Sennheiser SR 3256 User Manual

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The above data also apply to the second transmitter in the SR 3256.

Frequency ranges

518–554, 626–662, 740–776, 786–822, 
830–866 MHz 

Transmission frequencies

1 channel bank with up to 16 factory-preset 
channels

1 channel bank with up to 16 freely selectable 
channels (frequencies tunable in steps of 
5 kHz)

Switching bandwidth

36 MHz

Frequency stability

±10 ppm (-10°C to +55°C)

Antenna output

BNC socket, 50 Ω

RF output power

max. 100 mW

Modulation

FM stereo working on the pilot tone principle

Noise reduction system

Sennheiser 

HDX

Nominal/peak deviation

 

±24 kHz / ±48 kHz

MPX pilot tone 
(frequency/deviation)

19 kHz / ±5 kHz

AF frequency response

40–15,000 Hz

Headphone output

¼“ (6.35 mm) stereo jack socket, 

≥ 200 mW/32 Ω

Load impedance of 
headphone output

≥ 16 Ω

AF input

2 x XLR-3, electronically balanced

AF input voltage (at nom. deviation)  +4 dBu at 1 kHz, internally adjustable

Signal-to-noise ratio

> 90 dB(A)

rms

 

(refers to overall link with EK 3253)

THD 
(at 1 kHz and nominal deviation) 

< 0.9 %