereo audio signal
received – without troublesome cables and monitor spea ers being required.
The ris of feedbac is reduced to an absolute minimum as the on-stage micro-
phones can no longer pic up the sound from the now non-existent wedge monitors.
Further advantages are that the foldbac mix is now quic er and easier to do
and does not have to be changed when the show changes venue. The system has
superb audio quality with an increased signal-to-noise ratio due to the inclusion
of “HiDyn stage”, the Sennheiser noise reduction system that has been specially
developed for stage use.
SR 3054-U and SR 3056-U transmitters
The transmitter of the 3050 wireless monitoring system is available in two versions:
The SR 3054-U is a single stereo transmitter in a 1 U 19” rac housing, the SR 3056-U
consists of two complete stereo transmitters in the same size housing. Each trans-
mitter has 16 switchable PLL-controlled frequencies and is fully suitable for multi-
channel applications.
Each transmitter has a stereo/mono selector switch. The multi-function LC display
in dic ates t he se lec ted tr ansmission fre quency, t he A F l eve l (two separ ate b argr ap h s
for the left and right channel) and the RF output power (in %). The RF output
power and the AF input level can be adjusted internally. The transmitters should
always be used with remote antennas such as the A 2003-UHF passive directional
antenna, the A 1031-U passive omni-directional antenna or the GZA 1036-9
ground plane antenna.
The supplied telescopic antennas should only be used for applications where
– good transmission conditions provided – a transmission system is to be used
without a large amount of installation wor . When the transmitters are mounted
into a rac , the telescopic antennas can be installed at the front of the rac by
using the GA 3030 AM antenna mount.
SR 3054 / SR 3056 front panel operating controls
SR 3054
1 Headphone soc et 1/4” (6.3 mm) Ø
2 Headphone volume control
3 Deviation bargraph for the left channel
(with overmodulation display)
4 Deviation bargraph for the right channel
(with overmodulation display)
5 RF level bargraph
6 Multi-function LC display for
transmission frequency, muting,
mono/stereo, frequency groups 1–4
7 Operating and programming buttons
8 On/off switch
123 5467 8
SR 3056
123 5467 8 12 3 5467 8
SR 3054 / SR 3056 bac panel features
SR 3054
9 Fuse holder and mains voltage selector
10 Mains connector
11 Cable crip for mains cable
12 Programming interface (15-pin sub-D soc et)
13 AF input (left)
14 AF input (right)
15 Antenna output
91011 1312 1415
SR 3056
91011 1312 14 15 15 13 14