Sennheiser SR 3256 A Dual-Stereo IEM Transmitter

The SR 3256 twin stereo transmitter is designed for professional wireless monitoring applications. 32 transmission frequencies, 16 of which are tunable in steps of 5 kHz, give the highest flexibility. A switching bandwidth of 36 MHz per transmitter and the efficient Sennheiser HDX noise reduction system ensure reliable, high-quality signal transmission. Its rugged housing with clear, user-friendly menu control make this transmitter the ideal partner for major stage shows and tours.

Specifications:

• RF characteristics
• 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
• AF characteristics
  • 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 %
• Overall unit
  • Power supply: 115/230 V AC +10% / –15%
  • Power consumption SR 3254: max. 13 W
  • Power consumption SR 3256: max. 23 W
  • Dimensions(without rack mount “ear: 436 x 228 x 43 mm (19", 1 U)
  • Weight SR 3254: approx. 3,300 g
  • Weight SR 3256: approx. 4,000 g
  • Type approval:
    • USA: FCC-Part 74.861, FCC ID: DMOSREK3K
    • Canada: RSS-123, IC: 2099A-SREK3K
    • EU: ETSI EN 300 454-1/-2, CE 0682!